ORACLE清理歸檔日志

1、.清理歸檔日志：archive log日志已滿ORA-00257: archiver error. Connect internal only, until freed錯誤的處理方法1.用 sys 用戶登錄sqlplus sys/passtt as sysdba2.看看 archiv log 所在位置SQL> show parameter log_archive_dest;NAMETYPEVALUE- - -log_archive_deststringlog_archive_dest_1stringlog_archive_dest_10string3.一般 VALUE 為空時，可以用 a

2、rchive log list;檢查一下歸檔目錄和 log sequenceSQL> archive log list;Database log modeArchive ModeAutomatic archivalEnabledArchive destinationUSE_DB_RECOVERY_FILE_DESTOldest online log sequence360Next log sequence to archive360Current log sequence3624. 檢查 flash recovery area 的使用情況 ,可以看見 archivelog 已經(jīng)很大了，達(dá)

3、到 96.62 SQL> select * from V$FLASH_RECOVERY_AREA_USAGE;FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES- - - -1 / 4.CONTROLFILE.1301ONLINELOG2.9303ARCHIVELOG96.620141BACKUPPIECE000IMAGECOPY000FLASHBACKLOG0005. 計(jì)算 flash recovery area已經(jīng)占用的空間SQL> select sum(percent_space_use

4、d)*3/100 from v$flash_recovery_area_usage;SUM(PERCENT_SPACE_USED)*3/100-2.99046. 找到 recovery 目錄 , show parameter recoverSQL> show parameter recover;NAMETYPEVALUE- - -db_recovery_file_deststring/u01/app/oracle/flash_recovery_areadb_recovery_file_dest_sizebig integer5Grecovery_parallelisminteger07

5、上述結(jié)果告訴我們，歸檔位置用的是默認(rèn)值，放在flash_recovery_area下(db_recovery_file_dest目錄 =/u01/app/oracle/flash_recovery_area)rootsha3 10.2.0# echo $ORACLE_BASE/u01/app/oraclerootsha3 10.2.0# cd $ORACLE_BASE/flash_recovery_area/tt/archivelog轉(zhuǎn)移或清除對應(yīng)的歸檔日志 , 刪除一些不用的日期目錄的文件，注意保留最后幾個文件（比如360 以后的）-注意 :在刪除歸檔日志后，必須用RMAN 維護(hù)控制文件，否

6、則空間顯示仍然不釋放。-8. rman target sys/passrootsha3 oracle# rman target sys/passRecovery Manager: Release 10.2.0.4.0 - Production on Tue Jan 20 01:41:26 20092 / 4.Copyright (c) 1982, 2007, Oracle.All rights reserved.connected to target database: tt (DBID=4147983671)9. 檢查一些無用的 archivelog RMAN> crosscheck

7、archivelog all;10. 刪除過期的歸檔RMAN> delete expired archivelog all;delete archivelog until time 'sysdate-1' ;刪除截止到前一天的所有archivelog11. 再次查詢，發(fā)現(xiàn)使用率正常，已經(jīng)降到23.03SQL> select * from V$FLASH_RECOVERY_AREA_USAGE;FILE_TYPEPERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLENUMBER_OF_FILES- - - -CONTROLFILE.1

8、301ONLINELOG2.9303ARCHIVELOG23.03036BACKUPPIECE000IMAGECOPY000FLASHBACKLOG000其它有用的 Command:-如果 archive log 模式下不能正常 startup, 則先恢復(fù)成 noarchive log,startup成功后，再 shutdown;shutdown immediate;startup mount;alter database noarchivelog;alter database open;shutdown immediate;再次 startup 以 archive log 模式shutdow

9、n immediate;startup mount;show parameter log_archive_dest;alter database archivelog;3 / 4.archive log list;alter database open;如果還不行，則刪除一些archlog logSQL> select group#,sequence# from v$log;GROUP# SEQUENCE#- -162364263原來是日志組一的一個日志不能歸檔SQL> alter database clear unarchived logfile group 1;alter database open;最后，也可以指定位置Arch Log,請按照如下配置select name from v$datafile;alter system set log_arc