1 session 級別設置event SQL> ALTER SESSION SET EVENTS='10053 trace name context forever, level 1';Session altered. 2 執行語句 SQL> select /*+10053 test*/*?2 ?from dao_objects1 t1 ,dao_objects2 t2,emp t33 ?where t1.object_id=t2.object_id4 ?and t2.object_id=t3.empno ?;3 關閉事件 SQL> ALTER SESSION SET EVENTS '10053 trace name context off';Session altered. 查看trace SQL> ![oracle@server ~]$ cd /u01/oracle/admin/orcl/udump/[oracle@server udump]$ ll -t total 156 -rw-r----- 1 oracle oinstall 77084 Dec ?6 20:04 orcl_ora_9177.trc -rw-r----- 1 oracle oinstall ?2279 Dec ?6 17:48 orcl_ora_5067.trc -rw-r----- 1 oracle oinstall ? 687 Dec ?6 17:47 orcl_ora_5019.trc -rw-r----- 1 oracle oinstall ?2221 Sep 11 19:46 orcl_ora_4856.trc -rw-r----- 1 oracle oinstall ? 659 Sep 11 19:46 orcl_ora_4810.trc -rw-r----- 1 oracle oinstall ? 691 Jun 10 09:08 orcl_ora_6014.trc -rw-r----- 1 oracle oinstall ? 903 Jun 10 09:00 orcl_ora_5529.trc -rw-r----- 1 oracle oinstall ? 994 Jun 10 09:00 orcl_ora_5478.trc -rw-r----- 1 oracle oinstall ? 659 Jun 10 09:00 orcl_ora_5498.trc -rw-r----- 1 oracle oinstall ? 903 Jun 10 08:59 orcl_ora_5422.trc -rw-r----- 1 oracle oinstall ? 659 Jun 10 08:59 orcl_ora_5394.trc -rw-r----- 1 oracle oinstall ? 994 Jun 10 08:59 orcl_ora_5390.trc -rw-r----- 1 oracle oinstall ?1281 Jun 10 08:59 orcl_ora_5388.trc -rw-r----- 1 oracle oinstall ? 762 Jun 10 08:59 orcl_ora_5364.trc -rw-r----- 1 oracle oinstall ? 722 Jun 10 08:59 orcl_ora_5346.trc -rw-r----- 1 oracle oinstall ? 953 Jun 10 08:59 orcl_ora_5334.trc -rw-r----- 1 oracle oinstall ?2923 Jun 10 08:58 orcl_ora_5286.trc -rw-r----- 1 oracle oinstall ? 659 Jun 10 08:58 orcl_ora_5260.trc -rw-r----- 1 oracle oinstall ?1066 Jun 10 08:58 orcl_ora_5258.trc -rw-r----- 1 oracle oinstall ? 659 Jun 10 08:58 orcl_ora_5205.trc [oracle@server udump]$ cat orcl_ora_9177.trc? --一些環境信息 /u01/oracle/admin/orcl/udump/orcl_ora_9177.trc Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options ORACLE_HOME = /u01/oracle/product/OraHome System name: ? ?Linux Node name: ? ? ?server Release: ? ? ? ?2.6.18-274.el5 Version: ? ? ? ?#1 SMP Fri Jul 8 17:36:59 EDT 2011 Machine: ? ? ? ?x86_64 Instance name: orcl Redo thread mounted by this instance: 1 Oracle process number: 15 Unix process pid: 9177, image: oracle@server (TNS V1-V3)*** 2015-12-06 20:04:48.796 *** ACTION NAME:() 2015-12-06 20:04:48.796 *** MODULE NAME:(SQL*Plus) 2015-12-06 20:04:48.796 *** SERVICE NAME:(SYS$USERS) 2015-12-06 20:04:48.796 *** SESSION ID:(159.5) 2015-12-06 20:04:48.796 Registered qb: SEL$1 0x77a8eae0 (PARSER)signature (): qb_name=SEL$1 nbfros=3 flg=0fro(0): flg=4 objn=52978 hint_alias="T1"@"SEL$1"fro(1): flg=4 objn=52983 hint_alias="T2"@"SEL$1"fro(2): flg=4 objn=52984 hint_alias="T3"@"SEL$1" ************************** ?--開始各種嘗試改寫 Predicate Move-Around (PM) ************************** PM: Considering predicate move-around in SEL$1 (#0). PM: ? Checking validity of predicate move-around in SEL$1 (#0). CBQT: Validity checks failed for 5p2ahbv0mbgm8. Query block (0x2ac377a8eae0) before join elimination: SQL:******* UNPARSED QUERY IS ******* SELECT "T1"."OWNER" "OWNER","T1"."OBJECT_NAME" "OBJECT_NAME","T1"."SUBOBJECT_NAME" "SUBOBJECT_NAME","T1"."OBJECT_ID" "OBJECT_ID","T1"."DATA_OBJECT_ID" "DATA_OBJECT_ID","T1"."OBJECT_TYPE" "OBJECT_TYPE","T1"."CREATED" "CREATED","T1"."LAST_DDL_TIME" "LAST_DDL_TIME","T1"."TIMESTAMP" "TIMESTAMP","T1"."STATUS" "STATUS","T1"."TEMPORARY" "TEMPORARY","T1"."GENERATED" "GENERATED","T1"."SECONDARY" "SECONDARY","T2"."OWNER" "OWNER","T2"."OBJECT_NAME" "OBJECT_NAME","T2"."SUBOBJECT_NAME" "SUBOBJECT_NAME","T2"."OBJECT_ID" "OBJECT_ID","T2"."DATA_OBJECT_ID" "DATA_OBJECT_ID","T2"."OBJECT_TYPE" "OBJECT_TYPE","T2"."CREATED" "CREATED","T2"."LAST_DDL_TIME" "LAST_DDL_TIME","T2"."TIMESTAMP" "TIMESTAMP","T2"."STATUS" "STATUS","T2"."TEMPORARY" "TEMPORARY","T2"."GENERATED" "GENERATED","T2"."SECONDARY" "SECONDARY","T3"."EMPNO" "EMPNO","T3"."ENAME" "ENAME","T3"."JOB" "JOB","T3"."MGR" "MGR","T3"."HIREDATE" "HIREDATE","T3"."SAL" "SAL","T3"."COMM" "COMM","T3"."DEPTNO" "DEPTNO" FROM "DAO"."DAO_OBJECTS1" "T1","DAO"."DAO_OBJECTS2" "T2","DAO"."EMP" "T3" WHERE "T1"."OBJECT_ID"="T2"."OBJECT_ID" AND "T2"."OBJECT_ID"="T3"."EMPNO" Query block (0x2ac377a8eae0) unchanged CVM: Considering view merge in query block SEL$1 (#0) Query block (0x2ac377a8eae0) before join elimination: SQL:******* UNPARSED QUERY IS ******* SELECT "T1"."OWNER" "OWNER","T1"."OBJECT_NAME" "OBJECT_NAME","T1"."SUBOBJECT_NAME" "SUBOBJECT_NAME","T1"."OBJECT_ID" "OBJECT_ID","T1"."DATA_OBJECT_ID" "DATA_OBJECT_ID","T1"."OBJECT_TYPE" "OBJECT_TYPE","T1"."CREATED" "CREATED","T1"."LAST_DDL_TIME" "LAST_DDL_TIME","T1"."TIMESTAMP" "TIMESTAMP","T1"."STATUS" "STATUS","T1"."TEMPORARY" "TEMPORARY","T1"."GENERATED" "GENERATED","T1"."SECONDARY" "SECONDARY","T2"."OWNER" "OWNER","T2"."OBJECT_NAME" "OBJECT_NAME","T2"."SUBOBJECT_NAME" "SUBOBJECT_NAME","T2"."OBJECT_ID" "OBJECT_ID","T2"."DATA_OBJECT_ID" "DATA_OBJECT_ID","T2"."OBJECT_TYPE" "OBJECT_TYPE","T2"."CREATED" "CREATED","T2"."LAST_DDL_TIME" "LAST_DDL_TIME","T2"."TIMESTAMP" "TIMESTAMP","T2"."STATUS" "STATUS","T2"."TEMPORARY" "TEMPORARY","T2"."GENERATED" "GENERATED","T2"."SECONDARY" "SECONDARY","T3"."EMPNO" "EMPNO","T3"."ENAME" "ENAME","T3"."JOB" "JOB","T3"."MGR" "MGR","T3"."HIREDATE" "HIREDATE","T3"."SAL" "SAL","T3"."COMM" "COMM","T3"."DEPTNO" "DEPTNO" FROM "DAO"."DAO_OBJECTS1" "T1","DAO"."DAO_OBJECTS2" "T2","DAO"."EMP" "T3" WHERE "T1"."OBJECT_ID"="T2"."OBJECT_ID" AND "T2"."OBJECT_ID"="T3"."EMPNO" Query block (0x2ac377a8eae0) unchanged CBQT: Validity checks failed for 5p2ahbv0mbgm8. *************** Subquery Unnest *************** SU: Considering subquery unnesting in query block SEL$1 (#0) ************************* Set-Join Conversion (SJC) ************************* SJC: Considering set-join conversion in SEL$1 (#0). ************************** Predicate Move-Around (PM) ************************** PM: Considering predicate move-around in SEL$1 (#0). PM: ? Checking validity of predicate move-around in SEL$1 (#0). PM: ? ? PM bypassed: Outer query contains no views. FPD: Considering simple filter push in SEL$1 (#0) FPD: ? Current where clause predicates in SEL$1 (#0) :"T1"."OBJECT_ID"="T2"."OBJECT_ID" AND "T2"."OBJECT_ID"="T3"."EMPNO" kkogcp: try to generate transitive predicate from check constraints for SEL$1 (#0) predicates with check contraints: "T1"."OBJECT_ID"="T2"."OBJECT_ID" AND "T2"."OBJECT_ID"="T3"."EMPNO" after transitive predicate generation: "T1"."OBJECT_ID"="T2"."OBJECT_ID" AND "T2"."OBJECT_ID"="T3"."EMPNO" finally: "T1"."OBJECT_ID"="T2"."OBJECT_ID" AND "T2"."OBJECT_ID"="T3"."EMPNO" apadrv-start: call(in-use=6160, alloc=16344), compile(in-use=56144, alloc=58808) kkoqbc-start: call(in-use=6168, alloc=16344), compile(in-use=57640, alloc=58808) kkoqbc-subheap (create addr=0x2ac377a8c2c0) ******************************************? Current SQL statement for this session: ? ?--當前SQL select /*+10053 test*/* from dao_objects1 t1 ,dao_objects2 t2,emp t3 where t1.object_id=t2.object_id and t2.object_id=t3.empno ? *******************************************--關于改寫的各種名詞簡稱 Legend The following abbreviations are used by optimizer trace. CBQT - cost-based query transformation JPPD - join predicate push-down FPD - filter push-down PM - predicate move-around CVM - complex view merging SPJ - select-project-join SJC - set join conversion SU - subquery unnesting OBYE - order by elimination ST - star transformation qb - query block LB - leaf blocks DK - distinct keys LB/K - average number of leaf blocks per key DB/K - average number of data blocks per key CLUF - clustering factor NDV - number of distinct values Resp - response cost Card - cardinality Resc - resource cost NL - nested loops (join) SM - sort merge (join) HA - hash (join) CPUCSPEED - CPU Speed? IOTFRSPEED - I/O transfer speed IOSEEKTIM - I/O seek time SREADTIM - average single block read time MREADTIM - average multiblock read time MBRC - average multiblock read count MAXTHR - maximum I/O system throughput SLAVETHR - average slave I/O throughput dmeth - distribution method1: no partitioning required2: value partitioned4: right is random (round-robin)512: left is random (round-robin)8: broadcast right and partition left16: broadcast left and partition right32: partition left using partitioning of right64: partition right using partitioning of left128: use hash partitioning dimension256: use range partitioning dimension2048: use list partitioning dimension1024: run the join in serial0: invalid distribution method sel - selectivity ptn - partition ******************************************* Peeked values of the binds in SQL statement ******************************************* *************************************** PARAMETERS USED BY THE OPTIMIZER *********************************************************************PARAMETERS WITH ALTERED VALUES***************************************************************Bug Fix Control Environment ?