1. 啟動SQLPLUS，并用sys登陸到數(shù)據(jù)庫。 #su - oracle $>sqlplus / as sysdba 2. 查找數(shù)據(jù)庫的UNDO表空間名,確定當前例程正在使用的UNDO表空間： Show parameter undo_tablespace。3. 確認UNDO表空間； SQL> select name from v$tablespace; NAME ------------------------------ UNDOTBS1 4. 檢查數(shù)據(jù)庫UNDO表空間占用空間情況以及數(shù)據(jù)文件存放位置； select file_name, bytes / 1024 / 1024 / 1024from dba_data_fileswhere tablespace_name like 'UNDOTBS%';5. 查看回滾段的使用情況，哪個用戶正在使用回滾段的資源，如果有用戶最好更換時間（特別是生產(chǎn)環(huán)境）。 select s.username, u.namefrom v$transaction t, v$rollstat r, v$rollname u, v$session swhere s.taddr = t.addrand t.xidusn = r.usnand r.usn = u.usnorder by s.username;查詢結(jié)果為空的話就能刪除。6. 檢查UNDO Segment狀態(tài)； select usn,xacts,rssize / 1024 / 1024 / 1024,hwmsize / 1024 / 1024 / 1024,shrinksfrom v$rollstatorder by rssize;USN XACTS RSSIZE/1024/1024/1024 HWMSIZE/1024/1024/1024 SHRINKS 8 0 0.00017547607421875 3.11521148681641 700 3 0 0.00023651123046875 3.22954559326172 632 0 0 0.00035858154296875 0.00035858154296875 0 1 0 0.00206756591796875 3.04867553710938 920 10 0 0.00206756591796875 0.648170471191406 819 7 0 0.00231170654296875 3.94835662841797 730 4 0 0.00304412841796875 2.00011444091797 651 11 0 0.00695037841796875 2.26921844482422 740 9 0 0.00792694091796875 2.07530975341797 773 6 0 0.00792694091796875 1.31906890869141 775 2 0 0.00890350341796875 3.13677215576172 699 5 0 1.96833801269531 3.99906921386719 267這還原表空間中還存在12個回滾的對象。7. 創(chuàng)建新的UNDO表空間，并設置自動擴展參數(shù)； create undo tablespace undotbs2 datafile '/u02/pnrdb/undotbs2_01.dbf' size 100m reuse autoextend on next 100m maxsize unlimited;8. 切換UNDO表空間為新的UNDO表空間 ， 動態(tài)更改spfile配置文件；alter system set undo_tablespace=undotbs2 scope=both; 9.驗證當前數(shù)據(jù)庫的 UNDO表空間 SQL> show parameter undo NAME TYPE VALUE ------------------------------------ ----------- -------------- undo_management string AUTO undo_retention integer 900 undo_tablespace string UNDOTBS2 9. 等待原UNDO表空間所有UNDO SEGMENT OFFLINE； select usn,xacts,status,rssize / 1024 / 1024,hwmsize / 1024 / 1024,shrinksfrom v$rollstatorder by rssize;select usn,xacts,status,rssize / 1024 / 1024,hwmsize / 1024 / 1024,shrinksfrom v$rollstatorder by rssize; select t.segment_name, t.tablespace_name, t.segment_id, t.statusfrom dba_rollback_segs t;SEGMENT_NAME TABLESPACE_NAME SEGMENT_ID STATUS _SYSSMU1$ UNDOTBS1 1 OFFLINE _SYSSMU2$ UNDOTBS1 2 OFFLINE _SYSSMU3$ UNDOTBS1 3 OFFLINE _SYSSMU4$ UNDOTBS1 4 OFFLINE _SYSSMU5$ UNDOTBS1 5 OFFLINE _SYSSMU6$ UNDOTBS1 6 OFFLINE _SYSSMU7$ UNDOTBS1 7 OFFLINE _SYSSMU8$ UNDOTBS1 8 OFFLINE _SYSSMU9$ UNDOTBS1 9 OFFLINE _SYSSMU10$ UNDOTBS1 10 OFFLINE _SYSSMU11$ UNDOTBS1 11 OFFLINE _SYSSMU12$ UNDOTBS1 12 OFFLINE _SYSSMU13$ UNDOTBS1 13 OFFLINE _SYSSMU14$ UNDOTBS1 14 OFFLINE _SYSSMU15$ UNDOTBS1 15 OFFLINE _SYSSMU16$ UNDOTBS1 16 OFFLINE _SYSSMU17$ UNDOTBS1 17 OFFLINE _SYSSMU18$ UNDOTBS1 18 OFFLINE _SYSSMU19$ UNDOTBS1 19 OFFLINE _SYSSMU20$ UNDOTBS1 20 OFFLINE _SYSSMU21$ UNDOTBS1 21 OFFLINE _SYSSMU22$ UNDOTBS1 22 OFFLINE _SYSSMU23$ UNDOTBS1 23 OFFLINE _SYSSMU24$ UNDOTBS1 24 OFFLINE _SYSSMU25$ UNDOTBS1 25 OFFLINE _SYSSMU26$ UNDOTBS1 26 OFFLINE _SYSSMU27$ UNDOTBS1 27 OFFLINE _SYSSMU28$ UNDOTBS1 28 OFFLINE _SYSSMU29$ UNDOTBS1 29 OFFLINE _SYSSMU30$ UNDOTBS1 30 OFFLINE _SYSSMU31$ UNDOTBS1 31 OFFLINE _SYSSMU32$ UNDOTBS1 32 OFFLINE _SYSSMU33$ UNDOTBS1 33 OFFLINE _SYSSMU34$ UNDOTBS1 34 OFFLINE _SYSSMU35$ UNDOTBS1 35 OFFLINE上面對應的UNDOTBS1還原表空間所對應的回滾段均為OFFLINE10.到$ORACLE_HOME/dbs/init$ORACLE_SID.ora如下內(nèi)容是否發(fā)生變更： #cat $ORACLE_HOME/dbs/initddptest.ora …… *.undo_management=’AUTO’ *.undo_retention=10800 *.undo_tablespace=’UNDOTBS2’ ……如果沒有發(fā)生變更請執(zhí)行如下語句： SQL> create pfile from spfile; File created.11. 刪除原有的UNDO表空間；drop tablespace undotbs1 including contents and datafiles;12. os級別釋放undo數(shù)據(jù)文件；到root下執(zhí)行 lsof |grep /u02/pnrdb/undotbs01.dbflsof |grep /u02/pnrdb/undotbs01.dbf |awk '{printf"kill -9 "$2"\n"}' 《新程序員》：云原生和全面數(shù)字化實踐50位技術專家共同創(chuàng)作，文字、視頻、音頻交互閱讀

總結(jié)

以上是生活随笔為你收集整理的Oracle undo表空间爆满的解决的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。