關於oracle rman 歸檔刪除策略，oraclerman

關於oracle rman 歸檔刪除策略，oraclerman
RMAN> show all;

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE;

在oracle10g 11g 中  歸檔刪除策略 預設是沒有配置的；

那麼這時去刪除未應用過的的歸檔日誌會是怎麼一種情況：

RMAN> delete archivelog all;

released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=60 device type=DISK
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process

archived log file name=/u01/app/ora11/flash_recovery_area/1_2019_822927217.dbf thread=1 sequence=2019
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process

archived log file name=/u01/app/ora11/flash_recovery_area/1_2023_822927217.dbf thread=1 sequence=2023
RMAN-08137: WARNING: archived log not deleted, needed for standby or upstream capture process

oracle 拋出警示；warning 歸檔日誌沒有刪除，歸檔日誌需要用作standby 或者 stream 捕獲進程使用

關於rman中這個配置策略：

CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON STANDBY

不是自動刪除歸檔。而是刪除的時候確認歸檔已經被DATA GUARD、流環境所應用。這個功能的目的是避免刪除其他功能所需要的歸檔日誌。

如果配置歸檔刪除策略：

CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON STANDBY;
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/11.2.0/db_home/dbs/snapcf_oradb1.f'; # default

嘗試刪除歸檔日誌：
RMAN>  delete archivelog all;


released channel: ORA_DISK_1
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=27 instance=oradb1 device type=DISK
List of Archived Log Copies for database with db_unique_name ORADB
=====================================================================

Key     Thrd Seq     S Low Time            
------- ---- ------- - --------------------
2526    2    350     A 22-NOV-2014 02:01:04
        Name: +FLASH/oradb/archivelog/2014_11_24/thread_2_seq_350.600.864470143
2527    2    351     A 23-NOV-2014 13:01:27
        Name: +FLASH/oradb/archivelog/2014_11_24/thread_2_seq_351.620.864470173
2531    2    352     A 24-NOV-2014 10:29:04
        Name: +FLASH/oradb/archivelog/2014_11_26/thread_2_seq_352.554.864634011




Do you really want to delete the above objects (enter YES or NO)? yes
deleted archived log
archived log file name=+FLASH/oradb/archivelog/2014_11_24/thread_2_seq_350.600.864470143 RECID=2526 STAMP=864470171
deleted archived log
archived log file name=+FLASH/oradb/archivelog/2014_11_24/thread_2_seq_351.620.864470173 RECID=2527 STAMP=864470193
deleted archived log
archived log file name=+FLASH/oradb/archivelog/2014_11_26/thread_2_seq_352.554.864634011 RECID=2531 STAMP=864634090
Deleted 3 objects


RMAN-08591: WARNING: invalid archived log deletion policy

[oracle@vmrac1 ~]$ oerr rman 8591
8591, 3, "WARNING: invalid archived log deletion policy"
// *Cause: An invalid ARCHIVELOG DELETION POLICY was supplied. The archived
//         log deletion policy was APPLIED but there was no mandatory
//         archived log destinations.
// *Action: One of the following:
//          1) Change archived log deletion policy using CONFIGURE command
//          2) Make one or more of standby destination as MANDATORY.