--各種以修復未修復的bug***************************fix ?4611850 = enabledfix ?4663804 = enabledfix ?4663698 = enabledfix ?4545833 = enabledfix ?3499674 = disabledfix ?4584065 = enabledfix ?4602374 = enabledfix ?4569940 = enabledfix ?4631959 = enabledfix ?4519340 = enabledfix ?4550003 = enabledfix ?4488689 = enabledfix ?3118776 = enabledfix ?4519016 = enabledfix ?4487253 = enabledfix ?4556762 = 15 ? ? ?fix ?4728348 = enabledfix ?4723244 = enabledfix ?4554846 = enabledfix ?4175830 = enabledfix ?4722900 = enabledfix ?5094217 = enabledfix ?4904890 = enabledfix ?4483286 = disabledfix ?4969880 = disabledfix ?4711525 = enabledfix ?4717546 = enabledfix ?4904838 = enabledfix ?5005866 = enabledfix ?4600710 = enabledfix ?5129233 = enabledfix ?5195882 = enabledfix ?5084239 = enabledfix ?4595987 = enabledfix ?4134994 = enabledfix ?5104624 = enabledfix ?4908162 = enabledfix ?5015557 = enabledfix ?5263572 = enabledfix ?4483240 = enabledfix ?5099909 = enabledfix ?5650477 = enabledfix ?4273361 = enabledfix ?5694984 = enabledfix ?5449488 = enabledfix ?5236908 = enabledfix ?5618040 = enabledfix ?5634346 = enabledfix ?5220356 = enabledfix ?5611962 = enabledfix ?5741121 = enabledfix ?5547058 = enabledfix ?5762598 = enabledfix ?5509293 = enabledfix ?5396162 = enabledfix ?5891471 = enabledfix ?4872602 = disabledfix ?5882954 = enabledfix ?5884780 = enabledfix ?5680702 = enabledfix ?5240607 = enabledfix ?4924149 = enabledfix ?4752814 = enabledfix ?4583239 = enabledfix ?5949981 = enabledfix ?5096560 = enabledfix ?5838613 = enabledfix ?5482831 = enabledfix ?5624216 = enabledfix ?5976822 = enabledfix ?5741044 = enabledfix ?5385629 = enabledfix ?5705630 = disabledfix ?5483301 = enabledfix ?6122894 = enabledfix ?5842686 = disabledfix ?6006300 = disabledfix ?6070954 = enabledfix ?2492766 = enabledfix ?6042205 = enabledfix ?5302124 = enabledfix ?6051211 = enabledfix ?5620485 = enabledfix ?4545802 = enabledfix ?4716096 = enabledfix ?5259048 = enabledfix ?6163564 = enabledfix ?6082745 = enabledfix ?5944076 = enabledfix ?4878299 = enabledfix ?5288623 = enabledfix ?5570494 = enabledfix ?5387148 = enabledfix ?4605810 = enabledfix ?4704779 = enabledfix ?5547895 = enabledfix ?6188881 = enabledfix ?5872956 = enabledfix ?4708389 = enabledfix ?3151991 = enabledfix ?3426050 = enabledfix ? 599680 = enabledfix ?5505157 = enabledfix ?5996801 = enabledfix ?5765456 = 0 ? ? ??fix ?6494943 = enabledfix ?6251917 = enabledfix ?6087237 = enabledfix ?6239971 = enabledfix ?6062266 = enabledfix ?5520732 = 0 ? ? ??fix ?6151963 = enabledfix ?4567767 = enabledfix ?6007259 = enabledfix ?6694548 = enabledfix ?6923730 = 0 ? ? ??fix ?6468287 = enabledfix ?6714199 = enabledfix ?3801750 = enabledfix ?5902962 = enabledfix ?3056297 = enabledfix ?6440977 = disabledfix ?6904146 = enabledfix ?6221403 = enabledfix ?5466973 = enabledfix ?6138746 = enabledfix ?6399597 = disabledfix ?6029469 = enabledfix ?6073325 = enabledfix ?5648287 = 3 ? ? ??fix ?6670551 = disabledfix ?5416118 = 1 ? ? ??fix ?5714944 = enabledfix ?6617866 = enabledfix ?6329318 = enabledfix ?6972291 = disabledfix ?6434668 = enabledfix ?5893768 = enabledfix ?7345484 = enabledfix ?6688831 = disabledfix ?5284200 = enabledfix ?6146906 = enabledfix ?5868560 = disabledfix ?6610822 = enabledfix ?6514189 = enabledfix ?5406763 = enabledfix ?6778642 = enabledfix ?7208131 = enabledfix ?7430474 = enabledfix ?6282093 = enabledfix ?6845871 = enabledfix ?7249095 = enabledfix ?6430500 = disabledfix ?4663702 = enabledfix ?6282944 = enabledfix ?7170213 = enabledfix ?5844495 = enabledfix ?6429113 = enabledfix ?6530596 = enabledfix ?6120483 = enabledfix ?7325597 = enabledfix ?7298570 = enabledfix ?7236148 = enabledfix ?6528872 = enabledfix ?6119382 = enabledfix ?7237571 = enabledfix ?6626018 = disabledfix ?5199213 = enabledfix ?7138405 = enabledfix ?6365442 = enabledfix ?7555510 = enabledfix ?6487603 = enabledfix ?6469667 = enabledfix ?7576476 = enabledfix ?7295298 = enabledfix ?6326934 = enabledfix ?6771838 = enabledfix ?7521266 = enabledfix ?6669103 = enabledfix ?7259468 = enabledfix ?7597059 = enabledfix ?6773613 = enabledfix ?6782437 = enabledfix ?6897034 = enabledfix ?6994194 = enabledfix ?5936366 = enabledfix ?3320140 = enabledfix ?5578791 = enabledfix ?6990305 = enabledfix ?4619997 = enabledfix ?7263214 = enabledfix ?7576516 = enabledfix ?5922070 = enabledfix ?7165898 = enabledfix ?7519687 = enabledfix ?6987082 = disabledfix ?7132036 = enabledfix ?6418771 = enabledfix ?6267621 = enabledfix ?6520717 = disabledfix ?6838105 = enabledfix ?7679490 = disabledfix ?7272039 = enabledfix ?7676897 = disabledfix ?3628118 = enabledfix ?7281191 = enabledfix ?7692248 = disabledfix ?7116357 = enabledfix ?6012093 = 1 ? ? ??fix ?7512227 = enabledfix ?7891471 = disabledfix ?5394888 = enabledfix ?7539815 = enabledfix ?7534257 = enabledfix ?8355120 = enabledfix ?7657126 = enabledfix ?7176746 = enabledfix ?7375077 = enabledfix ?8247017 = enabledfix ?8544722 = disabledfix ?7831070 = enabledfix ?7675944 = enabledfix ?8619631 = disabledfix ?8213977 = enabledfix ?4444536 = disabledfix ?8602185 = enabledfix ?8323407 = enabledfix ?8287870 = enabledfix ?8467123 = enabledfix ?8560951 = disabledfix ?8725296 = disabledfix ?8371884 = enabledfix ?5099019 = disabledfix ?7289023 = enabledfix ?7148689 = enabledfix ?6766962 = enabledfix ?6688200 = enabledfix ?6671155 = enabledfix ?6656356 = enabledfix ?5554865 = enabledfix ?6503543 = disabledfix ?7032684 = enabledfix ?8855396 = enabled************************************* ?--各種隱含參數PARAMETERS WITH DEFAULT VALUES******************************optimizer_mode_hinted ? ? ? ? ? ? ? = falseoptimizer_features_hinted ? ? ? ? ? = 0.0.0parallel_execution_enabled ? ? ? ? ?= trueparallel_query_forced_dop ? ? ? ? ? = 0parallel_dml_forced_dop ? ? ? ? ? ? = 0parallel_ddl_forced_degree ? ? ? ? ?= 0parallel_ddl_forced_instances ? ? ? = 0_query_rewrite_fudge ? ? ? ? ? ? ? ?= 90optimizer_features_enable ? ? ? ? ? = 10.2.0.5_optimizer_search_limit ? ? ? ? ? ? = 5cpu_count ? ? ? ? ? ? ? ? ? ? ? ? ? = 1active_instance_count ? ? ? ? ? ? ? = 1parallel_threads_per_cpu ? ? ? ? ? ?= 2hash_area_size ? ? ? ? ? ? ? ? ? ? ?= 131072bitmap_merge_area_size ? ? ? ? ? ? ?= 1048576sort_area_size ? ? ? ? ? ? ? ? ? ? ?= 65536sort_area_retained_size ? ? ? ? ? ? = 0_sort_elimination_cost_ratio ? ? ? ?= 0_optimizer_block_size ? ? ? ? ? ? ? = 8192_sort_multiblock_read_count ? ? ? ? = 2_hash_multiblock_io_count ? ? ? ? ? = 0_db_file_optimizer_read_count ? ? ? = 16_optimizer_max_permutations ? ? ? ? = 2000pga_aggregate_target ? ? ? ? ? ? ? ?= 194560 KB_pga_max_size ? ? ? ? ? ? ? ? ? ? ? = 204800 KB_query_rewrite_maxdisjunct ? ? ? ? ?= 257_smm_auto_min_io_size ? ? ? ? ? ? ? = 56 KB_smm_auto_max_io_size ? ? ? ? ? ? ? = 248 KB_smm_min_size ? ? ? ? ? ? ? ? ? ? ? = 194 KB_smm_max_size ? ? ? ? ? ? ? ? ? ? ? = 38912 KB_smm_px_max_size ? ? ? ? ? ? ? ? ? ?= 97280 KB_cpu_to_io ? ? ? ? ? ? ? ? ? ? ? ? ?= 0_optimizer_undo_cost_change ? ? ? ? = 10.2.0.5parallel_query_mode ? ? ? ? ? ? ? ? = enabledparallel_dml_mode ? ? ? ? ? ? ? ? ? = disabledparallel_ddl_mode ? ? ? ? ? ? ? ? ? = enabledoptimizer_mode ? ? ? ? ? ? ? ? ? ? ?= all_rowssqlstat_enabled ? ? ? ? ? ? ? ? ? ? = false_optimizer_percent_parallel ? ? ? ? = 101_always_anti_join ? ? ? ? ? ? ? ? ? = choose_always_semi_join ? ? ? ? ? ? ? ? ? = choose_optimizer_mode_force ? ? ? ? ? ? ? = true_partition_view_enabled ? ? ? ? ? ? = true_always_star_transformation ? ? ? ? = false_query_rewrite_or_error ? ? ? ? ? ? = false_hash_join_enabled ? ? ? ? ? ? ? ? ?= truecursor_sharing ? ? ? ? ? ? ? ? ? ? ?= exact_b_tree_bitmap_plans ? ? ? ? ? ? ? ?= truestar_transformation_enabled ? ? ? ? = false_optimizer_cost_model ? ? ? ? ? ? ? = choose_new_sort_cost_estimate ? ? ? ? ? ? = true_complex_view_merging ? ? ? ? ? ? ? = true_unnest_subquery ? ? ? ? ? ? ? ? ? ?= true_eliminate_common_subexpr ? ? ? ? ? = true_pred_move_around ? ? ? ? ? ? ? ? ? = true_convert_set_to_join ? ? ? ? ? ? ? ?= false_push_join_predicate ? ? ? ? ? ? ? ?= true_push_join_union_view ? ? ? ? ? ? ? = true_fast_full_scan_enabled ? ? ? ? ? ? = true_optim_enhance_nnull_detection ? ? ?