Oracle RMAN完全恢复案例（一）

案例1：数据库大部分datafile丢失（recover database，必须在mount下）

1）测试环境

07:21:12 SQL> conn scott/tiger

Connected.

07:21:16 SQL>

07:21:16 SQL> select * from tab;

TNAME TABTYPE CLUSTERID

------------------------------ ------- ----------

DEPT TABLE

EMP TABLE

BONUS TABLE

SALGRADE TABLE

SYS_TEMP_FBT TABLE

TEST TABLE

EMP1 TABLE

7 rows selected.

07:21:20 SQL> select * from test;

EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO

---------- ---------- --------- ---------- --------- ---------- ---------- ----------

7369 SMITH CLERK 7902 17-DEC-80 800 20

7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30

7369 SMITH CLERK 7902 17-DEC-80 800 20

7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30

7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30

7566 JONES MANAGER 7839 02-APR-81 2975 20

7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30

7698 BLAKE MANAGER 7839 01-MAY-81 2850 30

7782 CLARK MANAGER 7839 09-JUN-81 2450 10

7788 SCOTT ANALYST 7566 19-APR-87 3000 20

7839 KING PRESIDENT 17-NOV-81 5000 10

7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30

7876 ADAMS CLERK 7788 23-MAY-87 1100 20

7900 JAMES CLERK 7698 03-DEC-81 950 30

7902 FORD ANALYST 7566 03-DEC-81 3000 20

7934 MILLER CLERK 7782 23-JAN-82 1300 10

16 rows selected.

07:21:27 SQL> insert into test select * from test;

16 rows created.

07:21:43 SQL> commit;

Commit complete.

07:21:45 SQL> select count(*) from test;

COUNT(*)

----------

32

07:21:50 SQL> conn /as sysdba

Connected.

07:21:56 SQL>

07:22:03 SQL> select * from v$log;

GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIM

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------

1 1 8 52428800 1 NO CURRENT 1321561 18-AUG-11

2 1 7 52428800 1 YES INACTIVE 1321559 18-AUG-11

3 1 6 52428800 1 YES INACTIVE 1316062 18-AUG-11

07:22:09 SQL> alter system switch logfile;

System altered.

07:22:15 SQL>

07:22:15 SQL> shutdown abort

ORACLE instance shut down.

07:23:03 SQL> !

[oracle@work ~]$ rm /u01/app/oracle/oradata/prod/*.dbf

2)启动database

[oracle@work ~]$ !sql

sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Thu Aug 18 07:23:17 2011

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to an idle instance.

07:23:17 SQL>

07:23:17 SQL> startup

ORACLE instance started.

Total System Global Area 314572800 bytes

Fixed Size 1219184 bytes

Variable Size 79693200 bytes

Database Buffers 230686720 bytes

Redo Buffers 2973696 bytes

Database mounted.

ORA-01157: cannot identify/lock data file 1 - see DBWR trace file

ORA-01110: data file 1: '/u01/app/oracle/oradata/prod/system01.dbf'

07:23:25 SQL> select file#,error from v$recover_file;

FILE# ERROR

---------- -----------------------------------------------------------------

1 FILE NOT FOUND

2 FILE NOT FOUND

3 FILE NOT FOUND

4 FILE NOT FOUND

5 FILE NOT FOUND

6 FILE NOT FOUND

7 FILE NOT FOUND

8 FILE NOT FOUND

9 FILE NOT FOUND

9 rows selected.

07:23:38 SQL>

3）利用rman 恢复database

[oracle@work ~]$ rman target /

Recovery Manager: Release 10.2.0.1.0 - Production on Thu Aug 18 07:24:09 2011

Copyright (c) 1982, 2005, Oracle. All rights reserved.

connected to target database: PROD (DBID=170319990, not open)

RMAN> run {

2> startup force mount;

3> allocate channel c1 type disk;

4> allocate channel c2 type disk;

5> restore database;

6> recover database;

7> alter database open;

