oracle 归档日志 策略,RMAN 配置归档日志删除策略

5、演示归档日志删除策略

[Oracle@linux1 ~]$ rman target /

Recovery Manager: Release 11.2.0.1.0 - Production on Tue Nov 12 15:10:17 2013

--查看当前数据库保留策略

RMAN> show retention policy;

RMAN configuration parameters for database with db_unique_name USBO are:

CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default

--查看当前数据库保归档日志留策略

RMAN> show archivelog deletion policy;

RMAN configuration parameters for database with db_unique_name USBO are:

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

--查看过时的备份

RMAN> report obsolete;

RMAN retention policy will be applied to the command

RMAN retention policy is set to redundancy 1

no obsolete backups found

--列出copy副本

RMAN> list copy;

specification does not match any datafile copy in the repository

specification does not match any control file copy in the repository

List of Archived Log Copies for database with db_unique_name USBO

=====================================================================

Key Thrd Seq S Low Time

-——— —— ———- - —————————-

124 1 121 A 2013/11/12 15:34:15

Name: /u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_121_983pm3gp_.arc —当前的归档日志

--修改当前的归档日志保留策略为2个备份副本

RMAN> configure archivelog deletion policy to backed up 2 times to device type disk;

new RMAN configuration parameters:

CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 2 TIMES TO DISK;

new RMAN configuration parameters are successfully stored

--备份归档日志，并删除已经备份的归档日志

RMAN> backup archivelog all delete input;

Starting backup at 2013/11/12 15:37:25

current log archived

using channel ORA_DISK_1

channel ORA_DISK_1: starting archived log backup set

channel ORA_DISK_1: specifying archived log(s) in backup set

input archived log thread=1 sequence=121 RECID=124 STAMP=831310563

input archived log thread=1 sequence=122 RECID=125 STAMP=831310645

channel ORA_DISK_1: starting piece 1 at 2013/11/12 15:37:26

channel ORA_DISK_1: finished piece 1 at 2013/11/12 15:37:27

piece handle=/u03/database/usbo/fr_area/USBO/backupset/2013_11_12/o1_mf_annnn_TAG20131112T153726_983pop3p_.bkp

tag=TAG20131112T153726 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

channel ORA_DISK_1: deleting archived log(s)

RMAN-08138: WARNING: archived log not deleted - must create more backups —->出现警告提示，日志当前不能被删除，更多的备份需要创建

archived log file name=/u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_121_983pm3gp_.arc thread=1 sequence=121

RMAN-08138: WARNING: archived log not deleted - must create more backups

archived log file name=/u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_122_983pooxb_.arc thread=1 sequence=122

Finished backup at 2013/11/12 15:37:27

--从os层面查看归档日志，当前已备份的两个归档日志没有删除

sys@USBO> ho ls -hltr /u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/*

-rw-r——- 1 oracle asmadmin 3.0K Nov 12 15:36 /u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_121_983pm3gp_.arc

-rw-r——- 1 oracle asmadmin 4.5K Nov 12 15:37 /u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_122_983pooxb_.arc

--从视图查询也可以获得其状态

sys@USBO> select name,status from v$archived_log where STATUS=’A’;

NAME STA

-———————————————————————————————————————- —-

/u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_121_983pm3gp_.arc A

/u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_122_983pooxb_.arc A

--第二次备份归档日志

-- Author : Leshami

-- Blog : http://www.linuxidc.com

RMAN> backup archivelog all delete input tag=arc_2nd;

Starting backup at 2013/11/12 15:41:58

current log archived

using channel ORA_DISK_1

channel ORA_DISK_1: starting archived log backup set

channel ORA_DISK_1: specifying archived log(s) in backup set

input archived log thread=1 sequence=121 RECID=124 STAMP=831310563 —sequence 121与122依旧被备份

input archived log thread=1 sequence=122 RECID=125 STAMP=831310645

input archived log thread=1 sequence=123 RECID=126 STAMP=831310918

channel ORA_DISK_1: starting piece 1 at 2013/11/12 15:41:58

channel ORA_DISK_1: finished piece 1 at 2013/11/12 15:41:59

piece handle=/u03/database/usbo/fr_area/USBO/backupset/2013_11_12/o1_mf_annnn_ARC_2ND_983py6mv_.bkp tag=ARC_2ND comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

channel ORA_DISK_1: deleting archived log(s) —sequence 121与122被删除

archived log file name=/u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_121_983pm3gp_.arc RECID=124 STAMP=831310563

archived log file name=/u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_122_983pooxb_.arc RECID=125 STAMP=831310645

