ORACLE清理归档日志

清理归档日志：

archive log日志已满

ORA-00257:archiver error.Connect internal only,until freed错误的处理方法

1.用sys用户登录

sqlplus sys/pass@tt as sysdba

2.看看archiv log所在位置

SQL>show parameter log_archive_dest;

NAME TYPE VALUE

-----------------------------------------------------------------------------

log_archive_dest string

log_archive_dest_1string

log_archive_dest_10string

3.一般VALUE为空时，可以用archive log list;检查一下归档目录和log sequence SQL>archive log list;

Database log mode Archive Mode

Automatic archival Enabled

Archive destination USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence360

Next log sequence to archive360

Current log sequence362

4.检查flash recovery area的使用情况,可以看见archivelog已经很大了，达到96.62 SQL>select*from V$FLASH_RECOVERY_AREA_USAGE;

FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE NUMBER_OF_FILES

----------------------------------------------------------------------

CONTROLFILE.1301

ONLINELOG 2.9303

ARCHIVELOG96.620141

BACKUPPIECE000

IMAGECOPY000

FLASHBACKLOG000

5.计算flash recovery area已经占用的空间

SQL>select sum(percent_space_used)*3/100from v$flash_recovery_area_usage;

SUM(PERCENT_SPACE_USED)*3/100

-----------------------------

2.9904

6.找到recovery目录,show parameter recover

SQL>show parameter recover;

NAME TYPE VALUE

-----------------------------------------------------------------------------

db_recovery_file_dest string/u01/app/oracle/flash_recovery_area

db_recovery_file_dest_size big integer5G

recovery_parallelism integer0

7上述结果告诉我们，归档位置用的是默认值，放在flash_recovery_area下(db_recovery_file_dest 目录=/u01/app/oracle/flash_recovery_area)

[root@sha310.2.0]#echo$ORACLE_BASE

/u01/app/oracle

[root@sha310.2.0]#cd$ORACLE_BASE/flash_recovery_area/tt/archivelog

转移或清除对应的归档日志,删除一些不用的日期目录的文件，注意保留最后几个文件（比如360以后的）

---------------------------------------------------------------------------------------

注意:

在删除归档日志后，必须用RMAN维护控制文件，否则空间显示仍然不释放。

---------------------------------------------------------------------------------------

8.rman target sys/pass

[root@sha3oracle]#rman target sys/pass

Recovery Manager:Release10.2.0.4.0-Production on Tue Jan2001:41:262009

Copyright(c)1982,2007,Oracle.All rights reserved.

connected to target database:tt(DBID=4147983671)

9.检查一些无用的archivelog

RMAN>crosscheck archivelog all;

10.删除过期的归档

RMAN>delete expired archivelog all;

delete archivelog until time'sysdate-1';删除截止到前一天的所有archivelog

11.再次查询，发现使用率正常，已经降到23.03

SQL>select*from V$FLASH_RECOVERY_AREA_USAGE;

FILE_TYPE PERCENT_SPACE_USED PERCENT_SPACE_RECLAIMABLE

NUMBER_OF_FILES

----------------------------------------------------------------------

CONTROLFILE.1301

ONLINELOG 2.9303

ARCHIVELOG23.03036

BACKUPPIECE000

IMAGECOPY000

FLASHBACKLOG000

其它有用的Command:

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如果archive log模式下不能正常startup,则先恢复成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

shutdown immediate;

startup mount;

show parameter log_archive_dest;

alter database archivelog;