= true_parallel_broadcast_enabled ? ? ? ? = true_px_broadcast_fudge_factor ? ? ? ? ?= 100_ordered_nested_loop ? ? ? ? ? ? ? ?= true_no_or_expansion ? ? ? ? ? ? ? ? ? ?= falseoptimizer_index_cost_adj ? ? ? ? ? ?= 100optimizer_index_caching ? ? ? ? ? ? = 0_system_index_caching ? ? ? ? ? ? ? = 0_disable_datalayer_sampling ? ? ? ? = falsequery_rewrite_enabled ? ? ? ? ? ? ? = truequery_rewrite_integrity ? ? ? ? ? ? = enforced_query_cost_rewrite ? ? ? ? ? ? ? ? = true_query_rewrite_2 ? ? ? ? ? ? ? ? ? ?= true_query_rewrite_1 ? ? ? ? ? ? ? ? ? ?= true_query_rewrite_expression ? ? ? ? ? = true_query_rewrite_jgmigrate ? ? ? ? ? ?= true_query_rewrite_fpc ? ? ? ? ? ? ? ? ?= true_query_rewrite_drj ? ? ? ? ? ? ? ? ?= true_full_pwise_join_enabled ? ? ? ? ? ?= true_partial_pwise_join_enabled ? ? ? ? = true_left_nested_loops_random ? ? ? ? ? = true_improved_row_length_enabled ? ? ? ?= true_index_join_enabled ? ? ? ? ? ? ? ? = true_enable_type_dep_selectivity ? ? ? ?= true_improved_outerjoin_card ? ? ? ? ? ?= true_optimizer_adjust_for_nulls ? ? ? ? = true_optimizer_degree ? ? ? ? ? ? ? ? ? = 0_use_column_stats_for_function ? ? ?= true_subquery_pruning_enabled ? ? ? ? ? = true_subquery_pruning_mv_enabled ? ? ? ?= false_or_expand_nvl_predicate ? ? ? ? ? ?= true_like_with_bind_as_equality ? ? ? ? = false_table_scan_cost_plus_one ? ? ? ? ? = true_cost_equality_semi_join ? ? ? ? ? ?= true_default_non_equality_sel_check ? ? = true_new_initial_join_orders ? ? ? ? ? ?= true_oneside_colstat_for_equijoins ? ? ?= true_optim_peek_user_binds ? ? ? ? ? ? ?= true_minimal_stats_aggregation ? ? ? ? ?= true_force_temptables_for_gsets ? ? ? ? = falseworkarea_size_policy ? ? ? ? ? ? ? ?= auto_smm_auto_cost_enabled ? ? ? ? ? ? ?= true_gs_anti_semi_join_allowed ? ? ? ? ?= true_optim_new_default_join_sel ? ? ? ? = trueoptimizer_dynamic_sampling ? ? ? ? ?= 2_pre_rewrite_push_pred ? ? ? ? ? ? ?= true_optimizer_new_join_card_computation = true_union_rewrite_for_gs ? ? ? ? ? ? ? = yes_gset_mvs_generalized_pruning_enabled ? ? ? ?= true_optim_adjust_for_part_skews ? ? ? ?= true_force_datefold_trunc ? ? ? ? ? ? ? = falsestatistics_level ? ? ? ? ? ? ? ? ? ?= typical_optimizer_system_stats_usage ? ? ? = trueskip_unusable_indexes ? ? ? ? ? ? ? = true_remove_aggr_subquery ? ? ? ? ? ? ? = true_optimizer_push_down_distinct ? ? ? = 0_dml_monitoring_enabled ? ? ? ? ? ? = true_optimizer_undo_changes ? ? ? ? ? ? = false_predicate_elimination_enabled ? ? ?= true_nested_loop_fudge ? ? ? ? ? ? ? ? ?= 100_project_view_columns ? ? ? ? ? ? ? = true_local_communication_costing_enabled = true_local_communication_ratio ? ? ? ? ?= 50_query_rewrite_vop_cleanup ? ? ? ? ?= true_slave_mapping_enabled ? ? ? ? ? ? ?= true_optimizer_cost_based_transformation = linear_optimizer_mjc_enabled ? ? ? ? ? ? ?= true_right_outer_hash_enable ? ? ? ? ? ?= true_spr_push_pred_refspr ? ? ? ? ? ? ? = true_optimizer_cache_stats ? ? ? ? ? ? ?= false_optimizer_cbqt_factor ? ? ? ? ? ? ?= 50_optimizer_squ_bottomup ? ? ? ? ? ? = true_fic_area_size ? ? ? ? ? ? ? ? ? ? ?= 131072_optimizer_skip_scan_enabled ? ? ? ?= true_optimizer_cost_filter_pred ? ? ? ? = false_optimizer_sortmerge_join_enabled ? = true_optimizer_join_sel_sanity_check ? ?= true_mmv_query_rewrite_enabled ? ? ? ? ?= true_bt_mmv_query_rewrite_enabled ? ? ? = true_add_stale_mv_to_dependency_list ? ?= true_distinct_view_unnesting ? ? ? ? ? ?= false_optimizer_dim_subq_join_sel ? ? ? ?= true_optimizer_disable_strans_sanity_checks = 0_optimizer_compute_index_stats ? ? ?= true_push_join_union_view2 ? ? ? ? ? ? ?= true_optimizer_ignore_hints ? ? ? ? ? ? = false_optimizer_random_plan ? ? ? ? ? ? ?= 0_query_rewrite_setopgrw_enable ? ? ?= true_optimizer_correct_sq_selectivity ? = true_disable_function_based_index ? ? ? = false_optimizer_join_order_control ? ? ? = 3_optimizer_cartesian_enabled ? ? ? ?= true_optimizer_starplan_enabled ? ? ? ? = true_extended_pruning_enabled ? ? ? ? ? = true_optimizer_push_pred_cost_based ? ? = true_sql_model_unfold_forloops ? ? ? ? ?= run_time_enable_dml_lock_escalation ? ? ? ? = false_bloom_filter_enabled ? ? ? ? ? ? ? = true_update_bji_ipdml_enabled ? ? ? ? ? = 0_optimizer_extended_cursor_sharing ?= udo_dm_max_shared_pool_pct ? ? ? ? ? ? = 1_optimizer_cost_hjsmj_multimatch ? ?= true_optimizer_transitivity_retain ? ? ?= true_px_pwg_enabled ? ? ? ? ? ? ? ? ? ? = trueoptimizer_secure_view_merging ? ? ? = true_optimizer_join_elimination_enabled = trueflashback_table_rpi ? ? ? ? ? ? ? ? = non_fbt_optimizer_cbqt_no_size_restriction = true_optimizer_enhanced_filter_push ? ? = true_optimizer_filter_pred_pullup ? ? ? = true_rowsrc_trace_level ? ? ? ? ? ? ? ? = 0_simple_view_merging ? ? ? ? ? ? ? ?= true_optimizer_rownum_pred_based_fkr ? ?= true_optimizer_better_inlist_costing ? ?= all_optimizer_self_induced_cache_cost ?= false_optimizer_min_cache_blocks ? ? ? ? = 10_optimizer_or_expansion ? ? ? ? ? ? = depth_optimizer_order_by_elimination_enabled = true_optimizer_outer_to_anti_enabled ? ?= true_selfjoin_mv_duplicates ? ? ? ? ? ? = true_dimension_skip_null ? ? ? ? ? ? ? ?= true_force_rewrite_enable ? ? ? ? ? ? ? = false_optimizer_star_tran_in_with_clause = true_optimizer_complex_pred_selectivity = true_optimizer_connect_by_cost_based ? ?= true_gby_hash_aggregation_enabled ? ? ? = true_globalindex_pnum_filter_enabled ? ?= true_fix_control_key ? ? ? ? ? ? ? ? ? ?= 0_optimizer_skip_scan_guess ? ? ? ? ?= false_enable_row_shipping ? ? ? ? ? ? ? ?= false_row_shipping_threshold ? ? ? ? ? ? = 80_row_shipping_explain ? ? ? ? ? ? ? = false_optimizer_rownum_bind_default ? ? ?= 10_first_k_rows_dynamic_proration ? ? = true_px_ual_serial_input ? ? ? ? ? ? ? ?= true_with_subquery ? ? ? ? ? ? ? ? ? ? ?= OPTIMIZER_optimizer_native_full_outer_join ? = off_optimizer_star_trans_min_cost ? ? ?= 0_optimizer_star_trans_min_ratio ? ? = 0_optimizer_fkr_index_cost_bias ? ? ?= 10_optimizer_connect_by_combine_sw ? ?= true_optimizer_use_subheap ? ? ? ? ? ? ?= true_optimizer_or_expansion_subheap ? ? = true_optimizer_sortmerge_join_inequality = true_optimizer_use_histograms ? ? ? ? ? = true_optimizer_enable_density_improvements = false_mv_generalized_oj_refresh_opt ? ? ?= true_optimizer_connect_by_cb_whr_only ? = false*********************************Bug Fix Control Environment ? ? ? ? ? ? --各種以修復未修復的bug***************************fix ?4611850 = enabledfix ?4663804 = enabledfix ?4663698 = enabledfix ?4545833 = enabledfix ?3499674 = disabledfix ?4584065 = enabledfix ?4602374 = enabledfix ?4569940 = enabledfix ?4631959 = enabledfix ?4519340 = enabledfix ?4550003 = enabledfix ?4488689 = enabledfix ?3118776 = enabledfix ?4519016 = enabledfix ?4487253 = enabledfix ?4556762 = 15 ? ? ?fix ?4728348 = enabledfix ?4723244 = enabledfix ?4554846 = enabledfix ?4175830 = enabledfix ?4722900 = enabledfix ?5094217 = enabledfix ?4904890 = enabledfix ?4483286 = disabledfix ?4969880 = disabledfix ?4711525 = enabledfix ?4717546 = enabledfix ?4904838 = enabledfix ?5005866 = enabledfix ?4600710 = enabledfix ?5129233 = enabledfix ?5195882 = enabledfix ?5084239 = enabledfix ?4595987 = enabledfix ?4134994 = enabledfix ?5104624 = enabledfix ?4908162 = enabledfix ?5015557 = enabledfix ?5263572 = enabledfix ?4483240 = enabledfix ?5099909 = enabledfix ?5650477 = enabledfix ?4273361 = enabledfix ?5694984 = enabledfix ?5449488 = enabledfix ?5236908 = enabledfix ?5618040 = enabledfix ?5634346 = enabledfix ?5220356 = enabledfix ?5611962 = enabledfix ?5741121 = enabledfix ?5547058 = enabledfix ?5762598 = enabledfix ?5509293 = enabledfix ?5396162 = enabledfix ?5891471 = enabledfix ?4872602 = disabledfix ?5882954 = enabledfix ?5884780 = enabledfix ?5680702 = enabledfix ?5240607 = enabledfix ?4924149 = enabledfix ?4752814 = enabledfix ?4583239 = enabledfix ?5949981 = enabledfix ?5096560 = enabledfix ?5838613 = enabledfix ?5482831 = enabledfix ?5624216 = enabledfix ?5976822 = enabledfix ?5741044 = enabledfix ?5385629 = enabledfix ?5705630 = disabledfix ?5483301 = enabledfix ?6122894 = enabledfix ?5842686 = disabledfix ?6006300 = disabledfix ?6070954 = enabledfix ?2492766 = enabledfix ?6042205 = enabledfix ?5302124 = enabledfix ?6051211 = enabledfix ?5620485 = enabledfix ?4545802 = enabledfix ?4716096 = enabledfix ?5259048 = enabledfix ?6163564 = enabledfix ?6082745 = enabledfix ?5944076 = enabledfix ?4878299 = enabledfix ?5288623 = enabledfix ?5570494 = enabledfix ?5387148 = enabledfix ?4605810 = enabledfix ?4704779 = enabledfix ?5547895 = enabledfix ?6188881 = enabledfix ?5872956 = enabledfix ?4708389 = enabledfix ?3151991 = enabledfix ?3426050 = enabledfix ? 