archive log 日志已满
方法/步骤
SecureCRT登录服务器，切换用户oracle,连接oracle
[root@userbeta~]# su - oracle
[oracle@userbeta~]$ sqlplus /nolog
SQL> connect /as sysdba
检查flash recovery area的使用情况,可以看见archivelog已经很大了，达到99.94
SQL> select * from V$FLASH_RECOVERY_AREA_USAGE;
计算flash recovery area已经占用的空间
SQL> select sum(percent_space_used)*3/100 from v$flash_recovery_area_usage;
修改FLASH_RECOVERY_AREA的空间修改为6GB，修改前确认磁盘有足够空间
SQL> ALTER SYSTEM SET DB_RECOVERY_FILE_DEST_SIZE=8g;
现在来清理一下archivelog归档日志，生产环境建议备份
查询日志目录位置
show parameter recover;
删除归档日志,USERDB是数据库实例名
cd /u01/app/oracle/flash_recovery_area/USERDB/archivelog
使用root帐户删除该目录下的文件或者备份其它地方
使用rman 操作,内容太多，只做部分截图
[oracle@userbeta archivelog]$ rman
RMAN> connect target sys/sys_passwd
crosscheck backup;
delete obsolete;
delete expired backup;
crosscheck archivelog all;
delete expired archivelog all;
//此步会有提示，输入 YES 回车
host; //退出rman
确认是否操作成功
# sqlplus /nolog
SQL> connect /as sysdba
SQL> select * from V$FLASH_RECOVERY_AREA_USAGE;
删除完成，重新连接数据库
END
ORA-00257:
archiver error. Connect internal only, until freed 错误的处理方法
1. 用sys用户登录
sqlplus sys/pass@tt as sysdba
2. 看看archiv log所在位置
SQL> show parameter log_archive_dest; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ log_archive_dest string log_archive_dest_1 string log_archive_dest_10 string
3. 一般VALUE为空时，可以用archive log list;检查一下归档目录和log sequence
SQL> archive log list; Database log mode Archive Mode Automatic archival Enabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence 360 Next log sequence to archive 360 Current log sequence 362
4. 检查flash recovery area的使用情况,可以看见archivelog已经很大了，达到96.62
SQL> select * from V$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 VALUE ------------------------------------ ----------- ------------------------------ 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 $ORACLE_BASE/flash_recovery_area/tt/archivelog
转移或清除对应的归档日志, 删除一些不用的日期目录的文件，注意保留最后几个文件（比如360以后的）
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注意:
在删除归档日志后，必须用RMAN维护控制文件，否则空间显示仍然不释放。
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8. rman target sys/pass
[root@sha3 oracle]# rman target sys/pass Recovery Manager: Release 10.2.0.4.0 - Production on Tue Jan 20 01:41:26 2009 Copyright (c) 1982, 2007, Oracle. All rights reserved. connected to target database: tt (DBID=4147983671)
9. 检查一些无用的archivelog
RMAN> crosscheck archivelog all;
10. 删除过期的归档
RMAN> delete expired archivelog all; delete archivelog until time 'sysdate-1' ; 删除截止到前一天的所有archivelog
11. 再次查询，发现使用率正常，已经降到23.03
SQL> select * from V$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: ---------------------------------- 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;