【Vegas改编】RMAN Catalog建立、备份及还原实施-优快云博客

本文介绍Oracle RMAN工具的基本使用流程，包括创建恢复目录、注册数据库、增量级别备份与恢复、脚本创建及执行等关键步骤，并提供实例说明如何进行完整的数据库备份和恢复操作。

-- Target DB ORACLE_SID=oralin CATALOG DB ORACLE_SID=oratest

******************************************************************

1. Create catalog DB and register database.
1.1. Connect to the catalog database and Create tablespace for the catalog:

SQL> create tablespace RMAN_ORALIN datafile '/u01/app/oracle/oradata/oratest/RMAN_ORALIN.dbf' size 50M;

1.2. Create Recovery Manager User:

SQL> CREATE USER rmanoralin PROFILE DEFAULT IDENTIFIED BY rmanoralin DEFAULT TABLESPACE RMAN_ORALIN TEMPORARY TABLESPACE TEMP quota unlimited on RMAN_ORALIN;

    1.3. Grant the role and privilege to this user to maintain the recovery catalog and perform the backup and recovery operations.

SQL> GRANT RECOVERY_CATALOG_OWNER TO rmanoralin;
SQL> GRANT CONNECT,RESOURCE TO rmanoralin;

1.4. Create catalog.

$ rman catalog rmanoralin/rmanoralin msglog=rmanoralin.log
RMAN> create catalog tablespace RMAN_ORALIN;
RMAN> exit;

    1.5. Check rmanoralin.log

    1.6. Log in as a user with SYSDBA priviledge on the target database tp perform all the backup and recovery operations.

$ rman target / catalog rmanoralin/rmanoralin@oratest

Recovery Manager: Release 10.1.0.2.0 - Production

connected to target database: ORALIN (DBID=34306947)
connected to recovery catalog database

1.7. Register target database in the catalog.

RMAN> register database;

database registered in recovery catalog
starting full resync of recovery catalog
full resync complete

*******************************************************
2. Backup databse using RMAN catalog and incremetallevel 0;

run {
         allocate channel d1 type disk;
         backup incremental level=0  filesperset 3 format '/u01/app/oracle/oradata/oralin/backup/%d.s%s.t%t.L0'
         ( database include current controlfile);
          sql 'alter system archive log current';
          sql 'alter system archive log current';
          sql 'alter system archive log current';
          backup filesperset 3 format '/u01/app/oracle/oradata/oralin/backup/ARCH.%d.s%s.t%t'
          (archivelog all delete input);
         }

*******************************************************************************************

3. Backup database using RMAN catalog and incremetallevel 1;

    resync catalog;
    run {
         allocate channel d1 type disk;
         backup incremental level=1  filesperset 3 format '/u01/app/oracle/oradata/oralin/backup/%d.s%s.t%t.L1'
         ( database include current controlfile);
          sql 'alter system archive log current';
          sql 'alter system archive log current';
          sql 'alter system archive log current';
          backup filesperset 3 format '/u01/app/oracle/oradata/oralin/backup/ARCH.%d.s%s.t%t'
          (archivelog all delete input);
         }

    *******************************************************************************************

4. Create script and stroe in catalog db , and use store scripts to backup.
    4.1. Create script example:

RMAN > create script level0backup {
                 allocate channel d1 type disk;
           backup incremental level=0  filesperset 3 format '/u01/app/oracle/oradata/oralin/backup/%d.s%s.t%t.L0'
           ( database include current controlfile);
           sql 'alter system archive log current';
           sql 'alter system archive log current';
           sql 'alter system archive log current';
           backup filesperset 3 format '/u01/app/oracle/oradata/oralin/backup/ARCH.%d.s%s.t%t'
           (archivelog all delete input);
                }

4.2. Execute script example:

RMAN> run { execute script level0backup;};

    *******************************************************************************************

5. Restore all datafile include control file and imcomplete recovery database.
5.1 Connect target and catalog DB.

$ rman target / catalog rmanoralin/rmanoralin@oratest

5.2 Startup nomount target DB.

RMAN> startup nomount;

5.3 restore target DB's control files.

RMAN> restore controlfile;

5.4 Startup mount Target DB

RMAN> sql 'alter database mount';

5.5. Restore target data files and auto-recovery database.

RMAN> restore database;
RMAN> recover database;
RMAN> exit

5.6 Incomplete recovery and open database resset logs.

$ sqlplus / as sysdba
SQL> recover database using backup controlfile until cancel;
SQL> alter database open resetlogs;

5.7. If using a recovery catalog , register the new incarnation of the database:

RMAN> reset database;

   *******************************************************************************************

6. Restore a database to a previous incarnation.
   6.1 List the incarnation of database:

RMAN> list incarnation of database;

6.2 Start the instance in the NOMOUNT state:

RMAN> startup nomount;

6.3 Reset the database to the previous incarnation.

RMAN> reset database to incarnation 2;

6.4 Restore the control file from the previous incarnation.

RMAN> restore controlfile;

6.5 Mount the database.

RMAN> sql 'alter database mount';

6.6 Restore the database.

RMAN> restore database;

6.7 Recover the database.