工作环境ORACLE 11g 归档日志满了，手动删除出现 ora 异常。
注:工作环境是linux redhat 5
执行命令如下：
1. 进入rman
2. connect target /
3. crosscheck archivelog all;
4. delete expired archivelog all;
执行到最后一步出现异常
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
官方解释：
RMAN-08137 When deleting archivelogs even when Streams CAPTURE does not require them [ID 1079953.1]
RMAN is unable to delete archive logs from database even though they are not needed by CAPTURE process anymore.
如果想强制删除，执行命令
4. delete force expired archivelog all;
RMAN常用命令
1.RMAN> connect target / nocatalog
连接到目标数据库（不使用恢复目录数据库）
2.RMAN> show all;
显示rman配置
3.RMAN> report schema;
报告目标数据库的物理结构
4.RMAN> report obsolete;
报告陈旧备份
5.RMAN> report unrecoverable;
报告不可恢复的数据文件
6.RMAN> list backup;
RMAN> list backup of database;
RMAN> list backup of tablespace table_name;
RMAN> list backup of controlfile;
RMAN> list backup of spfile;
RMAN> list backupset id;
列出备份信息
7.RMAN> crosscheck backup;
RMAN> crosscheck backup of database;
RMAN> crosscheck backup of tablespace system;
RMAN> crosscheck backup of controlfile;
RMAN> crosscheck backup of spfile;
RMAN> crosscheck backup of archivelog all;
校验备份
8.RMAN>crosscheck archivelog all;
RMAN>delete noprompt expired archivelog all;
校验没有备份过的归档日志
8.RMAN> delete archivelog all;
刪除所有的Archivelog files
9.RMAN> delete force archivelog until time ‘sysdate -1’;
RMAN> delete noprompt force archivelog until time ‘sysdate -2’;
強制刪除昨天以前的archivelog files
10.RMAN> delete expired archivelog all;
刪除所有过期的Archivelog files
11.RMAN> delete obsolete; — 删除陈旧备份
RMAN> delete noprompt obsolete;
删除备份
12.RMAN> delete expired backup;
删除所有expired的备份（包括归档日志、控制文件、备份聚）
13.RMAN> delete backup;
删除所有备份
14.RMAN> change backupset id unavailable;
RMAN> change backupset id keep forever logs;
RMAN> change backupset id keep until time ‘sysdate+30’ logs;
RMAN> change backupset id nokeep;
改为长期备份
15.RMAN> configure retention policy to recovery window of 30 days;
改为基于时间的备份
16.RMAN> configure retention policy to redundancy n ;
改为基于冗余数量的备份
17.RMAN> configure retention policy to none;
取消备份保留策略：
18.RMAN> set archivelog destination to ‘e:\temp’;
设置归档日志存放在其它位置
不过切记,ORACLE归档日志对于ORACLE的数据恢复和备份非常重要，不到万不得已不要删除归档日志。