599680 = enabledfix ?5505157 = enabledfix ?5996801 = enabledfix ?5765456 = 0 ? ? ??fix ?6494943 = enabledfix ?6251917 = enabledfix ?6087237 = enabledfix ?6239971 = enabledfix ?6062266 = enabledfix ?5520732 = 0 ? ? ??fix ?6151963 = enabledfix ?4567767 = enabledfix ?6007259 = enabledfix ?6694548 = enabledfix ?6923730 = 0 ? ? ??fix ?6468287 = enabledfix ?6714199 = enabledfix ?3801750 = enabledfix ?5902962 = enabledfix ?3056297 = enabledfix ?6440977 = disabledfix ?6904146 = enabledfix ?6221403 = enabledfix ?5466973 = enabledfix ?6138746 = enabledfix ?6399597 = disabledfix ?6029469 = enabledfix ?6073325 = enabledfix ?5648287 = 3 ? ? ??fix ?6670551 = disabledfix ?5416118 = 1 ? ? ??fix ?5714944 = enabledfix ?6617866 = enabledfix ?6329318 = enabledfix ?6972291 = disabledfix ?6434668 = enabledfix ?5893768 = enabledfix ?7345484 = enabledfix ?6688831 = disabledfix ?5284200 = enabledfix ?6146906 = enabledfix ?5868560 = disabledfix ?6610822 = enabledfix ?6514189 = enabledfix ?5406763 = enabledfix ?6778642 = enabledfix ?7208131 = enabledfix ?7430474 = enabledfix ?6282093 = enabledfix ?6845871 = enabledfix ?7249095 = enabledfix ?6430500 = disabledfix ?4663702 = enabledfix ?6282944 = enabledfix ?7170213 = enabledfix ?5844495 = enabledfix ?6429113 = enabledfix ?6530596 = enabledfix ?6120483 = enabledfix ?7325597 = enabledfix ?7298570 = enabledfix ?7236148 = enabledfix ?6528872 = enabledfix ?6119382 = enabledfix ?7237571 = enabledfix ?6626018 = disabledfix ?5199213 = enabledfix ?7138405 = enabledfix ?6365442 = enabledfix ?7555510 = enabledfix ?6487603 = enabledfix ?6469667 = enabledfix ?7576476 = enabledfix ?7295298 = enabledfix ?6326934 = enabledfix ?6771838 = enabledfix ?7521266 = enabledfix ?6669103 = enabledfix ?7259468 = enabledfix ?7597059 = enabledfix ?6773613 = enabledfix ?6782437 = enabledfix ?6897034 = enabledfix ?6994194 = enabledfix ?5936366 = enabledfix ?3320140 = enabledfix ?5578791 = enabledfix ?6990305 = enabledfix ?4619997 = enabledfix ?7263214 = enabledfix ?7576516 = enabledfix ?5922070 = enabledfix ?7165898 = enabledfix ?7519687 = enabledfix ?6987082 = disabledfix ?7132036 = enabledfix ?6418771 = enabledfix ?6267621 = enabledfix ?6520717 = disabledfix ?6838105 = enabledfix ?7679490 = disabledfix ?7272039 = enabledfix ?7676897 = disabledfix ?3628118 = enabledfix ?7281191 = enabledfix ?7692248 = disabledfix ?7116357 = enabledfix ?6012093 = 1 ? ? ??fix ?7512227 = enabledfix ?7891471 = disabledfix ?5394888 = enabledfix ?7539815 = enabledfix ?7534257 = enabledfix ?8355120 = enabledfix ?7657126 = enabledfix ?7176746 = enabledfix ?7375077 = enabledfix ?8247017 = enabledfix ?8544722 = disabledfix ?7831070 = enabledfix ?7675944 = enabledfix ?8619631 = disabledfix ?8213977 = enabledfix ?4444536 = disabledfix ?8602185 = enabledfix ?8323407 = enabledfix ?8287870 = enabledfix ?8467123 = enabledfix ?8560951 = disabledfix ?8725296 = disabledfix ?8371884 = enabledfix ?5099019 = disabledfix ?7289023 = enabledfix ?7148689 = enabledfix ?6766962 = enabledfix ?6688200 = enabledfix ?6671155 = enabledfix ?6656356 = enabledfix ?5554865 = enabledfix ?6503543 = disabledfix ?7032684 = enabledfix ?8855396 = enabled***************************************PARAMETERS IN OPT_PARAM HINT ?--是否使用OPT_PARAM 提示改的參數**************************** *************************************** Column Usage Monitoring is ON: tracking level = 1 *************************************** **************** QUERY BLOCK TEXT **************** select /*+10053 test*/* from dao_objects1 t1 ,dao_objects2 t2,emp t3 where t1.object_id=t2.object_id and t2.object_id=t3.empno ? ********************* QUERY BLOCK SIGNATURE ? ?--語句塊標記 ********************* qb name was generated signature (optimizer): qb_name=SEL$1 nbfros=3 flg=0fro(0): flg=0 objn=52978 hint_alias="T1"@"SEL$1"fro(1): flg=0 objn=52983 hint_alias="T2"@"SEL$1"fro(2): flg=0 objn=52984 hint_alias="T3"@"SEL$1" ***************************** SYSTEM STATISTICS INFORMATION ?--假設系統統計信息 *****************************Using NOWORKLOAD StatsCPUSPEED: 714 millions instruction/sec ? ? ? ? ? ? ? ? ? ? CPU頻率IOTFRSPEED: 4096 bytes per millisecond (default is 4096) ?IO傳輸時間IOSEEKTIM: 10 milliseconds (default is 10) ? ? ? ? ? ? ? ?IO找尋時間 *************************************** BASE STATISTICAL INFORMATION *********************** Table Stats::Table: EMP ?Alias: T3 ?(NOT ANALYZED)#Rows: 327 ?#Blks: ?4 ?AvgRowLen: ?100.00Column (#1): EMPNO(NUMBER) ?NO STATISTICS (using defaults)AvgLen: 13.00 NDV: 10 Nulls: 0 Density: 0.097859 *********************** Table Stats::Table: DAO_OBJECTS2 ?Alias: T2 ?(NOT ANALYZED)#Rows: 58483 ?#Blks: ?716 ?AvgRowLen: ?100.00Column (#4): OBJECT_ID(NUMBER) ?NO STATISTICS (using defaults)AvgLen: 13.00 NDV: 1828 Nulls: 0 Density: 5.4717e-04 *********************** Table Stats::Table: DAO_OBJECTS1 ?Alias: T1 ?(NOT ANALYZED)#Rows: 58483 ?#Blks: ?716 ?AvgRowLen: ?100.00Column (#4): OBJECT_ID(NUMBER) ?NO STATISTICS (using defaults)AvgLen: 13.00 NDV: 1828 Nulls: 0 Density: 5.4717e-04 Index Stats::Index: IDX_OBJECTS1 ?Col#: 4LVLS: 1 ?#LB: 112 ?#DK: 50625 ?LB/K: 1.00 ?DB/K: 1.00 ?CLUF: 1110.00Index: IDX_OBJECTS2 ?Col#: 2LVLS: 1 ?#LB: 249 ?#DK: 30262 ?LB/K: 1.00 ?DB/K: 1.00 ?CLUF: 25016.00Index: IDX_OBJECTS3 ?Col#: 6LVLS: 1 ?#LB: 140 ?#DK: 41 ?LB/K: 3.00 ?DB/K: 53.00 ?CLUF: 2209.00Index: IDX_OBJECTS4 ?Col#: 1LVLS: 1 ?#LB: 117 ?#DK: 27 ?LB/K: 4.00 ?DB/K: 49.00 ?CLUF: 1342.00 *************************************** SINGLE TABLE ACCESS PATH-----------------------------------------BEGIN Single Table Cardinality Estimation----------------------------------------- *** 2015-12-06 20:04:48.804 ** Performing dynamic sampling initial checks. ** ** Dynamic sampling initial checks returning TRUE (level = 2). ** Dynamic sampling updated index stats.: IDX_OBJECTS1, blocks=123 ** Dynamic sampling updated table stats.: blocks=716 *** 2015-12-06 20:04:48.805 ** Generated dynamic sampling query: ?--這段動態采樣query text :? SELECT /* OPT_DYN_SAMP */ /*+ ALL_ROWS IGNORE_WHERE_CLAUSE NO_PARALLEL(SAMPLESUB) opt_param('parallel_execution_enabled', 'false') NO_PARALLEL_INDEX(SAMPLESUB) NO_SQL_TUNE */ NVL(SUM(C1),0), NVL(SUM(C2),0), COUNT(DISTINCT C3), NVL(SUM(CASE WHEN C3 IS NULL THEN 1 ELSE 0 END),0) FROM (SELECT /*+ NO_PARALLEL("T1") FULL("T1") NO_PARALLEL_INDEX("T1") */ 1 AS C1, 1 AS C2, "T1"."OBJECT_ID" AS C3 FROM "DAO_OBJECTS1" SAMPLE BLOCK (8.798883 , 1) SEED (1) "T1") SAMPLESUB *** 2015-12-06 20:04:48.811 ** Executed dynamic sampling query:level : 2sample pct. : 8.798883actual sample size : 4374filtered sample card. : 4374orig. card. : 58483block cnt. table stat. : 716block cnt. for sampling: 716max. sample block cnt. : 64sample block cnt. : 63ndv C3 : 4374scaled : 49710.00nulls C4 : 0scaled : 0.00min. sel. est. : -1.00000000 ** Dynamic sampling col. stats.:Column (#4): OBJECT_ID(NUMBER) ?Part#: 0AvgLen: 22.00 NDV: 49710 Nulls: 0 Density: 2.0117e-05 ** Using dynamic sampling NULLs estimates. ** Using dynamic sampling NDV estimates.Scaled NDVs using cardinality = 49711. ** Using dynamic sampling card. : 49711 ** Dynamic sampling updated table card.Table: DAO_OBJECTS1 ?Alias: T1 ? ??Card: Original: 49711 ?Rounded: 49711 ?Computed: 49710.86 ?Non Adjusted: 49710.86-----------------------------------------END ? Single Table Cardinality Estimation-----------------------------------------Access Path: TableScanCost: ?160.86 ?Resp: 160.86 ?Degree: 0Cost_io: 158.00 ?Cost_cpu: 24486241Resp_io: 158.00 ?Resp_cpu: 24486241Best:: AccessPath: TableScanCost: 160.86 ?Degree: 1 ?Resp: 160.86 ?Card: 49710.86 ?Bytes: 0 *************************************** SINGLE TABLE ACCESS PATH-----------------------------------------BEGIN Single Table Cardinality Estimation----------------------------------------- *** 2015-12-06 20:04:48.811 ** Performing dynamic sampling initial checks. ** ** Dynamic sampling initial checks returning TRUE (level = 2). ** Dynamic sampling updated table stats.: blocks=716 *** 2015-12-06 20:04:48.811 ** Generated dynamic sampling query:query text :? SELECT /* OPT_DYN_SAMP */ /*+ ALL_ROWS IGNORE_WHERE_CLAUSE NO_PARALLEL(SAMPLESUB) opt_param('parallel_execution_enabled', 'false') NO_PARALLEL_INDEX(SAMPLESUB) NO_SQL_TUNE */ NVL(SUM(C1),0), NVL(SUM(C2),0), COUNT(DISTINCT C3), NVL(SUM(CASE WHEN C3 IS NULL THEN 1 ELSE 0 END),0) FROM (SELECT /*+ NO_PARALLEL("T2") FULL("T2") NO_PARALLEL_INDEX("T2") */ 1 AS C1, 1 AS C2, "T2"."OBJECT_ID" AS C3 FROM "DAO_OBJECTS2" SAMPLE BLOCK (8.798883 , 1) SEED (1) "T2") SAMPLESUB *** 2015-12-06 20:04:48.814 ** Executed dynamic sampling query:level : 2sample pct. : 8.798883actual sample size : 3720filtered sample card. : 3720orig. card. : 58483block cnt. table stat. : 716block cnt. for sampling: 716max. sample block cnt. : 64sample block cnt. : 63ndv C3 : 3720scaled : 42278.00nulls C4 : 0scaled : 0.00min. sel. est. : -1.00000000 ** Dynamic sampling col. stats.:Column (#4): OBJECT_ID(NUMBER) ?Part#: 0AvgLen: 22.00 NDV: 42278 Nulls: 0 Density: 2.3653e-05 ** Using dynamic sampling NULLs estimates. ** Using dynamic sampling NDV estimates.Scaled NDVs using cardinality = 42278. ** Using dynamic sampling card. : 42278 ** Dynamic sampling updated table card.Table: DAO_OBJECTS2 ?Alias: T2 ? ??Card: Original: 42278 ?Rounded: 42278 ?Computed: 42278.10 ?Non Adjusted: 42278.10-----------------------------------------END ? Single Table Cardinality Estimation-----------------------------------------Access Path: TableScanCost: ?160.52 ?Resp: 160.52 ?Degree: 0Cost_io: 158.00 ?Cost_cpu: 21587501Resp_io: 158.00 ?Resp_cpu: 21587501Best:: AccessPath: TableScanCost: 160.52 ?Degree: 1 ?Resp: 160.52 ?Card: 42278.10 ?Bytes: 0 *************************************** SINGLE TABLE ACCESS PATH-----------------------------------------BEGIN Single Table Cardinality Estimation----------------------------------------- *** 2015-12-06 20:04:48.814 ** Performing dynamic sampling initial checks. ** ** Dynamic sampling initial checks returning TRUE (level = 2). ** Dynamic sampling updated table stats.: blocks=4 *** 2015-12-06 20:04:48.814 ** Generated dynamic sampling query:query text :? SELECT /* OPT_DYN_SAMP */ /*+ ALL_ROWS IGNORE_WHERE_CLAUSE NO_PARALLEL(SAMPLESUB) opt_param('parallel_execution_enabled', 'false') NO_PARALLEL_INDEX(SAMPLESUB) NO_SQL_TUNE */ NVL(SUM(C1),0), NVL(SUM(C2),0), COUNT(DISTINCT C3), NVL(SUM(CASE WHEN C3 IS NULL THEN 1 ELSE 0 END),0) FROM (SELECT /*+ NO_PARALLEL("T3") FULL("T3") NO_PARALLEL_INDEX("T3") */ 1 AS C1, 1 AS C2, "T3"."EMPNO" AS C3 FROM "EMP" "T3") SAMPLESUB *** 2015-12-06 20:04:48.814 ** Executed dynamic sampling query:level : 2sample pct. : 100.000000actual sample size : 14filtered sample card. : 14orig. card. : 327block cnt. table stat. : 4block cnt. for sampling: 4max. sample block cnt. : 64sample block cnt. : 4ndv C3 : 14scaled : 14.00nulls C4 : 0scaled : 0.00min. sel. est. : -1.00000000 ** Dynamic sampling col. stats.:Column (#1): EMPNO(NUMBER) ?Part#: 0AvgLen: 22.00 NDV: 14 Nulls: 0 Density: 0.071429 ** Using dynamic sampling NULLs estimates. ** Using dynamic sampling NDV estimates.Scaled NDVs using cardinality = 14. ** Using dynamic sampling card. : 14 ** Dynamic sampling updated table card.Table: EMP ?Alias: T3 ? ??Card: Original: 14 ?Rounded: 14 ?Computed: 14.00 ?Non Adjusted: 14.00-----------------------------------------END ? Single Table Cardinality Estimation-----------------------------------------Access Path: TableScanCost: ?3.00 ?Resp: 3.00 ?Degree: 0Cost_io: 3.00 ?Cost_cpu: 32546Resp_io: 3.00 ?Resp_cpu: 32546Best:: AccessPath: TableScanCost: 3.00 ?Degree: 1 ?Resp: 3.00 ?Card: 14.00 ?Bytes: 0 *************************************** OPTIMIZER STATISTICS AND COMPUTATIONS ?--優化器統計信息計算 *************************************** GENERAL PLANS *************************************** Considering cardinality-based initial join order. ?--考慮使用基數來決定連接方式 Permutations for Starting Table :0 *********************** Join order[1]: ?EMP[T3]#0 ?DAO_OBJECTS2[T2]#1 ?DAO_OBJECTS1[T1]#2 *************** Now joining: DAO_OBJECTS2[T2]#1 ?如果使用NL *************** NL JoinOuter table: Card: 14.00 ?Cost: 3.00 ?Resp: 3.00 ?Degree: 1 ?Bytes: 87Inner table: DAO_OBJECTS2 ?Alias: T2Access Path: TableScanNL Join: ?Cost: 2232.28 ?Resp: 2232.28 ?Degree: 1Cost_io: 2197.00 ?Cost_cpu: 302258680Resp_io: 2197.00 ?Resp_cpu: 302258680Best NL cost: 2232.28resc: 2232.28 resc_io: 2197.00 resc_cpu: 302258680resp: 2232.28 resp_io: 2197.00 resp_cpu: 302258680 Join Card: ?14.00 = outer (14.00) * inner (42278.10) * sel (2.3653e-05) Join Card - Rounded: 14 Computed: 14.00 --如果使用sort merge SM JoinOuter table:?resc: 3.00 ?card 14.00 ?bytes: 87 ?deg: 1 ?resp: 3.00Inner table: DAO_OBJECTS2 ?Alias: T2resc: 160.52 ?card: 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52using dmeth: 2 ?#groups: 1SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ? ? 1 Row size: ? ? ? ? ?106 Total Rows: ? ? ? ? ? ? 14Initial runs: ? ? ? ? 1 Merge passes: ? ? ? ?0 IO Cost / pass: ? ? ? ? ?0Total IO sort cost: 0 ? ? ?Total CPU sort cost: 8569266Total Temp space used: 0SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1062 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?42278Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?576Total IO sort cost: 1638 ? ? ?Total CPU sort cost: 63992179Total Temp space used: 17785000SM join: Resc: 1809.99 ?Resp: 1809.99 ?[multiMatchCost=0.00]SM cost: 1809.99resc: 1809.99 resc_io: 1799.00 resc_cpu: 94181492resp: 1809.99 resp_io: 1799.00 resp_cpu: 94181492 --如果使用hash join HA JoinOuter table:?resc: 3.00 ?card 14.00 ?bytes: 87 ?deg: 1 ?resp: 3.00Inner table: DAO_OBJECTS2 ?Alias: T2resc: 160.52 ?card: 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52using dmeth: 2 ?#groups: 1Cost per ptn: 0.99 ?#ptns: 1hash_area: 124 (max=9728) buildfrag: 1 ?probefrag: 976 ?ppasses: 1Hash join: Resc: 164.52 ?Resp: 164.52 ?[multiMatchCost=0.00]HA cost: 164.52resc: 164.52 resc_io: 161.00 resc_cpu: 30133379resp: 164.52 resp_io: 161.00 resp_cpu: 30133379 Best:: JoinMethod: HashCost: 164.52 ?Degree: 1 ?Resp: 164.52 ?Card: 14.00 ?Bytes: 264 *************** Now joining: DAO_OBJECTS1[T1]#2? *************** NL JoinOuter table: Card: 14.00 ?Cost: 164.52 ?Resp: 164.52 ?Degree: 1 ?Bytes: 264Inner table: DAO_OBJECTS1 ?Alias: T1Access Path: TableScanNL Join: ?Cost: 2398.53 ?Resp: 2398.53 ?Degree: 1Cost_io: 2355.00 ?Cost_cpu: 372940754Resp_io: 2355.00 ?Resp_cpu: 372940754Access Path: index (AllEqJoinGuess)Index: IDX_OBJECTS1resc_io: 2.00 ?resc_cpu: 16273ix_sel: 2.0117e-05 ?ix_sel_with_filters: 2.0117e-05NL Join: Cost: 192.54 ?Resp: 192.54 ?Degree: 1Cost_io: 189.00 ?Cost_cpu: 30361199Resp_io: 189.00 ?Resp_cpu: 30361199Best NL cost: 192.54resc: 192.54 resc_io: 189.00 resc_cpu: 30361199resp: 192.54 resp_io: 189.00 resp_cpu: 30361199 Join Card: ?14.00 = outer (14.00) * inner (49710.86) * sel (2.0117e-05) Join Card - Rounded: 14 Computed: 14.00 SM JoinOuter table:?resc: 164.52 ?card 14.00 ?bytes: 264 ?deg: 1 ?resp: 164.52Inner table: DAO_OBJECTS1 ?Alias: T1resc: 160.86 ?card: 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86using dmeth: 2 ?#groups: 1SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ? ? 1 Row size: ? ? ? ? ?301 Total Rows: ? ? ? ? ? ? 14Initial runs: ? ? ? ? 1 Merge passes: ? ? ? ?0 IO Cost / pass: ? ? ? ? ?0Total IO sort cost: 0 ? ? ?Total CPU sort cost: 8569266Total Temp space used: 0SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1248 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?49711Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?676Total IO sort cost: 1924 ? ? ?Total CPU sort cost: 74242412Total Temp space used: 20898000SM join: Resc: 2259.04 ?Resp: 2259.04 ?[multiMatchCost=0.00]SM cost: 2259.04resc: 2259.04 resc_io: 2243.00 resc_cpu: 137431298resp: 2259.04 resp_io: 2243.00 resp_cpu: 137431298 HA JoinOuter table:?resc: 164.52 ?card 14.00 ?bytes: 264 ?deg: 1 ?resp: 164.52Inner table: DAO_OBJECTS1 ?Alias: T1resc: 160.86 ?card: 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86using dmeth: 2 ?#groups: 1Cost per ptn: 1.08 ?#ptns: 1hash_area: 124 (max=9728) buildfrag: 1 ?probefrag: 1147 ?ppasses: 1Hash join: Resc: 326.46 ?Resp: 326.46 ?[multiMatchCost=0.00]HA cost: 326.46resc: 326.46 resc_io: 319.00 resc_cpu: 63876252resp: 326.46 resp_io: 319.00 resp_cpu: 63876252 Best:: JoinMethod: NestedLoopCost: 192.54 ?Degree: 1 ?Resp: 192.54 ?Card: 14.00 ?Bytes: 441 *********************** Best so far: Table#: 0 ?cost: 3.0038 ?card: 14.0000 ?bytes: 1218Table#: 1 ?cost: 164.5174 ?card: 14.0000 ?bytes: 3696Table#: 2 ?cost: 192.5440 ?card: 14.0003 ?bytes: 6174 *********************** Join order[2]: ?EMP[T3]#0 ?DAO_OBJECTS1[T1]#2 ?DAO_OBJECTS2[T2]#1 ?--第二種連接順序 *************** Now joining: DAO_OBJECTS1[T1]#2 *************** NL JoinOuter table: Card: 14.00 ?Cost: 3.00 ?Resp: 3.00 ?Degree: 1 ?Bytes: 87Inner table: DAO_OBJECTS1 ?Alias: T1Access Path: TableScanNL Join: ?Cost: 2237.02 ?Resp: 2237.02 ?Degree: 1Cost_io: 2197.00 ?Cost_cpu: 342839920Resp_io: 2197.00 ?Resp_cpu: 342839920Best NL cost: 2237.02resc: 2237.02 resc_io: 2197.00 resc_cpu: 342839920resp: 2237.02 resp_io: 2197.00 resp_cpu: 342839920 Join Card: ?695952.00 = outer (14.00) * inner (49710.86) * sel (1) Join Card - Rounded: 695952 Computed: 695952.00 Join order aborted: cost > best plan cost *********************** *********************** Join order[3]: ?DAO_OBJECTS2[T2]#1 ?EMP[T3]#0 ?DAO_OBJECTS1[T1]#2 ?