使用RMAN进行排除表空间备份

2023-11-30 18:30:28

在RMAN的备份中，可以通过Exclude命令排除某些不需要备份的表空间。

这样可以缩减备份的容量，对备份进行适当优化和调整。

排除某个表空间可以使用类似如下命令：

configure exclude for tablespace users;

其设置可以在RMAN中通过show exclude命令来查看。

如果将来想临时增加排除表空间的备份，可以通过以下命令实现：

backup database noexclude;

如果想取消排除设置则可以使用如下命令：

CONFIGURE EXCLUDE FOR TABLESPACE users CLEAR;

此外常用的排除备份命令还有：

BACKUP DATABASE SKIP READONLY, SKIP OFFLINE;

configure exclude for tablespace users;

configrue exclude clear; --清除设置

BACKUP DATABASE NOEXCLUDE; --会备份USERS表空间

此命令用于将指定的表空间不备份到备份集中。

RMAN> configure exclude for tablespace users;

using target database control file instead of recovery catalog

Tablespace USERS will be excluded from future whole database backups

new RMAN configuration parameters are successfully stored

RMAN> show all;

RMAN configuration parameters for database with db_unique_name OCPLHR1 are:

CONFIGURE RETENTION POLICY TO REDUNDANCY 3;

CONFIGURE BACKUP OPTIMIZATION ON;

CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default

CONFIGURE CONTROLFILE AUTOBACKUP ON;

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/bak/cf_%F.ctl';

CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET;

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1;

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE MAXSETSIZE TO UNLIMITED; # default

CONFIGURE ENCRYPTION FOR DATABASE OFF; # default

CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default

CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default

CONFIGURE EXCLUDE FOR TABLESPACE 'USERS';

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/11.2.0/dbhome_1/dbs/snapcf_OCPLHR1.f'; # default

RMAN> show exclude;

RMAN configuration parameters for database with db_unique_name OCPLHR1 are:

CONFIGURE EXCLUDE FOR TABLESPACE 'USERS';

RMAN>

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