[20160223]檢查redo日志的完整性.txt

--在論壇里問的問題：
http://www.itpub.net/thread-2053302-1-1.html

1.直接檢查dump logfile 后面加入?yún)?shù)validate。

SYS@book> @ &r/logfile
GROUP# THREAD# SEQUENCE#?????? BYTES BLOCKSIZE MEMBERS ARC STATUS???? FIRST_CHANGE# FIRST_TIME????????? NEXT_CHANGE# NEXT_TIME?????????? GROUP# STATUS???? TYPE?????? MEMBER??????????????????????? IS_
------ ------- --------- ----------- --------- ------- --- ---------- ------------- ------------------- ------------ ------------------- ------ ---------- ---------- ----------------------------- ---
???? 1?????? 1?????? 382??? 52428800?????? 512?????? 1 YES INACTIVE????? 1.3223E+10 2016-02-22 11:09:33?? 1.3223E+10 2016-02-22 22:00:13????? 1??????????? ONLINE???? /mnt/ramdisk/book/redo01.log? NO
???? 2?????? 1?????? 383??? 52428800?????? 512?????? 1 YES INACTIVE????? 1.3223E+10 2016-02-22 22:00:13?? 1.3223E+10 2016-02-22 22:36:19????? 2??????????? ONLINE???? /mnt/ramdisk/book/redo02.log? NO
???? 3?????? 1?????? 384??? 52428800?????? 512?????? 1 NO? CURRENT?????? 1.3223E+10 2016-02-22 22:36:19?? 2.8147E+14????????????????????????? 3??????????? ONLINE???? /mnt/ramdisk/book/redo03.log? NO

SYS@book> alter system dump logfile '/mnt/ramdisk/book/redo03.log' validate;
System altered.

2.使用DBMS_HM包：

BEGIN
?? DBMS_HM.RUN_CHECK
?? (
????? check_name?? => 'Redo Integrity Check'
???? ,run_name???? => 'redo_check'
???? ,input_params => 'SCN_TEXT=0'
?? );
END;
/

--可以加入scn_text 表示從某個scn開始。

SYS@book> select dbms_hm.get_run_report('redo_check') from dual;
DBMS_HM.GET_RUN_REPORT('REDO_CHECK')
-----------------------------------------------------------------
Basic Run Information
Run Name???????????????????? : redo_check
Run Id?????????????????????? : 4221
Check Name?????????????????? : Redo Integrity Check
Mode???????????????????????? : MANUAL
Status?????????????????????? : COMPLETED
Start Time?????????????????? : 2016-02-23 11:31:10.753766 +08:00
End Time???????????????????? : 2016-02-23 11:31:12.387839 +08:00
Error Encountered??????????? : 0
Source Incident Id?????????? : 0
Number of Incidents Created? : 0
Input Paramters for the Run
SCN_TEXT=0
Run Findings And Recommendations

--如何刪除，僅僅知道使用adrci：
adrci> show hm_run -p "RUN_ID=4261"
ADR Home = /u01/app/oracle/diag/rdbms/book/book:
*************************************************************************
**********************************************************
HM RUN RECORD 1
**********************************************************
?? RUN_ID??????????????????????? 4261
?? RUN_NAME????????????????????? redo_check1
?? CHECK_NAME??????????????????? Redo Integrity Check
?? NAME_ID?????????????????????? 4
?? MODE????????????????????????? 0
?? START_TIME??????????????????? 2016-02-23 11:34:27.605690 +08:00
?? RESUME_TIME?????????????????? <NULL>
?? END_TIME????????????????????? 2016-02-23 11:34:29.116844 +08:00
?? MODIFIED_TIME???????????????? 2016-02-23 11:34:35.227078 +08:00
?? TIMEOUT?????????????????????? 0
?? FLAGS???????????????????????? 0
?? STATUS??????????????????????? 5
?? SRC_INCIDENT_ID?????????????? 0
?? NUM_INCIDENTS???????????????? 0
?? ERR_NUMBER??????????????????? 0
?? REPORT_FILE?????????????????? /u01/app/oracle/diag/rdbms/book/book/hm/HMREPORT_redo_check1.hm
1 rows fetched

adrci> select * from HM_RUN where run_id=4261;

ADR Home = /u01/app/oracle/diag/rdbms/book/book:
*************************************************************************
RUN_ID RUN_NAME???? CHECK_NAME?????????? NAME_ID? MODE? START_TIME??????????????????????? RESUME_TIME END_TIME????????????????????????? MODIFIED_TIME???????????????????? TIMEOUT FLAGS STATUS SRC_INCIDENT_ID NUM_INCIDENTS ERR_NUMBER REPORT_FILE
------ ------------ -------------------- -------- ----- --------------------------------- ----------- --------------------------------- --------------------------------- ------- ----- ------ --------------- ------------- ---------- ----------------------------------------------------------------
4261?? redo_check1? Redo Integrity Check 4??????? 0???? 2016-02-23 11:34:27.605690 +08:00???????????? 2016-02-23 11:34:29.116844 +08:00 2016-02-23 11:34:35.227078 +08:00 0?????? 0???? 5????? 0?????????????? 0???????????? 0????????? /u01/app/oracle/diag/rdbms/book/book/hm/HMREPORT_redo_check1.hm
1 rows fetched

adrci> delete? from HM_RUN where run_id=4261;
1 Row Deleted

adrci> commit ;
Transaction Committed

adrci> select * from HM_RUN where run_id=4261;
ADR Home = /u01/app/oracle/diag/rdbms/book/book:
*************************************************************************
0 rows fetched

3. 使用rman的validate:

RMAN> validate archivelog sequence 4830;

Starting validate at 2016-02-23 14:50:18
using channel ORA_DISK_1
using channel ORA_DISK_2
using channel ORA_DISK_3
channel ORA_DISK_1: starting validation of archived log
channel ORA_DISK_1: specifying archived log(s) for validation
input archived log thread=1 sequence=4830 RECID=1626 STAMP=904574667
channel ORA_DISK_1: validation complete, elapsed time: 00:00:01
List of Archived Logs
=====================
Thrd Seq???? Status Blocks Failing Blocks Examined Name
---- ------- ------ -------------- --------------- ---------------
1??? 4830??? OK???? 0????????????? 67????????????? /u01/app/oracle11g/archivelog/1_4830_798551880.dbf
Finished validate at 2016-02-23 14:50:21

--理論講這個不能對redo 的STATUS=CURRENT驗證。不過可以作為一種補充方式。

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