--第三種連接順序 *************** Now joining: EMP[T3]#0 *************** NL JoinOuter table: Card: 42278.10 ?Cost: 160.52 ?Resp: 160.52 ?Degree: 1 ?Bytes: 177Inner table: EMP ?Alias: T3Access Path: TableScanNL Join: ?Cost: 37316.14 ?Resp: 37316.14 ?Degree: 1Cost_io: 37153.00 ?Cost_cpu: 1397557142Resp_io: 37153.00 ?Resp_cpu: 1397557142Best NL cost: 37316.14resc: 37316.14 resc_io: 37153.00 resc_cpu: 1397557142resp: 37316.14 resp_io: 37153.00 resp_cpu: 1397557142 Join Card: ?14.00 = outer (42278.10) * inner (14.00) * sel (2.3653e-05) Join Card - Rounded: 14 Computed: 14.00 SM JoinOuter table:?resc: 160.52 ?card 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52Inner table: EMP ?Alias: T3resc: 3.00 ?card: 14.00 ?bytes: 87 ?deg: 1 ?resp: 3.00using dmeth: 2 ?#groups: 1SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1062 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?42278Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?576Total IO sort cost: 1638 ? ? ?Total CPU sort cost: 63992179Total Temp space used: 17785000SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ? ? 1 Row size: ? ? ? ? ?106 Total Rows: ? ? ? ? ? ? 14Initial runs: ? ? ? ? 1 Merge passes: ? ? ? ?0 IO Cost / pass: ? ? ? ? ?0Total IO sort cost: 0 ? ? ?Total CPU sort cost: 8569266Total Temp space used: 0SM join: Resc: 1809.99 ?Resp: 1809.99 ?[multiMatchCost=0.00]SM cost: 1809.99resc: 1809.99 resc_io: 1799.00 resc_cpu: 94181492resp: 1809.99 resp_io: 1799.00 resp_cpu: 94181492 HA JoinOuter table:?resc: 160.52 ?card 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52Inner table: EMP ?Alias: T3resc: 3.00 ?card: 14.00 ?bytes: 87 ?deg: 1 ?resp: 3.00using dmeth: 2 ?#groups: 1Cost per ptn: 380.71 ?#ptns: 1hash_area: 124 (max=9728) buildfrag: 976 ?probefrag: 1 ?ppasses: 1Hash join: Resc: 544.23 ?Resp: 544.23 ?[multiMatchCost=0.00] HA Join (swap)Outer table:?resc: 3.00 ?card 14.00 ?bytes: 87 ?deg: 1 ?resp: 3.00Inner table: DAO_OBJECTS2 ?Alias: T2resc: 160.52 ?card: 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52using dmeth: 2 ?#groups: 1Cost per ptn: 0.99 ?#ptns: 1hash_area: 124 (max=9728) buildfrag: 1 ?probefrag: 976 ?ppasses: 1Hash join: Resc: 164.52 ?Resp: 164.52 ?[multiMatchCost=0.00]HA cost: 164.52resc: 164.52 resc_io: 161.00 resc_cpu: 30133379resp: 164.52 resp_io: 161.00 resp_cpu: 30133379 Best:: JoinMethod: HashCost: 164.52 ?Degree: 1 ?Resp: 164.52 ?Card: 14.00 ?Bytes: 264 *************** Now joining: DAO_OBJECTS1[T1]#2 *************** NL JoinOuter table: Card: 14.00 ?Cost: 164.52 ?Resp: 164.52 ?Degree: 1 ?Bytes: 264Inner table: DAO_OBJECTS1 ?Alias: T1Access Path: TableScanNL Join: ?Cost: 2398.53 ?Resp: 2398.53 ?Degree: 1Cost_io: 2355.00 ?Cost_cpu: 372940754Resp_io: 2355.00 ?Resp_cpu: 372940754Access Path: index (AllEqJoinGuess)Index: IDX_OBJECTS1resc_io: 2.00 ?resc_cpu: 16273ix_sel: 2.0117e-05 ?ix_sel_with_filters: 2.0117e-05NL Join: Cost: 192.54 ?Resp: 192.54 ?Degree: 1Cost_io: 189.00 ?Cost_cpu: 30361199Resp_io: 189.00 ?Resp_cpu: 30361199Best NL cost: 192.54resc: 192.54 resc_io: 189.00 resc_cpu: 30361199resp: 192.54 resp_io: 189.00 resp_cpu: 30361199 Join Card: ?14.00 = outer (14.00) * inner (49710.86) * sel (2.0117e-05) Join Card - Rounded: 14 Computed: 14.00 SM JoinOuter table:?resc: 164.52 ?card 14.00 ?bytes: 264 ?deg: 1 ?resp: 164.52Inner table: DAO_OBJECTS1 ?Alias: T1resc: 160.86 ?card: 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86using dmeth: 2 ?#groups: 1SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ? ? 1 Row size: ? ? ? ? ?301 Total Rows: ? ? ? ? ? ? 14Initial runs: ? ? ? ? 1 Merge passes: ? ? ? ?0 IO Cost / pass: ? ? ? ? ?0Total IO sort cost: 0 ? ? ?Total CPU sort cost: 8569266Total Temp space used: 0SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1248 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?49711Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?676Total IO sort cost: 1924 ? ? ?Total CPU sort cost: 74242412Total Temp space used: 20898000SM join: Resc: 2259.04 ?Resp: 2259.04 ?[multiMatchCost=0.00]SM cost: 2259.04resc: 2259.04 resc_io: 2243.00 resc_cpu: 137431298resp: 2259.04 resp_io: 2243.00 resp_cpu: 137431298 HA JoinOuter table:?resc: 164.52 ?card 14.00 ?bytes: 264 ?deg: 1 ?resp: 164.52Inner table: DAO_OBJECTS1 ?Alias: T1resc: 160.86 ?card: 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86using dmeth: 2 ?#groups: 1Cost per ptn: 1.08 ?#ptns: 1hash_area: 124 (max=9728) buildfrag: 1 ?probefrag: 1147 ?ppasses: 1Hash join: Resc: 326.46 ?Resp: 326.46 ?[multiMatchCost=0.00]HA cost: 326.46resc: 326.46 resc_io: 319.00 resc_cpu: 63876252resp: 326.46 resp_io: 319.00 resp_cpu: 63876252 Join order aborted: cost > best plan cost *********************** *********************** Join order[4]: ?DAO_OBJECTS2[T2]#1 ?DAO_OBJECTS1[T1]#2 ?EMP[T3]#0 ?--第四重連接順序 *************** Now joining: DAO_OBJECTS1[T1]#2 *************** NL JoinOuter table: Card: 42278.10 ?Cost: 160.52 ?Resp: 160.52 ?Degree: 1 ?Bytes: 177Inner table: DAO_OBJECTS1 ?Alias: T1Access Path: TableScanNL Join: ?Cost: 6742794.61 ?Resp: 6742794.61 ?Degree: 1Cost_io: 6621951.00 ?Cost_cpu: 1035250886190Resp_io: 6621951.00 ?Resp_cpu: 1035250886190Access Path: index (AllEqJoinGuess)Index: IDX_OBJECTS1resc_io: 2.00 ?resc_cpu: 16273ix_sel: 2.0117e-05 ?ix_sel_with_filters: 2.0117e-05NL Join: Cost: 84796.83 ?Resp: 84796.83 ?Degree: 1Cost_io: 84714.00 ?Cost_cpu: 709572322Resp_io: 84714.00 ?Resp_cpu: 709572322Best NL cost: 84796.83resc: 84796.83 resc_io: 84714.00 resc_cpu: 709572322resp: 84796.83 resp_io: 84714.00 resp_cpu: 709572322 Join Card: ?42278.82 = outer (42278.10) * inner (49710.86) * sel (2.0117e-05) Join Card - Rounded: 42279 Computed: 42278.82 SM JoinOuter table:?resc: 160.52 ?card 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52Inner table: DAO_OBJECTS1 ?Alias: T1resc: 160.86 ?card: 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86using dmeth: 2 ?#groups: 1SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1062 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?42278Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?576Total IO sort cost: 1638 ? ? ?Total CPU sort cost: 63992179Total Temp space used: 17785000SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1248 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?49711Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?676Total IO sort cost: 1924 ? ? ?Total CPU sort cost: 74242412Total Temp space used: 20898000SM join: Resc: 3899.51 ?Resp: 3899.51 ?[multiMatchCost=0.00]SM cost: 3899.51resc: 3899.51 resc_io: 3878.00 resc_cpu: 184308333resp: 3899.51 resp_io: 3878.00 resp_cpu: 184308333 HA JoinOuter table:?resc: 160.52 ?card 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52Inner table: DAO_OBJECTS1 ?Alias: T1resc: 160.86 ?card: 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86using dmeth: 2 ?#groups: 1Cost per ptn: 825.42 ?#ptns: 1hash_area: 124 (max=9728) buildfrag: 976 ?probefrag: 1147 ?ppasses: 1Hash join: Resc: 1146.80 ?Resp: 1146.80 ?[multiMatchCost=0.00]HA cost: 1146.80resc: 1146.80 resc_io: 1138.00 resc_cpu: 75350579resp: 1146.80 resp_io: 1138.00 resp_cpu: 75350579 Join order aborted: cost > best plan cost *********************** *********************** Join order[5]: ?DAO_OBJECTS1[T1]#2 ?EMP[T3]#0 ?DAO_OBJECTS2[T2]#1 *************** Now joining: EMP[T3]#0 *************** NL JoinOuter table: Card: 49710.86 ?Cost: 160.86 ?Resp: 160.86 ?Degree: 1 ?Bytes: 177Inner table: EMP ?Alias: T3Access Path: TableScanNL Join: ?Cost: 43848.71 ?Resp: 43848.71 ?Degree: 1Cost_io: 43657.00 ?Cost_cpu: 1642368516Resp_io: 43657.00 ?Resp_cpu: 1642368516Best NL cost: 43848.71resc: 43848.71 resc_io: 43657.00 resc_cpu: 1642368516resp: 43848.71 resp_io: 43657.00 resp_cpu: 1642368516 Join Card: ?695952.00 = outer (49710.86) * inner (14.00) * sel (1) Join Card - Rounded: 695952 Computed: 695952.00 Join order aborted: cost > best plan cost *********************** *********************** Join order[6]: ?DAO_OBJECTS1[T1]#2 ?DAO_OBJECTS2[T2]#1 ?EMP[T3]#0 *************** Now joining: DAO_OBJECTS2[T2]#1 *************** NL JoinOuter table: Card: 49710.86 ?Cost: 160.86 ?Resp: 160.86 ?Degree: 1 ?Bytes: 177Inner table: DAO_OBJECTS2 ?Alias: T2Access Path: TableScanNL Join: ?Cost: 7911414.25 ?Resp: 7911414.25 ?Degree: 1Cost_io: 7786145.00 ?Cost_cpu: 1073164727320Resp_io: 7786145.00 ?Resp_cpu: 1073164727320Best NL cost: 7911414.25resc: 7911414.25 resc_io: 7786145.00 resc_cpu: 1073164727320resp: 7911414.25 resp_io: 7786145.00 resp_cpu: 1073164727320 Join Card: ?42278.82 = outer (49710.86) * inner (42278.10) * sel (2.0117e-05) Join Card - Rounded: 42279 Computed: 42278.82 SM JoinOuter table:?resc: 160.86 ?card 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86Inner table: DAO_OBJECTS2 ?Alias: T2resc: 160.52 ?card: 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52using dmeth: 2 ?