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php爱好者> php文档>ASM下的数据文件转换为普通文件

ASM下的数据文件转换为普通文件

时间:2010-09-14  来源:sun5411

ASM下的数据文件转换为普通文件

2008-06-23 09:54作者:木头出处:天极网责任编辑:nancy

  发现很多文章都是介绍如何将普通文件装换为ASM下的数据文件的,介绍ASM下的文件转换为普通文件的较少。下面的实验就是介绍如何将ASM的文件转换为普通文件的,主要使用了RMAN和ASMCMD工具。

  注:此实验的为SYSAUX表空间。如果将整个数据库都从ASM中转移出来,其他表空间的操作类似,不过在线日志、Undo表空间、临时表空间重建即可,不需要转移出来。

  具体实验步骤

  1.使用RMAN将需要转换的文件+TEST/test/datafile/sysaux.257.650496219备份为F:\sysaux01.dbf

  C:\WINDOWS>rman target /

  Recovery Manager: Release 10.2.0.1.0 - Production on Fri Jun 20 23:32:26 2008

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

  connected to target database: T (DBID=544433466)

  RMAN> report schema;

  using target database control file instead of recovery catalog

  Report of database schema

  List of Permanent Datafiles

  ===========================

  File Size(MB) Tablespace RB segs Datafile Name

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

  1 540 SYSTEM *** +TEST/test/datafile/system.258.650496175

  2 140 UNDOTBS1 *** +TEST/test/datafile/undotbs1.259.650496245

  3 370 SYSAUX *** +TEST/test/datafile/sysaux.257.650496219

  4 5 USERS *** +TEST/test/datafile/users.260.650496247

  5 1 TEST_BIG *** +TEST/test/datafile/test_big.262.650496255

  6 10 SYSAUX *** F:\ORACLE\PRODUCT\ORADATA\TEST\SYSAUX02.DBF

  8 10 TEST *** F:\ORACLE\PRODUCT\ORADATA\TEST\TEST01.DBF

  9 10 TEST1 *** F:\ORACLE\PRODUCT\ORADATA\TEST\TEST02.DBF

  10 10 UNDO01 *** F:\ORACLE\PRODUCT\ORADATA\TEST\UNDO01.DBF

  11 10 UNDO02 *** F:\ORACLE\PRODUCT\ORADATA\TEST\UNDO02.DBF

  12 10 TEST03 *** F:\ORACLE\PRODUCT\ORADATA\TEST\TEST03.DBF

  List of Temporary Files

  =======================

  File Size(MB) Tablespace Maxsize(MB) Tempfile Name

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

  2 30 TEMP 30 +TEST/temp01.dbf

  RMAN> copy datafile 3 to 'F:\sysaux01.dbf';

  Starting backup at 20-JUN-08

  configuration for DISK channel 2 is ignored

  allocated channel: ORA_DISK_1

  channel ORA_DISK_1: sid=158 devtype=DISK

  channel ORA_DISK_1: starting datafile copy

  input datafile fno=00003 name=+TEST/test/datafile/sysaux.257.650496219

  output filename=D:\1.DBF tag=TAG20080620T233341 recid=13 stamp=657934458

  channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45

  Finished backup at 20-JUN-08

  2.由于操作的是SYSAUX表空间,恢复需要在mount下进行

  RMAN> shutdown immediate

  database closed

  database dismounted

  Oracle instance shut down

  RMAN> startup mount

  connected to target database (not started)

  Oracle instance started

  database mounted

  Total System Global Area 268435456 bytes

  Fixed Size 1248504 bytes

  Variable Size 138412808 bytes

  Database Buffers 121634816 bytes

  Redo Buffers 7139328 bytes

  3.使用ASMCMD删除ASM中已有的SYSAUX表空间的数据文件

  Microsoft Windows XP [版本 5.1.2600]

  (C) 版权所有 1985-2001 Microsoft Corp.

  C:\WINDOWS>set ORACLE_HOME=f:\oracle\product/10.2.0

  C:\WINDOWS>set ORACLE_SID=+asm

  C:\WINDOWS>asmcmd

  ASMCMD> ls

  TEST/

  ASMCMD> cd test

  ASMCMD> ls

  TEST/

  redo04.log

  redo05.log

  redo06.log

  temp01.dbf

  ASMCMD> cd test

  ASMCMD> ls

  BACKUPSET/

  CONTROLFILE/

  DATAFILE/

  ONLINELOG/

  TEMPFILE/

  control01.ctl

  control02.ctl

  ASMCMD> cd datafile

  ASMCMD> ls

  SYSAUX.257.650496219

  SYSTEM.258.650496175

  TEST_BIG.262.650496255

  UNDOTBS1.259.650496245

  USERS.260.650496247

  ASMCMD> rm SYSAUX.257.650496219

  ASMCMD> ls

  SYSTEM.258.650496175

  TEST_BIG.262.650496255

  UNDOTBS1.259.650496245

  USERS.260.650496247

  ASMCMD>

  4.修改备份的数据文件名(这步也可以不需要,在备份的时候直接备份到需要的位置即可)

  从F:\sysaux01.dbf移动至F:\ORACLE\PRODUCT\ORADATA\TEST\SYSAUX01.DB

  5.修改数据库的控制文件,将原来SYSAUX的数据文件由ASM下改名到备份的文件

  RMAN> run

  2> {set newname for datafile '+TEST/test/datafile/sysaux.257.650496219' to 'F:\oracle\product\oradata\test\sysaux01.dbf';

  3> switch datafile all;

  4> }

  由于移动了备份的文件的位置(从F:\sysaux01.dbf移动至F:\ORACLE\PRODUCT\ORADATA\TEST\SYSAUX01.DB),而新的文件没有catalog,所以报错了

  executing command: SET NEWNAME

  RMAN-00571: ===========================================================

  RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

  RMAN-00571: ===========================================================

  RMAN-03002: failure of switch command at 06/20/2008 23:41:02

  RMAN-20230: datafile copy not found in the recovery catalog

  RMAN-06015: error while looking up datafile copy name: F:\ORACLE\PRODUCT\ORADATA\TEST\SYSAUX01.DBF

  6.将移动后的备份数据文件catalog

  RMAN> catalog datafilecopy 'F:\ORACLE\PRODUCT\ORADATA\TEST\SYSAUX01.DBF';

  cataloged datafile copy

  datafile copy filename=F:\ORACLE\PRODUCT\ORADATA\TEST\SYSAUX01.DBF recid=14 stamp=657934913

  7.重新修改数据文件的位置

  RMAN> run

  2> {set newname for datafile '+TEST/test/datafile/sysaux.257.650496219' to 'F:\oracle\product\oradata\test\sysaux01.dbf';

  3> switch datafile all;

  4> }

  executing command: SET NEWNAME

  datafile 3 switched to datafile copy

  input datafile copy recid=14 stamp=657934913 filename=F:\ORACLE\PRODUCT\ORADATA\TEST\SYSAUX01.DBF

  8.恢复数据文件

  RMAN> recover datafile 3;

  Starting recover at 20-JUN-08

  configuration for DISK channel 2 is ignored

  allocated channel: ORA_DISK_1

  channel ORA_DISK_1: sid=152 devtype=DISK

  starting media recovery

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

  Finished recover at 20-JUN-08

  9.打开数据库,此时SYSAUX表空间的数据文件已经由ASM下转移为普通文件

  RMAN> sql 'alter database open';

  sql statement: alter database open

  RMAN>

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