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9. Database Backup and Availability
9.1 Backup the database to prepare for complete recovery under all circumstances.
9.2 Open the database.
- 9.1 Backup the database to prepare for complete recovery under all circumstances.
没有说明如何备份数据库。建议冷备份和热备份一起。
1.创建备份的目录
[oracle@ocm1 ~]$ cd $ORACLE_BASE/oradata/PROD/Disk5
[oracle@ocm1 Disk5]$ ll
total 0
[oracle@ocm1 Disk5]$ mkdir bak
[oracle@ocm1 Disk5]$ ll
total 4
drwxr-xr-x 2 oracle oinstall 4096 Mar 19 15:02 bak
[oracle@ocm1 Disk5]$ cd bak
[oracle@ocm1 bak]$ pwd
/u01/app/oracle/oradata/PROD/Disk5/bak
2.将数据库改变为归档模式
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.
Total System Global Area 524288000 bytes
Fixed Size 1220360 bytes
Variable Size 163578104 bytes
Database Buffers 356515840 bytes
Redo Buffers 2973696 bytes
Database mounted.
SQL> alter database archivelog;
Database altered.
3.rman备份
[oracle@ocm1 ~]$ rman target /
Recovery Manager: Release 10.2.0.1.0 - Production on Wed Mar 19 15:08:31 2014
Copyright (c) 1982, 2005, Oracle. All rights reserved.
connected to target database: PROD (DBID=254361867, not open)
RMAN> backup as compressed backupset database format '/u01/app/oracle/oradata/PROD/Disk5/bak/PROD_%U.bak';
Starting backup at 19-MAR-14
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=285 devtype=DISK
channel ORA_DISK_1: starting compressed full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00004 name=/u01/app/oracle/oradata/PROD/Disk1/example01.dbf
input datafile fno=00001 name=/u01/app/oracle/oradata/PROD/Disk1/system01.dbf
input datafile fno=00003 name=/u01/app/oracle/oradata/PROD/Disk1/sysaux01.dbf
input datafile fno=00002 name=/u01/app/oracle/oradata/PROD/Disk1/undotbs01.dbf
input datafile fno=00007 name=/u01/app/oracle/oradata/PROD/Disk1/users01.dbf
input datafile fno=00008 name=/u01/app/oracle/oradata/PROD/Disk1/oltp01.dbf
input datafile fno=00005 name=/u01/app/oracle/oradata/PROD/Disk1/indx01.dbf
input datafile fno=00006 name=/u01/app/oracle/oradata/PROD/Disk1/tools01.dbf
channel ORA_DISK_1: starting piece 1 at 19-MAR-14
channel ORA_DISK_1: finished piece 1 at 19-MAR-14
piece handle=/u01/app/oracle/oradata/PROD/Disk5/bak/PROD_01p3iuaf_1_1.bak tag=TAG20140319T151005 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:02:07
channel ORA_DISK_1: starting compressed full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
including current control file in backupset
including current SPFILE in backupset
channel ORA_DISK_1: starting piece 1 at 19-MAR-14
channel ORA_DISK_1: finished piece 1 at 19-MAR-14
piece handle=/u01/app/oracle/oradata/PROD/Disk5/bak/PROD_02p3iuee_1_1.bak tag=TAG20140319T151005 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03
Finished backup at 19-MAR-14
RMAN>
- 9.2 Open the database.
RMAN> alter database open;
database opened
SQL> select open_mode from v$database;
OPEN_MODE
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READ WRITE
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