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oracle 10gR2 RAC+ASM恢复到单实例

来源: RuleV5 分享至:

RAC asm恢复到单实例

rac源服务器:

rac1:192.168.100.201

rac2:192.168.100.202

目标服务器:

192.168.8.201

 

恢复的主要步骤如下:

恢复初始化参数文件->修改参数文件->恢复控制文件->resotre数据文件->recover数据文件

 

1、正确安装单实例数据库

1)查看rac文件环境变量

[oracle@linuxso.com ~]$ rman target /

 

Recovery Manager: Release 10.2.0.4.0 -Production on Tue Nov 22 21:45:18 2011

 

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

 

connected to target database (not started)

 

RMAN> startup nomount;

 

startup failed: ORA-01078: failure inprocessing system parameters

LRM-00109: could not open parameter file'/oracle/ora10g/product/db/dbs/initjscnora'

 

starting Oracle instance without parameterfile for retrival of spfile

Oracle instance started

 

Total System Global Area     159383552 bytes

 

Fixed Size                     2082400 bytes

Variable Size                 67111328 bytes

Database Buffers              83886080 bytes

Redo Buffers                   6303744 bytes

 

2)从备份集中恢复spfile,并保存成pfile,操作如下

把最近的0级备份和后面的备份文件拷贝到

我们看到备份集有如下

-rw-r----- 1 oracle oinstall    622592 Dec 2 16:11 arch_JSCN_20111202_286

-rw-r----- 1 oracle oinstall    266752 Dec 2 16:11 arch_JSCN_20111202_287

-rw-r----- 1 oracle oinstall    140288 Dec 2 16:13 arch_JSCN_20111202_296

-rw-r----- 1 oracle oinstall     36352 Dec 2 16:13 arch_JSCN_20111202_297

-rw-r----- 1 oracle oinstall  16908288 Dec 2 16:13 control_c-2437751542-20111202-00

-rw-r----- 1 oracle oinstall    196608 Dec 2 16:11 lev0_JSCN_20111202_288

-rw-r----- 1 oracle oinstall  32784384 Dec 2 16:11 lev0_JSCN_20111202_289

-rw-r----- 1 oracle oinstall    172032 Dec 2 16:11 lev0_JSCN_20111202_290

-rw-r----- 1 oracle oinstall 388726784Dec  2 16:12 lev0_JSCN_20111202_291

-rw-r----- 1 oracle oinstall 256327680Dec  2 16:13 lev0_JSCN_20111202_292

-rw-r----- 1 oracle oinstall   9658368 Dec 2 16:13 lev0_JSCN_20111202_293

-rw-r----- 1 oracle oinstall  15204352 Dec 2 16:13 lev0_JSCN_20111202_294

-rw-r----- 1 oracle oinstall   1818624 Dec 2 16:13 lev0_JSCN_20111202_295

这几个都是最近的备份,control_c-2437751542-20111202-00一个包含初始化参数文件

 

让我们恢复参数文件

[oracle@linuxso.com ~]$ rman target /

 

Recovery Manager: Release 10.2.0.4.0 -Production on Tue Nov 22 22:07:18 2011

 

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

 

connected to target database: DUMMY (notmounted)

 

RMAN> restore spfile to pfile'/home/oracle/initjscn.ora' from '/orabak/lev2_JSCN_20111201_182';

 

Starting restore at 22-NOV-11

using target database control file insteadof recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=39 devtype=DISK

 

channel ORA_DISK_1: autobackup found:/orabak/lev2_JSCN_20111201_182

channel ORA_DISK_1: SPFILE restore fromautobackup complete

Finished restore at 22-NOV-11

 

--查看/home/oracle/initjscn.ora

接下来要做的是个体力活,修改 pfile.ora中的初始化参数,主要有两方面的修改

a 修改含文件路径的参数,达到符合当前服务器环境的实际情况

b 修改多实例相关的参数

c 内存参数(如果源服务器和目录服务器内存一样大,不用调)

原文件内容如下:

 

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

jscn2.__db_cache_size=1207959552

jscn1.__db_cache_size=1207959552

jscn2.__java_pool_size=16777216

jscn1.__java_pool_size=16777216

jscn2.__large_pool_size=16777216

jscn1.__large_pool_size=16777216

jscn2.__shared_pool_size=352321536

jscn1.__shared_pool_size=352321536

jscn2.__streams_pool_size=0

jscn1.__streams_pool_size=0

*.audit_file_dest='/oracle/ora10g/admin/jscn/adump'

*.background_dump_dest='/oracle/ora10g/admin/jscn/bdump'

*.cluster_database_instances=2

*.cluster_database=true

*.compatible='10.2.0.3.0'

*.control_files='+DATA/jscn/controlfile/current.263.768517111'

*.core_dump_dest='/oracle/ora10g/admin/jscn/cdump'

*.db_block_size=8192

*.db_create_file_dest='+DATA'

*.db_domain=''

*.db_file_multiblock_read_count=8

*.db_name='jscn'

