oracle 10gR2 RAC+ASM恢复到单实例

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

 

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@IM-8-201 ~]$ 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@rac2 orabak]$ sqlplus / as sysdba

 

SQL> select file#,name from v$datafile;

 

    FILE# NAME

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

        1 +DATA/jscn/datafile/system.276.768517007

        2 +DATA/jscn/datafile/undotbs1.280.768517007

        3 +DATA/jscn/datafile/sysaux.277.768517007

        4 +DATA/jscn/datafile/users.281.768517009

        5 +DATA/jscn/datafile/undotbs2.265.768517163

        6 +DATA/jscn/datafile/jscn.279.768561585

        7 +DATA/jscn/datafile/jscndata.274.768561677

        8 +DATA/jscn/datafile/jscnindex.273.768561769

 

临时文件

 SQL> select file#,name from v$tempfile;

 

    FILE# NAME

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

        1 +DATA/jscn/tempfile/temp.266.768517129

 

日志文件：

SQL> select member from gv$logfile;

 

MEMBER

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

+DATA/jscn/onlinelog/group_1.278.768517115

+DATA/jscn/onlinelog/group_2.267.768517119

+DATA/jscn/onlinelog/group_3.262.768517183

+DATA/jscn/onlinelog/group_4.261.768517187

 

 

RMAN 中的 SET 命令可以用来为数据文件和临时文件重命名，这里就使用 set 命令对数据文件和临时文件的路径进行重定义，然后再执行恢复操作，如下：

RMAN>

RUN {

SET NEWNAME FOR DATAFILE 1 to '/oracle/ora10/oradata/jscn/system01.dbf';

SET NEWNAME FOR DATAFILE 2 to '/oracle/ora10/oradata/jscn/UNDOTBS1.dbf';

SET NEWNAME FOR DATAFILE 3 to '/oracle/ora10/oradata/jscn/sysaux01.dbf';

SET NEWNAME FOR DATAFILE 4 to '/oracle/ora10/oradata/jscn/users01.dbf';

SET NEWNAME FOR DATAFILE 5 to '/oracle/ora10/oradata/jscn/UNDOTBS2.dbf';

SET NEWNAME FOR DATAFILE 6 to '/oracle/ora10/oradata/jscn/jscn.dbf';

SET NEWNAME FOR DATAFILE 7 to '/oracle/ora10/oradata/jscn/jscndata.dbf';

SET NEWNAME FOR DATAFILE 8 to '/oracle/ora10/oradata/jscn/jscnindex.dbf';

SET NEWNAME FOR TEMPFILE 1 to '/oracle/ora10/oradata/jscn/temp01.dbf';

restore database;

switch datafile all;

}

2> 3> 4> 5> 6> 7> 8>9> 10> 11> 12> 13>

 

executing command: SET NEWNAME

 

executing command: SET NEWNAME

 

executing command: SET NEWNAME

 

executing command: SET NEWNAME

 

executing command: SET NEWNAME

 

executing command: SET NEWNAME

 

executing command: SET NEWNAME

 

executing command: SET NEWNAME

 

Starting restore at 23-NOV-11

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=156 devtype=DISK

 

