DG環境RMAN刪除歸檔報錯RMAN-08137: archived log not deleted

Oracle 12C DG環境，備庫歸檔目錄告警，查看crontab腳本，發現有刪除操作，保持兩天的，后手動執行，查看具體報錯原因；

RMAN> delete noprompt expired archivelog all;

released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=5408 device type=DISK
specification does not match any archived log in the repository

RMAN> delete noprompt archivelog until time 'sysdate-2';

released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=5408 device type=DISK
RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process
archived log file name=/u01/arch/fcdstdydb1_948_973216253.dbf thread=1 sequence=948
RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process
archived log file name=/u01/arch/fcdstdydb1_949_973216253.dbf thread=1 sequence=949
RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process
archived log file name=/u01/arch/fcdstdydb1_950_973216253.dbf thread=1 sequence=950
RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process
archived log file name=/u01/arch/fcdstdydb1_951_973216253.dbf thread=1 sequence=951
RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process
archived log file name=/u01/arch/fcdstdydb1_952_973216253.dbf thread=1 sequence=952
RMAN-08137: warning: archived log not deleted, needed for standby or upstream capture process

---解決---

RMAN> delete noprompt force archivelog all completed before 'sysdate-2';

released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=5408 device type=DISK
List of Archived Log Copies for database with db_unique_name FCDSTDYDB

Key Thrd Seq S Low Time

935 1 948 A 2018:06:05 02:23:34
Name: /u01/arch/fcdstdydb1_948_973216253.dbf

936 1 949 A 2018:06:05 02:28:52
Name: /u01/arch/fcdstdydb1_949_973216253.dbf

937 1 950 A 2018:06:05 02:32:32

---說明---

此為11g的bug，需要在delete后加上force關鍵字，metalink上有記載
RMAN-08137 When deleting archivelogs even when Streams CAPTURE does not require them [ID 1079953.1]

In this Document
??Symptoms
??Changes
??Cause
??Solution
??References

Symptoms
Applies To:?11gR1-11gR2

RMAN is unable to delete archive logs from database even though they are not needed by CAPTURE process anymore.

Changes
?

Cause
In 11g, RMAN looks at MIN_REQUIRED_CAPTURE_CHANGE# in v$database and not at DBA_CAPTURE. By default this value is updated every 6 hours. So by default the value in v$database will be six hours behind the current value.

Solution
Since changing frequency of update to MIN_REQUIRED_CAPTURE_CHANGE# in v$database can not be controlled, following workaround can be used:

Archive log which are not needed by capture process can be deleted using:

delete noprompt force archivelog all completed before 'sysdate-10/1440';

PS：我們的環境是12C DG，該BUG在11g中有明確標識，12C就此MARK一下；