#groups: 1SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1248 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?49711Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?676Total IO sort cost: 1924 ? ? ?Total CPU sort cost: 74242412Total Temp space used: 20898000SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1062 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?42278Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?576Total IO sort cost: 1638 ? ? ?Total CPU sort cost: 63992179Total Temp space used: 17785000SM join: Resc: 3899.51 ?Resp: 3899.51 ?[multiMatchCost=0.00]SM cost: 3899.51resc: 3899.51 resc_io: 3878.00 resc_cpu: 184308333resp: 3899.51 resp_io: 3878.00 resp_cpu: 184308333 SM Join (with index on outer)Access Path: index (FullScan)Index: IDX_OBJECTS1resc_io: 1234.00 ?resc_cpu: 38656607ix_sel: 1 ?ix_sel_with_filters: 1Cost: 1238.51 ?Resp: 1238.51 ?Degree: 1Outer table:?resc: 1238.51 ?card 49710.86 ?bytes: 177 ?deg: 1 ?resp: 1238.51Inner table: DAO_OBJECTS2 ?Alias: T2resc: 160.52 ?card: 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52using dmeth: 2 ?#groups: 1SORT resource ? ? ?Sort statisticsSort width: ? ? ? ? 226 Area size: ? ? ?198656 Max Area size: ? ?39845888Degree: ? ? ? ? ? ? ? 1Blocks to Sort: ? ?1062 Row size: ? ? ? ? ?205 Total Rows: ? ? ? ? ?42278Initial runs: ? ? ? ? 2 Merge passes: ? ? ? ?1 IO Cost / pass: ? ? ? ?576Total IO sort cost: 1638 ? ? ?Total CPU sort cost: 63992179Total Temp space used: 17785000SM join: Resc: 3044.50 ?Resp: 3044.50 ?[multiMatchCost=0.00] HA JoinOuter table:?resc: 160.86 ?card 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86Inner table: DAO_OBJECTS2 ?Alias: T2resc: 160.52 ?card: 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52using dmeth: 2 ?#groups: 1Cost per ptn: 825.37 ?#ptns: 1hash_area: 124 (max=9728) buildfrag: 1147 ?probefrag: 976 ?ppasses: 1Hash join: Resc: 1146.75 ?Resp: 1146.75 ?[multiMatchCost=0.00] HA Join (swap)Outer table:?resc: 160.52 ?card 42278.10 ?bytes: 177 ?deg: 1 ?resp: 160.52Inner table: DAO_OBJECTS1 ?Alias: T1resc: 160.86 ?card: 49710.86 ?bytes: 177 ?deg: 1 ?resp: 160.86using dmeth: 2 ?#groups: 1Cost per ptn: 825.42 ?#ptns: 1hash_area: 124 (max=9728) buildfrag: 976 ?probefrag: 1147 ?ppasses: 1Hash join: Resc: 1146.80 ?Resp: 1146.80 ?[multiMatchCost=0.00]HA cost: 1146.80resc: 1146.80 resc_io: 1138.00 resc_cpu: 75350579resp: 1146.80 resp_io: 1138.00 resp_cpu: 75350579 Join order aborted: cost > best plan cost *********************** (newjo-stop-1) k:0, spcnt:0, perm:6, maxperm:2000 ********************************* Number of join permutations tried: 6 ********************************* (newjo-save) ? ?[0 1 2 ] Final - All Rows Plan: ?Best join order: 1Cost: 192.5440 ?Degree: 1 ?Card: 14.0000 ?Bytes: 6174Resc: 192.5440 ?Resc_io: 189.0000 ?Resc_cpu: 30361199Resp: 192.5440 ?Resp_io: 189.0000 ?Resc_cpu: 30361199 kkoipt: Query block SEL$1 (#0) ******* UNPARSED QUERY IS ******* SELECT "T1"."OWNER" "OWNER","T1"."OBJECT_NAME" "OBJECT_NAME","T1"."SUBOBJECT_NAME" "SUBOBJECT_NAME","T1"."OBJECT_ID" "OBJECT_ID","T1"."DATA_OBJECT_ID" "DATA_OBJECT_ID","T1"."OBJECT_TYPE" "OBJECT_TYPE","T1"."CREATED" "CREATED","T1"."LAST_DDL_TIME" "LAST_DDL_TIME","T1"."TIMESTAMP" "TIMESTAMP","T1"."STATUS" "STATUS","T1"."TEMPORARY" "TEMPORARY","T1"."GENERATED" "GENERATED","T1"."SECONDARY" "SECONDARY","T2"."OWNER" "OWNER","T2"."OBJECT_NAME" "OBJECT_NAME","T2"."SUBOBJECT_NAME" "SUBOBJECT_NAME","T2"."OBJECT_ID" "OBJECT_ID","T2"."DATA_OBJECT_ID" "DATA_OBJECT_ID","T2"."OBJECT_TYPE" "OBJECT_TYPE","T2"."CREATED" "CREATED","T2"."LAST_DDL_TIME" "LAST_DDL_TIME","T2"."TIMESTAMP" "TIMESTAMP","T2"."STATUS" "STATUS","T2"."TEMPORARY" "TEMPORARY","T2"."GENERATED" "GENERATED","T2"."SECONDARY" "SECONDARY","T3"."EMPNO" "EMPNO","T3"."ENAME" "ENAME","T3"."JOB" "JOB","T3"."MGR" "MGR","T3"."HIREDATE" "HIREDATE","T3"."SAL" "SAL","T3"."COMM" "COMM","T3"."DEPTNO" "DEPTNO" FROM "DAO"."DAO_OBJECTS1" "T1","DAO"."DAO_OBJECTS2" "T2","DAO"."EMP" "T3" WHERE "T1"."OBJECT_ID"="T2"."OBJECT_ID" AND "T2"."OBJECT_ID"="T3"."EMPNO" kkoqbc-subheap (delete addr=0x2ac377a8c2c0, in-use=35728, alloc=36920) kkoqbc-end: call(in-use=85552, alloc=147392), compile(in-use=61960, alloc=62240) apadrv-end: call(in-use=85552, alloc=147392), compile(in-use=63032, alloc=66384)sql_id=5p2ahbv0mbgm8. Current SQL statement for this session: select /*+10053 test*/* from dao_objects1 t1 ,dao_objects2 t2,emp t3 where t1.object_id=t2.object_id and t2.object_id=t3.empno ?============ Plan Table ? --定下的執行計劃 ============ ---------------------------------------------------+-----------------------------------+ | Id ?| Operation ? ? ? ? ? ? ? ? ? ?| Name ? ? ? ?| Rows ?| Bytes | Cost ?| Time ? ? ?| ---------------------------------------------------+-----------------------------------+ | 0 ? | SELECT STATEMENT ? ? ? ? ? ? | ? ? ? ? ? ? | ? ? ? | ? ? ? | ? 193 | ? ? ? ? ? | | 1 ? | ?TABLE ACCESS BY INDEX ROWID | DAO_OBJECTS1| ? ? 1 | ? 177 | ? ? 2 | ?00:00:01 | | 2 ? | ? NESTED LOOPS ? ? ? ? ? ? ? | ? ? ? ? ? ? | ? ?14 | ?6174 | ? 193 | ?00:00:03 | | 3 ? | ? ?HASH JOIN ? ? ? ? ? ? ? ? | ? ? ? ? ? ? | ? ?14 | ?3696 | ? 165 | ?00:00:02 | | 4 ? | ? ? TABLE ACCESS FULL ? ? ? ?| EMP ? ? ? ? | ? ?14 | ?1218 | ? ? 3 | ?00:00:01 | | 5 ? | ? ? TABLE ACCESS FULL ? ? ? ?| DAO_OBJECTS2| ? 41K | 7308K | ? 161 | ?00:00:02 | | 6 ? | ? ?INDEX RANGE SCAN ? ? ? ? ?| IDX_OBJECTS1| ? ? 1 | ? ? ? | ? ? 1 | ?00:00:01 | ---------------------------------------------------+-----------------------------------+ Predicate Information: ---------------------- 3 - access("T2"."OBJECT_ID"="T3"."EMPNO") 6 - access("T1"."OBJECT_ID"="T2"."OBJECT_ID")Content of other_xml column ===========================db_version ? ? : 10.2.0.5parse_schema ? : DAOdynamic_sampling: yesplan_hash ? ? ?: 3860464216Outline Data:/*+BEGIN_OUTLINE_DATAIGNORE_OPTIM_EMBEDDED_HINTSOPTIMIZER_FEATURES_ENABLE('10.2.0.5')ALL_ROWSOUTLINE_LEAF(@"SEL$1")FULL(@"SEL$1" "T3"@"SEL$1")FULL(@"SEL$1" "T2"@"SEL$1")INDEX(@"SEL$1" "T1"@"SEL$1" ("DAO_OBJECTS1"."OBJECT_ID"))LEADING(@"SEL$1" "T3"@"SEL$1" "T2"@"SEL$1" "T1"@"SEL$1")USE_HASH(@"SEL$1" "T2"@"SEL$1")USE_NL(@"SEL$1" "T1"@"SEL$1")END_OUTLINE_DATA*/Optimizer environment:optimizer_mode_hinted ? ? ? ? ? ? ? = falseoptimizer_features_hinted ? ? ? ? ? = 0.0.0parallel_execution_enabled ? ? ? ? ?= trueparallel_query_forced_dop ? ? ? ? ? = 0parallel_dml_forced_dop ? ? ? ? ? ? = 0parallel_ddl_forced_degree ? ? ? ? ?= 0parallel_ddl_forced_instances ? ? ? = 0_query_rewrite_fudge ? ? ? ? ? ? ? ?= 90optimizer_features_enable ? ? ? ? ? = 10.2.0.5_optimizer_search_limit ? ? ? ? ? ? = 5cpu_count ? ? ? ? ? ? ? ? ? ? ? ? ? = 1active_instance_count ? ? ? ? ? ? ? = 1parallel_threads_per_cpu ? ? ? ? ? ?= 2hash_area_size ? ? ? ? ? ? ? ? ? ? ?= 131072bitmap_merge_area_size ? ? ? ? ? ? ?= 1048576sort_area_size ? ? ? ? ? ? ? ? ? ? ?= 65536sort_area_retained_size ? ? ? ? ? ? = 0_sort_elimination_cost_ratio ? ? ? ?= 0_optimizer_block_size ? ? ? ? ? ? ? = 8192_sort_multiblock_read_count ? ? ? ? = 2_hash_multiblock_io_count ? ? ? ? ? = 0_db_file_optimizer_read_count ? ? ? = 16_optimizer_max_permutations ? ? ? ? = 2000pga_aggregate_target ? ? ? ? ? ? ? ?= 194560 KB_pga_max_size ? ? ? ? ? ? ? ? ? ? ? = 204800 KB_query_rewrite_maxdisjunct ? ? ? ? ?= 257_smm_auto_min_io_size ? ? ? ? ? ? ? = 56 KB_smm_auto_max_io_size ? ? ? ? ? ? ? = 248 KB_smm_min_size ? ? ? ? ? ? ? ? ? ? ? = 194 KB_smm_max_size ? ? ? ? ? ? ? ? ? ? ? = 38912 KB_smm_px_max_size ? ? ? ? ? ? ? ? ? ?= 97280 KB_cpu_to_io ? ? ? ? ? ? ? ? ? ? ? ? ?= 0_optimizer_undo_cost_change ? ? ? ? = 10.2.0.5parallel_query_mode ? ? ? ? ? ? ? ? = enabledparallel_dml_mode ? ? ? ? ? ? ? ? ? = disabledparallel_ddl_mode ? ? ? ? ? ? ? ? ? = enabledoptimizer_mode ? ? ? ? ? ? ? ? ? ? ?