*.dispatchers='(PROTOCOL=TCP)(SERVICE=jscnXDB)'

jscn1.instance_number=1

jscn2.instance_number=2

*.job_queue_processes=10

jscn1.log_archive_dest_1='location=/oraarch1/'

jscn2.log_archive_dest_1='location=/oraarch2/'

jscn1.log_archive_dest_2='service=jscn2'

jscn2.log_archive_dest_2='service=jscn1'

*.open_cursors=300

*.pga_aggregate_target=2512388096

*.processes=1500

*.remote_listener='LISTENERS_JSCN'

*.remote_login_passwordfile='exclusive'

*.sessions=1655

*.sga_target=1610612736

jscn1.standby_archive_dest='/oraarch2/'

jscn2.standby_archive_dest='/oraarch1'

jscn2.thread=2

jscn1.thread=1

*.undo_management='AUTO'

jscn1.undo_tablespace='UNDOTBS1'

jscn2.undo_tablespace='UNDOTBS2'

*.user_dump_dest='/oracle/ora10g/admin/jscn/udump'

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

 

最终修改完之后,这里的初始化参数如下,比如原来的文件精简不少:

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

*.audit_file_dest='/oracle/ora10/admin/jscn/adump'

*.background_dump_dest='/oracle/ora10/admin/jscn/bdump'

*.compatible='10.2.0.3.0'

*.control_files='/oracle/ora10/oradata/jscn/control01.ctl','/oracle/ora10/oradata/jscn/control02.ctl','/oracle/ora10/oradata/jscn/control03.ctl'

*.core_dump_dest='/oracle/ora10/admin/jscn/cdump'

*.db_block_size=8192

*.db_domain=''

*.db_file_multiblock_read_count=8

*.db_name='jscn'

*.job_queue_processes=10

*.log_archive_dest_1='location=/oraarch'

*.open_cursors=300

*.pga_aggregate_target=251238809

*.processes=150

*.remote_login_passwordfile='exclusive'

*.sessions=165

*.sga_target=261061273

*.undo_management='AUTO'

undo_tablespace='UNDOTBS1'

*.user_dump_dest='/oracle/ora10/admin/jscn/udump'

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

创建相应的目录

[oracle@linuxso.com ~]$ mkdir -p/oracle/ora10/admin/jscn/adump

[oracle@linuxso.com ~]$ mkdir -p/oracle/ora10/admin/jscn/bdump

[oracle@linuxso.com ~]$ mkdir -p/oracle/ora10/admin/jscn/cdump

[oracle@linuxso.com ~]$ mkdir -p/oracle/ora10/admin/jscn/udump

[oracle@linuxso.com ~]$ mkdir -p /oracle/ora10/oradata/jscn/

现在我们开始恢复了

SQL> create spfile from pfile='/home/oracle/initjscn.ora';

 

File created.

SQL> shutdown immediate

SQL> startup nomount

 

ORACLE instance shut down.

SQL> startup nomount

ORA-07446: sdnfy: bad value'/oracle/ora10g/admin/jscn/udump' for parameter user_dump_dest.

SQL> startup nomount

ORACLE instance started.

ORA-04030: out of process memory whentrying to allocate 32 bytes (sqlarea,tmp)

 

如果碰到以上错误

--1、创建相应的目录

--2、修改pga_aggregate_target为合适的值

 

SQL> startup nomount

ORACLE instance started.

 

Total System Global Area  264241152 bytes

Fixed Size                  2083200 bytes

Variable Size              83887744 bytes

Database Buffers          171966464 bytes

Redo Buffers                6303744 bytes

 

3)恢复控制文件

控制文件我们默认是自动备份的,所以我们要选取最新的控制文件来恢复数据

-rw-r----- 1 oracle oinstall  16908288 Dec 2 16:13 control_c-2437751542-20111202-00

1 设置dbid

[oracle@linuxso.com ~]$ rman target /

 

Recovery Manager: Release 10.2.0.4.0 -Production on Tue Nov 22 23:55:44 2011

 

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

 

connected to target database: jscn (notmounted)

 

RMAN> set dbid= 2437751542

 

executing command: SET DBID

 

RMAN> restore controlfile from'/orabak/201112/01_L0/cro_c-2437751542-20111201-00';

Starting restore at 23-NOV-11

using target database control file insteadof recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=157 devtype=DISK

 

channel ORA_DISK_1: restoring control file

channel ORA_DISK_1: restore complete,elapsed time: 00:00:03

outputfilename=/oracle/ora10g/oradata/jscn/control01.ctl

outputfilename=/oracle/ora10g/oradata/jscn/control02.ctl

Finished restore at 23-NOV-11

 

RMAN> alter database mount;

 

database mounted

 

 

4)恢复数据文件

先查看源文件配置,这些内容存在在控制文件中

数据文件:

[oracle@linuxso.com ~]$ sqlplus / as sysdba

 

SQL*Plus: Release 10.2.0.4.0 - Productionon Wed Nov 23 09:43:49 2011

 

Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.


Connected to:

Oracle Database 10g Enterprise EditionRelease 10.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Miningand Real Application Testing options

 

SQL> conn jscn/jscn

Connected.

SQL> desc nihao;

 Name                                     Null?    Type

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

 ID                                                NUMBER

 



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