2、然后使用dbms_backup_restore来进行恢复
dbms_backup_restore是一个非常强大的package，可以在数据库nomount下使用，用于从备份集中读取各类文件。
本例使用如下脚本:
DECLARE
devtype varchar2(256);
done boolean;
BEGIN
devtype:=sys.dbms_backup_restore.deviceAllocate (type=>'',ident=>'t1');
sys.dbms_backup_restore.restoreSetDatafile;
sys.dbms_backup_restore.restoreDatafileTo(dfnumber=>01,toname=>'/opt/oracle/oradata/conner/system01.dbf');
sys.dbms_backup_restore.restoreDatafileTo(dfnumber=>02,toname=>'/opt/oracle/oradata/conner/undotbs01.dbf');
sys.dbms_backup_restore.restoreDatafileTo(dfnumber=>03,toname=>'/opt/oracle/oradata/conner/users01.dbf');
sys.dbms_backup_restore.restoreBackupPiece(done=>done,handle=>'/opt/oracle/product/9.2.0/dbs/0ggmiabq_1_1', params=>null);
sys.dbms_backup_restore.deviceDeallocate;
END;
/
3、执行恢复的过程
[oracle@jumper conner]$ sqlplus "/ as sysdba"
SQL*Plus: Release 9.2.0.4.0 - Production on Sat Jun 11 01:24:34 2005
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to an idle instance.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 101782828 bytes
Fixed Size 451884 bytes
Variable Size 37748736 bytes
Database Buffers 62914560 bytes
Redo Buffers 667648 bytes
SQL> DECLARE
2 devtype varchar2(256);
3 done boolean;
4 BEGIN
5 devtype:=sys.dbms_backup_restore.deviceAllocate (type=>'',ident=>'t1');
6 sys.dbms_backup_restore.restoreSetDatafile;
7 sys.dbms_backup_restore.restoreDatafileTo(dfnumber=>01,toname=>'/opt/oracle/oradata/conner/system01.dbf');
8 sys.dbms_backup_restore.restoreDatafileTo(dfnumber=>02,toname=>'/opt/oracle/oradata/conner/undotbs01.dbf');
9 sys.dbms_backup_restore.restoreDatafileTo(dfnumber=>03,toname=>'/opt/oracle/oradata/conner/users01.dbf');
10 sys.dbms_backup_restore.restoreBackupPiece(done=>done,handle=>'/opt/oracle/product/9.2.0/dbs/0ggmiabq_1_1',
params=>null);
11 sys.dbms_backup_restore.deviceDeallocate;
12 END;
13 /
PL/SQL procedure successfully completed.
SQL>
注释：从备份集中读取文件完成。
4、恢复控制文件
如果由于疏忽没有备份控制文件，你可以选择重建控制文件。
SQL> alter database mount;
Database altered.
SQL> alter database backup controlfile to trace;
Database altered.
然后找到trace文件，编辑并且执行重建控制文件需要部分:
[oracle@jumper oracle]$ sqlplus "/ as sysdba"
SQL*Plus: Release 9.2.0.4.0 - Production on Sat Jun 11 01:30:50 2005
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning option
JServer Release 9.2.0.4.0 - Production
SQL> shutdown immediate;
ORA-01109: database not open
Database dismounted.
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.
Total System Global Area 101782828 bytes
Fixed Size 451884 bytes
Variable Size 37748736 bytes
Database Buffers 62914560 bytes
Redo Buffers 667648 bytes
SQL> set echo on
SQL> @ctl
SQL>
SQL> CREATE CONTROLFILE REUSE DATABASE "CONNER" RESETLOGS ARCHIVELOG
2 -- SET STANDBY TO MAXIMIZE PERFORMANCE
3 MAXLOGFILES 5
4 MAXLOGMEMBERS 3
5 MAXDATAFILES 100
6 MAXINSTANCES 1
7 MAXLOGHISTORY 1361
8 LOGFILE
9 GROUP 1 '/opt/oracle/oradata/conner/redo01.log' SIZE 10M,
10 GROUP 2 '/opt/oracle/oradata/conner/redo02.log' SIZE 10M,
11 GROUP 3 '/opt/oracle/oradata/conner/redo03.log' SIZE 10M
12 -- STANDBY LOGFILE
13 DATAFILE
14 '/opt/oracle/oradata/conner/system01.dbf',
15 '/opt/oracle/oradata/conner/undotbs01.dbf',
16 '/opt/oracle/oradata/conner/users01.dbf'
17 CHARACTER SET ZHS16GBK
18 ;
Control file created.
