archive log 日志已满处理方法

archive log归档日志已满处理方法

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 V ALUE

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

log_archive_dest string

log_archive_dest_1 string

log_archive_dest_10 string

3. 一般V ALUE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 sequence 360

Next log sequence to archive 360

Current log sequence 362

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 .13 0 1 ONLINELOG 2.93 0 3 ARCHIVELOG 96.62 0 141 BACKUPPIECE 0 0 0 IMAGECOPY 0 0 0 FLASHBACKLOG 0 0 0

5. 计算flash recovery area已经占用的空间

SQL> select sum(percent_space_used)*3/100 from 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 V ALUE

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

db_recovery_file_dest string /u01/app/oracle/flash_recovery_area db_recovery_file_dest_size big integer 5G

recovery_parallelism integer 0

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@sha3 10.2.0]# echo $ORACLE_BASE

/u01/app/oracle

[root@sha3 10.2.0]# 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）

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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@sha3 oracle]# rman target sys/pass

Recovery Manager: Release 10.2.0.4.0 - Production on Tue Jan 20 01:41:26 2009

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 .13 0 1 ONLINELOG 2.93 0 3 ARCHIVELOG 23.03 0 36 BACKUPPIECE 0 0 0 IMAGECOPY 0 0 0 FLASHBACKLOG 0 0 0

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;

archive log list;

alter database open;

如果还不行，则删除一些archlog log

SQL> select group#,sequence# from v$log;

GROUP# SEQUENCE#

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

1 62

3 64

2 63

原来是日志组一的一个日志不能归档

SQL> alter database clear unarchived logfile group 1;

alter database open;

最后，也可以指定位置Arch Log, 请按照如下配置

select name from v$datafile;

alter system set log_archive_dest='/opt/app/oracle/oradata/usagedb/arch' scope=spfile

或者修改大小

SQL> alter system set db_recovery_file_dest_size=3G scope=both;