channel ORA_DISK_1: starting datafilebackupset restore

channel ORA_DISK_1: specifying datafile(s)to restore from backup set

restoring datafile 00001 to/oracle/ora10g/oradata/jscn/system01.dbf

restoring datafile 00004 to/oracle/ora10g/oradata/jscn/users01.dbf

restoring datafile 00008 to/oracle/ora10g/oradata/jscn/jscnindex.dbf

channel ORA_DISK_1: reading from backuppiece /orabak/lev0_JSCN_20111201_203

channel ORA_DISK_1: restored backup piece 1

piece handle=/orabak/lev0_JSCN_20111201_203tag=LEV0

channel ORA_DISK_1: restore complete,elapsed time: 00:00:45

channel ORA_DISK_1: starting datafilebackupset restore

channel ORA_DISK_1: specifying datafile(s)to restore from backup set

restoring datafile 00005 to/oracle/ora10g/oradata/jscn/UNDOTBS2.dbf

restoring datafile 00006 to/oracle/ora10g/oradata/jscn/jscn.dbf

channel ORA_DISK_1: reading from backuppiece /orabak/lev0_JSCN_20111201_205

channel ORA_DISK_1: restored backup piece 1

piece handle=/orabak/lev0_JSCN_20111201_205tag=LEV0

channel ORA_DISK_1: restore complete,elapsed time: 00:00:25

channel ORA_DISK_1: starting datafilebackupset restore

channel ORA_DISK_1: specifying datafile(s)to restore from backup set

restoring datafile 00002 to/oracle/ora10g/oradata/jscn/UNDOTBS1.dbf

restoring datafile 00003 to/oracle/ora10g/oradata/jscn/sysaux01.dbf

restoring datafile 00007 to/oracle/ora10g/oradata/jscn/jscndata.dbf

channel ORA_DISK_1: reading from backuppiece /orabak/lev0_JSCN_20111201_204

channel ORA_DISK_1: restored backup piece 1

piece handle=/orabak/lev0_JSCN_20111201_204tag=LEV0

channel ORA_DISK_1: restore complete,elapsed time: 00:00:35

Finished restore at 23-NOV-11

 

datafile 1 switched to datafile copy

input datafile copy recid=9 stamp=767941800filename=/oracle/ora10g/oradata/jscn/system01.dbf

datafile 2 switched to datafile copy

input datafile copy recid=10stamp=767941800 filename=/oracle/ora10g/oradata/jscn/UNDOTBS1.dbf

datafile 3 switched to datafile copy

input datafile copy recid=11stamp=767941800 filename=/oracle/ora10g/oradata/jscn/sysaux01.dbf

datafile 4 switched to datafile copy

input datafile copy recid=12stamp=767941800 filename=/oracle/ora10g/oradata/jscn/users01.dbf

datafile 5 switched to datafile copy

input datafile copy recid=13stamp=767941800 filename=/oracle/ora10g/oradata/jscn/UNDOTBS2.dbf

datafile 6 switched to datafile copy

input datafile copy recid=14stamp=767941800 filename=/oracle/ora10g/oradata/jscn/jscn.dbf

datafile 7 switched to datafile copy

input datafile copy recid=15stamp=767941800 filename=/oracle/ora10g/oradata/jscn/jscndata.dbf

datafile 8 switched to datafile copy

input datafile copy recid=16stamp=767941800 filename=/oracle/ora10g/oradata/jscn/jscnindex.dbf

 

RMAN> recover database;

 

Starting recover at 16-DEC-11

using channel ORA_DISK_1

 

starting media recovery

media recovery failed

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

RMAN-00569: =============== ERROR MESSAGESTACK FOLLOWS ===============

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

RMAN-03002: failure of recover command at12/16/2011 01:08:08

ORA-00283: recovery session canceled due toerrors

RMAN-11003: failure during parse/executionof SQL statement: alter database recover if needed

 start until cancel using backup controlfile

ORA-00283: recovery session canceled due toerrors

ORA-38760: This database instance failed toturn on flashback database

 

SQL> alter database backup controlfileto trace;

Database altered.

 

5）重建控制文件

SQL> shutdown immediate;

ORA-01109: database not open

 

 

Database dismounted.

ORACLE instance shut down.

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

 

 

CREATE CONTROLFILE REUSEDATABASE "JSCN" RESETLOGS ARCHIVELOG

   MAXLOGFILES 192

   MAXLOGMEMBERS 3

   MAXDATAFILES 1024

   MAXINSTANCES 32

   MAXLOGHISTORY 292

LOGFILE

  GROUP 1'/oracle/ora10/oradata/jscn/redo01.dbf' SIZE 50M,

  GROUP 2'/oracle/ora10/oradata/jscn/redo02.dbf' SIZE 50M

-- STANDBY LOGFILE

DATAFILE

 '/oracle/ora10/oradata/jscn/system01.dbf',

 '/oracle/ora10/oradata/jscn/UNDOTBS1.dbf',

 '/oracle/ora10/oradata/jscn/sysaux01.dbf',

 '/oracle/ora10/oradata/jscn/users01.dbf',

 '/oracle/ora10/oradata/jscn/UNDOTBS2.dbf',

 '/oracle/ora10/oradata/jscn/jscn.dbf',

 '/oracle/ora10/oradata/jscn/jscndata.dbf',

 '/oracle/ora10/oradata/jscn/jscnindex.dbf'

CHARACTER SET ZHS16GBK

;

ALTER DATABASE ADD LOGFILE THREAD 2

GROUP 3'/oracle/ora10/oradata/jscn/redo03.dbf' SIZE 50M,

GROUP 4'/oracle/ora10/oradata/jscn/redo04.dbf' SIZE 50M;

SQL> alter database open resetlogs

 2  ;

 

Database altered.

 

SQL> exit

Disconnected from Oracle Database 10gEnterprise Edition Release 10.2.0.4.0 - 64bit Production

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

[oracle@IM-8-201 ~]$ 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