RMAN-08138: WARNING: archived log not deleted - must create more backups —->出现警告提示，日志123不能被删除，更多的备份需要创建

archived log file name=/u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_123_983py6gh_.arc thread=1 sequence=123

--再次查看，只有sequence 123存在，121与122已经被删除

RMAN> list copy;

specification does not match any datafile copy in the repository

specification does not match any control file copy in the repository

List of Archived Log Copies for database with db_unique_name USBO

=====================================================================

Key Thrd Seq S Low Time

-——— —— ———- - —————————-

126 1 123 A 2013/11/12 15:37:25

Name: /u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_123_983py6gh_.arc

Finished backup at 2013/11/12 15:41:59

--配置新的归档日志删除策略

RMAN> configure archivelog deletion policy to backed up 1 times to device type disk;

old RMAN configuration parameters:

CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 2 TIMES TO DISK;

new RMAN configuration parameters:

CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DISK;

new RMAN configuration parameters are successfully stored

--第三次备份归档日志

RMAN> backup archivelog all tag=arc_3rd;

Starting backup at 2013/11/12 15:44:11

current log archived

using channel ORA_DISK_1 —下面是skip的提示信息，因为根据新的策略，sequence 123已经被备份过一次了

skipping archived log file /u03/database/usbo/fr_area/USBO/archivelog/2013_11_12/o1_mf_1_123_983py6gh_.arc; already backed up 1 time(s)

channel ORA_DISK_1: starting archived log backup set

channel ORA_DISK_1: specifying archived log(s) in backup set

input archived log thread=1 sequence=124 RECID=127 STAMP=831311051

channel ORA_DISK_1: starting piece 1 at 2013/11/12 15:44:12

channel ORA_DISK_1: finished piece 1 at 2013/11/12 15:44:13

piece handle=/u03/database/usbo/fr_area/USBO/backupset/2013_11_12/o1_mf_annnn_ARC_3RD_983q2d34_.bkp tag=ARC_3RD comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01

Finished backup at 2013/11/12 15:44:13

--清除策略

RMAN> configure archivelog deletion policy clear;

old RMAN configuration parameters:

CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DISK;

RMAN configuration parameters are successfully reset to default value

--列出所有归档日志的备份信息

RMAN> list backup of archivelog all;

List of Backup Sets

===================

BS Key Size Device Type Elapsed Time Completion Time

-——— ————— —————- —————— —————————-

24 8.00K DISK 00:00:00 2013/11/12 15:37:26

BP Key: 24 Status: AVAILABLE Compressed: NO Tag: TAG20131112T153726

Piece Name: /u03/database/usbo/fr_area/USBO/backupset/2013_11_12/o1_mf_annnn_TAG20131112T153726_983pop3p_.bkp

List of Archived Logs in backup set 24

Thrd Seq Low SCN Low Time Next SCN Next Time

-—- ———- ————— —————————- ————— ————-

1 121 3090437 2013/11/12 15:34:15 3090507 2013/11/12 15:36:03

1 122 3090507 2013/11/12 15:36:03 3090591 2013/11/12 15:37:25

BS Key Size Device Type Elapsed Time Completion Time

-——— ————— —————- —————— —————————-

25 37.50K DISK 00:00:00 2013/11/12 15:41:58

BP Key: 25 Status: AVAILABLE Compressed: NO Tag: ARC_2ND

Piece Name: /u03/database/usbo/fr_area/USBO/backupset/2013_11_12/o1_mf_annnn_ARC_2ND_983py6mv_.bkp

List of Archived Logs in backup set 25

Thrd Seq Low SCN Low Time Next SCN Next Time

-—- ———- ————— —————————- ————— ————-

1 121 3090437 2013/11/12 15:34:15 3090507 2013/11/12 15:36:03

1 122 3090507 2013/11/12 15:36:03 3090591 2013/11/12 15:37:25

1 123 3090591 2013/11/12 15:37:25 3090746 2013/11/12 15:41:58

BS Key Size Device Type Elapsed Time Completion Time

-——— ————— —————- —————— —————————-

26 2.50K DISK 00:00:00 2013/11/12 15:44:12

BP Key: 26 Status: AVAILABLE Compressed: NO Tag: ARC_3RD

Piece Name: /u03/database/usbo/fr_area/USBO/backupset/2013_11_12/o1_mf_annnn_ARC_3RD_983q2d34_.bkp

List of Archived Logs in backup set 26

Thrd Seq Low SCN Low Time Next SCN Next Time

-—- ———- ————— —————————- ————— ————-

1 124 3090746 2013/11/12 15:41:58 3090839 2013/11/12 15:44:11