8> }

Oracle instance started

database mounted

Total System Global Area 314572800 bytes

Fixed Size 1219184 bytes

Variable Size 79693200 bytes

Database Buffers 230686720 bytes

Redo Buffers 2973696 bytes

using target database control file instead of recovery catalog

allocated channel: c1

channel c1: sid=157 devtype=DISK

allocated channel: c2

channel c2: sid=154 devtype=DISK

Starting restore at 18-AUG-11

channel c1: starting datafile backupset restore

channel c1: specifying datafile(s) to restore from backup set

restoring datafile 00001 to /u01/app/oracle/oradata/prod/system01.dbf

restoring datafile 00002 to /u01/app/oracle/oradata/prod/users01.dbf

restoring datafile 00003 to /u01/app/oracle/oradata/prod/sysaux01.dbf

restoring datafile 00004 to /u01/app/oracle/oradata/prod/index01.dbf

restoring datafile 00005 to /u01/app/oracle/oradata/prod/example01.dbf

restoring datafile 00006 to /u01/app/oracle/oradata/prod/test01.dbf

restoring datafile 00007 to /u01/app/oracle/oradata/prod/undo_tbs01.dbf

restoring datafile 00008 to /u01/app/oracle/oradata/prod/test02.dbf

restoring datafile 00009 to /u01/app/oracle/oradata/prod/cuug01.dbf

channel c1: reading from backup piece /disk1/rman/prod/PROD_31.bak

channel c1: restored backup piece 1

piece handle=/disk1/rman/prod/PROD_31.bak tag=TAG20110818T071905

channel c1: restore complete, elapsed time: 00:00:57

Finished restore at 18-AUG-11

Starting recover at 18-AUG-11

starting media recovery

media recovery complete, elapsed time: 00:00:03

Finished recover at 18-AUG-11

database opened

released channel: c1

released channel: c2

RMAN>

告警日志信息：

Full restore complete of datafile 6 /u01/app/oracle/oradata/prod/test01.dbf. Elapsed time: 0:00:01

checkpoint is 1321672

Full restore complete of datafile 8 /u01/app/oracle/oradata/prod/test02.dbf. Elapsed time: 0:00:02

checkpoint is 1321672

Full restore complete of datafile 9 /u01/app/oracle/oradata/prod/cuug01.dbf. Elapsed time: 0:00:01

checkpoint is 1321672

Thu Aug 18 07:25:40 2011

Full restore complete of datafile 2 /u01/app/oracle/oradata/prod/users01.dbf. Elapsed time: 0:00:16

checkpoint is 1321672

Full restore complete of datafile 4 /u01/app/oracle/oradata/prod/index01.dbf. Elapsed time: 0:00:18

checkpoint is 1321672

Full restore complete of datafile 5 /u01/app/oracle/oradata/prod/example01.dbf. Elapsed time: 0:00:20

checkpoint is 1321672

Full restore complete of datafile 7 /u01/app/oracle/oradata/prod/undo_tbs01.dbf. Elapsed time: 0:00:21

checkpoint is 1321672

Thu Aug 18 07:26:00 2011

Full restore complete of datafile 3 /u01/app/oracle/oradata/prod/sysaux01.dbf. Elapsed time: 0:00:35

checkpoint is 1321672

Thu Aug 18 07:26:12 2011

Full restore complete of datafile 1 /u01/app/oracle/oradata/prod/system01.dbf. Elapsed time: 0:00:47

checkpoint is 1321672

Thu Aug 18 07:26:20 2011

alter database recover datafile list clear

Thu Aug 18 07:26:20 2011

Completed: alter database recover datafile list clear

Thu Aug 18 07:26:21 2011

alter database recover datafile list

1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9

Completed: alter database recover datafile list

1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9

Thu Aug 18 07:26:21 2011

alter database recover if needed

start

Media Recovery Start

Thu Aug 18 07:26:21 2011

Recovery of Online Redo Log: Thread 1 Group 1 Seq 8 Reading mem 0

Mem# 0 errs 0: /u01/app/oracle/oradata/prod/redo01.log

Thu Aug 18 07:26:22 2011

Recovery of Online Redo Log: Thread 1 Group 3 Seq 9 Reading mem 0

Mem# 0 errs 0: /u01/app/oracle/oradata/prod/redo03.log

Thu Aug 18 07:26:22 2011

Media Recovery Complete (prod)

4）验证：

07:28:10 SQL> select count(*) from scott.test;

COUNT(*)

----------

32

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