= all_rowssqlstat_enabled ? ? ? ? ? ? ? ? ? ? = false_optimizer_percent_parallel ? ? ? ? = 101_always_anti_join ? ? ? ? ? ? ? ? ? = choose_always_semi_join ? ? ? ? ? ? ? ? ? = choose_optimizer_mode_force ? ? ? ? ? ? ? = true_partition_view_enabled ? ? ? ? ? ? = true_always_star_transformation ? ? ? ? = false_query_rewrite_or_error ? ? ? ? ? ? = false_hash_join_enabled ? ? ? ? ? ? ? ? ?= truecursor_sharing ? ? ? ? ? ? ? ? ? ? ?= exact_b_tree_bitmap_plans ? ? ? ? ? ? ? ?= truestar_transformation_enabled ? ? ? ? = false_optimizer_cost_model ? ? ? ? ? ? ? = choose_new_sort_cost_estimate ? ? ? ? ? ? = true_complex_view_merging ? ? ? ? ? ? ? = true_unnest_subquery ? ? ? ? ? ? ? ? ? ?= true_eliminate_common_subexpr ? ? ? ? ? = true_pred_move_around ? ? ? ? ? ? ? ? ? = true_convert_set_to_join ? ? ? ? ? ? ? ?= false_push_join_predicate ? ? ? ? ? ? ? ?= true_push_join_union_view ? ? ? ? ? ? ? = true_fast_full_scan_enabled ? ? ? ? ? ? = true_optim_enhance_nnull_detection ? ? ?= true_parallel_broadcast_enabled ? ? ? ? = true_px_broadcast_fudge_factor ? ? ? ? ?= 100_ordered_nested_loop ? ? ? ? ? ? ? ?= true_no_or_expansion ? ? ? ? ? ? ? ? ? ?= falseoptimizer_index_cost_adj ? ? ? ? ? ?= 100optimizer_index_caching ? ? ? ? ? ? = 0_system_index_caching ? ? ? ? ? ? ? = 0_disable_datalayer_sampling ? ? ? ? = falsequery_rewrite_enabled ? ? ? ? ? ? ? = truequery_rewrite_integrity ? ? ? ? ? ? = enforced_query_cost_rewrite ? ? ? ? ? ? ? ? = true_query_rewrite_2 ? ? ? ? ? ? ? ? ? ?= true_query_rewrite_1 ? ? ? ? ? ? ? ? ? ?= true_query_rewrite_expression ? ? ? ? ? = true_query_rewrite_jgmigrate ? ? ? ? ? ?= true_query_rewrite_fpc ? ? ? ? ? ? ? ? ?= true_query_rewrite_drj ? ? ? ? ? ? ? ? ?= true_full_pwise_join_enabled ? ? ? ? ? ?= true_partial_pwise_join_enabled ? ? ? ? = true_left_nested_loops_random ? ? ? ? ? = true_improved_row_length_enabled ? ? ? ?= true_index_join_enabled ? ? ? ? ? ? ? ? = true_enable_type_dep_selectivity ? ? ? ?= true_improved_outerjoin_card ? ? ? ? ? ?= true_optimizer_adjust_for_nulls ? ? ? ? = true_optimizer_degree ? ? ? ? ? ? ? ? ? = 0_use_column_stats_for_function ? ? ?= true_subquery_pruning_enabled ? ? ? ? ? = true_subquery_pruning_mv_enabled ? ? ? ?= false_or_expand_nvl_predicate ? ? ? ? ? ?= true_like_with_bind_as_equality ? ? ? ? = false_table_scan_cost_plus_one ? ? ? ? ? = true_cost_equality_semi_join ? ? ? ? ? ?= true_default_non_equality_sel_check ? ? = true_new_initial_join_orders ? ? ? ? ? ?= true_oneside_colstat_for_equijoins ? ? ?= true_optim_peek_user_binds ? ? ? ? ? ? ?= true_minimal_stats_aggregation ? ? ? ? ?= true_force_temptables_for_gsets ? ? ? ? = falseworkarea_size_policy ? ? ? ? ? ? ? ?= auto_smm_auto_cost_enabled ? ? ? ? ? ? ?= true_gs_anti_semi_join_allowed ? ? ? ? ?= true_optim_new_default_join_sel ? ? ? ? = trueoptimizer_dynamic_sampling ? ? ? ? ?= 2_pre_rewrite_push_pred ? ? ? ? ? ? ?= true_optimizer_new_join_card_computation = true_union_rewrite_for_gs ? ? ? ? ? ? ? = yes_gset_mvs_generalized_pruning_enabled ? ? ? ?= true_optim_adjust_for_part_skews ? ? ? ?= true_force_datefold_trunc ? ? ? ? ? ? ? = falsestatistics_level ? ? ? ? ? ? ? ? ? ?= typical_optimizer_system_stats_usage ? ? ? = trueskip_unusable_indexes ? ? ? ? ? ? ? = true_remove_aggr_subquery ? ? ? ? ? ? ? = true_optimizer_push_down_distinct ? ? ? = 0_dml_monitoring_enabled ? ? ? ? ? ? = true_optimizer_undo_changes ? ? ? ? ? ? = false_predicate_elimination_enabled ? ? ?= true_nested_loop_fudge ? ? ? ? ? ? ? ? ?= 100_project_view_columns ? ? ? ? ? ? ? = true_local_communication_costing_enabled = true_local_communication_ratio ? ? ? ? ?= 50_query_rewrite_vop_cleanup ? ? ? ? ?= true_slave_mapping_enabled ? ? ? ? ? ? ?= true_optimizer_cost_based_transformation = linear_optimizer_mjc_enabled ? ? ? ? ? ? ?= true_right_outer_hash_enable ? ? ? ? ? ?= true_spr_push_pred_refspr ? ? ? ? ? ? ? = true_optimizer_cache_stats ? ? ? ? ? ? ?= false_optimizer_cbqt_factor ? ? ? ? ? ? ?= 50_optimizer_squ_bottomup ? ? ? ? ? ? = true_fic_area_size ? ? ? ? ? ? ? ? ? ? ?= 131072_optimizer_skip_scan_enabled ? ? ? ?= true_optimizer_cost_filter_pred ? ? ? ? = false_optimizer_sortmerge_join_enabled ? = true_optimizer_join_sel_sanity_check ? ?= true_mmv_query_rewrite_enabled ? ? ? ? ?= true_bt_mmv_query_rewrite_enabled ? ? ? = true_add_stale_mv_to_dependency_list ? ?= true_distinct_view_unnesting ? ? ? ? ? ?= false_optimizer_dim_subq_join_sel ? ? ? ?= true_optimizer_disable_strans_sanity_checks = 0_optimizer_compute_index_stats ? ? ?= true_push_join_union_view2 ? ? ? ? ? ? ?= true_optimizer_ignore_hints ? ? ? ? ? ? = false_optimizer_random_plan ? ? ? ? ? ? ?= 0_query_rewrite_setopgrw_enable ? ? ?= true_optimizer_correct_sq_selectivity ? = true_disable_function_based_index ? ? ? = false_optimizer_join_order_control ? ? ? = 3_optimizer_cartesian_enabled ? ? ? ?= true_optimizer_starplan_enabled ? ? ? ? = true_extended_pruning_enabled ? ? ? ? ? = true_optimizer_push_pred_cost_based ? ? = true_sql_model_unfold_forloops ? ? ? ? ?= run_time_enable_dml_lock_escalation ? ? ? ? = false_bloom_filter_enabled ? ? ? ? ? ? ? = true_update_bji_ipdml_enabled ? ? ? ? ? = 0_optimizer_extended_cursor_sharing ?= udo_dm_max_shared_pool_pct ? ? ? ? ? ? = 1_optimizer_cost_hjsmj_multimatch ? ?= true_optimizer_transitivity_retain ? ? ?= true_px_pwg_enabled ? ? ? ? ? ? ? ? ? ? = trueoptimizer_secure_view_merging ? ? ? = true_optimizer_join_elimination_enabled = trueflashback_table_rpi ? ? ? ? ? ? ? ? = non_fbt_optimizer_cbqt_no_size_restriction = true_optimizer_enhanced_filter_push ? ? = true_optimizer_filter_pred_pullup ? ? ? = true_rowsrc_trace_level ? ? ? ? ? ? ? ? = 0_simple_view_merging ? ? ? ? ? ? ? ?= true_optimizer_rownum_pred_based_fkr ? ?= true_optimizer_better_inlist_costing ? ?= all_optimizer_self_induced_cache_cost ?= false_optimizer_min_cache_blocks ? ? ? ? = 10_optimizer_or_expansion ? ? ? ? ? ? = depth_optimizer_order_by_elimination_enabled = true_optimizer_outer_to_anti_enabled ? ?= true_selfjoin_mv_duplicates ? ? ? ? ? ? = true_dimension_skip_null ? ? ? ? ? ? ? ?= true_force_rewrite_enable ? ? ? ? ? ? ? = false_optimizer_star_tran_in_with_clause = true_optimizer_complex_pred_selectivity = true_optimizer_connect_by_cost_based ? ?= true_gby_hash_aggregation_enabled ? ? ? = true_globalindex_pnum_filter_enabled ? ?= true_fix_control_key ? ? ? ? ? ? ? ? ? ?= 0_optimizer_skip_scan_guess ? ? ? ? ?= false_enable_row_shipping ? ? ? ? ? ? ? ?= false_row_shipping_threshold ? ? ? ? ? ? = 80_row_shipping_explain ? ? ? ? ? ? ? = false_optimizer_rownum_bind_default ? ? ?= 10_first_k_rows_dynamic_proration ? ? = true_px_ual_serial_input ? ? ? ? ? ? ? ?= true_with_subquery ? ? ? ? ? ? ? ? ? ? ?= OPTIMIZER_optimizer_native_full_outer_join ? = off_optimizer_star_trans_min_cost ? ? ?= 0_optimizer_star_trans_min_ratio ? ? = 0_optimizer_fkr_index_cost_bias ? ? ?= 10_optimizer_connect_by_combine_sw ? ?= true_optimizer_use_subheap ? ? ? ? ? ? ?= true_optimizer_or_expansion_subheap ? ? = true_optimizer_sortmerge_join_inequality = true_optimizer_use_histograms ? ? ? ? ? = true_optimizer_enable_density_improvements = false_mv_generalized_oj_refresh_opt ? ? ?= true_optimizer_connect_by_cb_whr_only ? = false*********************************Bug Fix Control Environment***************************fix ?4611850 = enabledfix ?4663804 = enabledfix ?4663698 = enabledfix ?4545833 = enabledfix ?3499674 = disabledfix ?4584065 = enabledfix ?4602374 = enabledfix ?4569940 = enabledfix ?4631959 = enabledfix ?4519340 = enabledfix ?4550003 = enabledfix ?4488689 = enabledfix ?3118776 = enabledfix ?4519016 = enabledfix ?4487253 = enabledfix ?4556762 = 15 ? 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? ??fix ?7512227 = enabledfix ?7891471 = disabledfix ?5394888 = enabledfix ?7539815 = enabledfix ?7534257 = enabledfix ?8355120 = enabledfix ?7657126 = enabledfix ?7176746 = enabledfix ?7375077 = enabledfix ?8247017 = enabledfix ?8544722 = disabledfix ?7831070 = enabledfix ?7675944 = enabledfix ?8619631 = disabledfix ?8213977 = enabledfix ?4444536 = disabledfix ?8602185 = enabledfix ?8323407 = enabledfix ?8287870 = enabledfix ?8467123 = enabledfix ?8560951 = disabledfix ?8725296 = disabledfix ?8371884 = enabledfix ?5099019 = disabledfix ?7289023 = enabledfix ?7148689 = enabledfix ?6766962 = enabledfix ?6688200 = enabledfix ?6671155 = enabledfix ?6656356 = enabledfix ?5554865 = enabledfix ?6503543 = disabledfix ?7032684 = enabledfix ?8855396 = enabled Query Block Registry: ********************* SEL$1 0x77a8eae0 (PARSER) [FINAL] Optimizer State Dump: call(in-use=98216, alloc=147392), compile(in-use=133624, alloc=181112)

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