RMAN删除归档日志出现RMAN-0813错误

橡皮草帽

数据库备份日志报错：
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process

DB版本为11.2.0.4，根据备策略，每天备份归档，并且自动删除档，保留一个星期的归档，执行如下命令：
delete noprompt archivelog until time 'sysdate-7'；

依然报错，部分信息如下：
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_24/thread_1_seq_2328.1241.1027887401 thread=1 sequence=2328
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_24/thread_1_seq_2329.1242.1027887719 thread=1 sequence=2329
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_24/thread_1_seq_2330.1243.1027887813 thread=1 sequence=2330
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_24/thread_1_seq_2331.1244.1027887873 thread=1 sequence=2331
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_25/thread_1_seq_2332.1245.1027902623 thread=1 sequence=2332
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_25/thread_1_seq_2333.1246.1027902719 thread=1 sequence=2333
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_25/thread_1_seq_2334.1247.1027908493 thread=1 sequence=2334
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_25/thread_1_seq_2335.1248.1027911721 thread=1 sequence=2335
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_26/thread_1_seq_2336.1249.1027989005 thread=1 sequence=2336
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_26/thread_1_seq_2337.1250.1027989067 thread=1 sequence=2337
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_26/thread_1_seq_2338.1251.1027990617 thread=1 sequence=2338
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_26/thread_1_seq_2339.1252.1028041713 thread=1 sequence=2339
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process
archived log file name=+CWDATA/sjjhdg/archivelog/2019_12_27/thread_1_seq_2340.1253.1028075413 thread=1 sequence=2340
...............

原因是在11g中存在bug，RMAN查看的是v$database中的MIN_REQUIRED_CAPTURE_CHANGE#，而不是DBA_CAPTURE。
默认情况下，该值每6小时更新一次。因此，在默认情况下，v$database中的值将比当前值晚6个小时。

解决方法是需要在delete 后面加上force。
delete noprompt force archivelog until time 'sysdate-7';