Oracle10gR2RAC+ASM恢复到单实例-mysql教程

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

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@rac2 log]$ cat/etc/profile.d/oraenv.sh

# oracle 10g

export ORACLE_BASE=/oracle/ora10g

export ORACLE_HOME=$ORACLE_BASE/product/db

export CRS_HOME=$ORACLE_BASE/product/crs

exportPATH=$CRS_HOME/bin:$ORACLE_HOME/bin:$PATH

export ORACLE_OWNER=oracle

export ORACLE_SID=jscn2

exportLD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib

export NLS_LANG='american_america.ZHS16GBK'

#exportNLS_LANG='american_america.AL32UTF8'

umask 022

目标服务器ORACLE_SID不要设置

2）安装备份服务器

根据这个环境变量创建目标服务器数据库（包括，数据库的安装，升级包安装，数据库不要创建）

2、恢复阶段 1）启动目标数据库到nomount

[oracle@IM-8-201 ~]$ 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@IM-8-201 ~]$ 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@ora-bak-100-119 ~]$ mkdir -p/oracle/ora10/admin/jscn/adump

[oracle@ora-bak-100-119 ~]$ mkdir -p/oracle/ora10/admin/jscn/bdump

[oracle@ora-bak-100-119 ~]$ mkdir -p/oracle/ora10/admin/jscn/cdump

[oracle@ora-bak-100-119 ~]$ mkdir -p/oracle/ora10/admin/jscn/udump

[oracle@ora-bak-100-119 ~]$ 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