backup

Oracle Duplicate database

Duplicate database

標籤： Oracle

流程：

一、Backup Source DB and Copy file to Duplicate DB

二、從Source DB備份spfile到pfile

三、設定Duplicate DB password

四、設定Duplicate DB TNS

五、修改pfile檔案內容及路徑，並建立路徑

六、Duplicate DB(From Disk & Tape+RC)

DB:Oracle 10.2.0.4

Source DB:testdb(來源端，要被Duplicate DB)

Target DB:orcl2(Duplicate 出來的DB)

OS:Redhat 5.4

*****************(同台電腦使用RMAN，不同SID)

Source DB:

一、備份資料(因此測試是在同一台，所以資料兩台都可以看得到)

#export ORACLE_SID=testdb

# rman target /

rman>

run {

backup database;

sql 'alter system archive log current';

backup archivelog all;

}

二、備份spfile到pfile

SQL> create pfile='/home/oracle/initorcl2.ora' from spfile; –使用source database的parameter file產生基本的auxiliary parameter file

把產生的pfile放到target db，當然備份檔案也要copy過去給Duplicate Server(若是同一台就沒有差異)

三、設定Duplicate DB Password

Target DB:

建立duplicate database(orcl2)的password file,假設orcl2為instance name(同一台機器上不能有相同名字的instance出現,dbname也是如此)

[oracle@oracleDB ~]$ orapwd file=$ORACLE_HOME/dbs/orapw$ORACLE_SID password=oracle entries=10 ignorecase=y

Ps:ignorecase=y是在11g才有的參數，忽略大小寫

四、設定Duplicate DB TNS

建立net service name(testdb2),可以連到auxiliary instance

–如果要使用@orcl2連到auxiliary instance,則記得必須對listener進行static registration

TESTDB2 =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.55.79.26)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = orcl2)

)

[oracle@oracleDB ~]$ tnsping testdb2

五、修改pfile檔案內容及路徑，並確認所有的路徑都存在

**修改initorcl2.ora將其變成正確的auxiliary instance的parameter file

#vi /home/oracle/initorcl2.ora

orcl2.__db_cache_size=415236096

orcl2.__java_pool_size=4194304

orcl2.__large_pool_size=4194304

orcl2.__shared_pool_size=150994944

orcl2.__streams_pool_size=0

*.audit_file_dest='/u1/oracle/admin/orcl2/adump'

*.background_dump_dest='/u1/oracle/admin/orcl2/bdump'

*.compatible='10.2.0.3.0'

*.control_files='/u2/oradata/orcl2/control01.ctl','/u2/oradata/orcl2/control02.ctl','/u2/oradata/orcl2/control03.ctl'#Restore Controlfile

*.core_dump_dest='/u1/oracle/admin/orcl2/cdump'

*.db_block_size=8192

*.db_domain=''

*.db_file_multiblock_read_count=16

*.db_name='orcl2' <–若duplicated database位在同一台機器上,則必須與target database不同名字

*.dispatchers='(PROTOCOL=TCP) (SERVICE=orcl2XDB)'

*.job_queue_processes=10

*.log_archive_dest_1='LOCATION=/archive/orcl2'

#*.log_archive_start=TRUE <-這一行需註解掉，否則會出現ORA-32006: LOG_ARCHIVE_START initialization parameter has been deprecated

*.open_cursors=300

*.pga_aggregate_target=418381824

*.processes=150

*.remote_login_passwordfile='EXCLUSIVE'

*.sga_target=581959680

*.undo_management='AUTO'

*.undo_tablespace='UNDOTBS1'

*.user_dump_dest='/u1/oracle/admin/orcl2/udump'

*.db_file_name_convert='/u2/oradata/testdb','/u2/oradata/orcl2' <—-重要

*.log_file_name_convert='/u2/oradata/testdb','/u2/oradata/orcl2' <—-重要

–在duplicated database所在機器上進行

–建立相關的目錄(根據pfile來建立File)

[oracle@C5TDB2 ~]$ mkdir -p /u1/oracle/admin/orcl2/adump

[oracle@C5TDB2 ~]$ mkdir -p /u1/oracle/admin/orcl2/bdump

[oracle@C5TDB2 ~]$ mkdir -p /u1/oracle/admin/orcl2/cdump

[oracle@C5TDB2 ~]$ mkdir -p /u1/oracle/admin/orcl2/udump

[oracle@C5TDB2 ~]$ mkdir -p /u2/oracle/orcl2

[oracle@C5TDB2 ~]$ mkdir -p /archive/orcl2

[oracle@C5TDB2 ~]$ mkdir /u2/oradata/orcl2

六、Duplicate DB (From Disk & Tape)

1.startup aux instance nomount

[oracle@oracleDB ~]$ export ORACLE_SID=orcl2

[oracle@oracleDB ~]$ sqlplus / as sysdba

Connected to an idle instance.

SQL> startup nomount pfile=/home/oracle/initorcl2.ora –必須事先將修改完成的initorcl2.ora傳遞到duplicated database所在的主機上

2.在auxilary instance進行duplicate database

[oracle@oracleDB ~]$ export ORACLE_SID=orcl2

[oracle@oracleDB ~]$ rman target sys/oracle@testdb2 auxiliary / –@orcl連線到target database

connected to target database: ORCL (DBID=1257464825)

connected to auxiliary database: ORCL2 (not mounted)

RMAN> run {

allocate auxiliary channel aux1 device type disk;

duplicate target database to orcl2;} –orcl2必須與parameter file的db_name相同

**其餘工作將由RMAN自動產生的memory script完成所有操作

*******************補充資料，透過Tape還原+Catalog****************

Source db:c5pepm

Source Server:c5subdb1

若資料是放在Tape，有catalog DB，還原方式如下：

PS.若需要NBU Agent，當然需要先設定好及安裝好設定

#export ORACLE_SID=c5pepm

設定要從catalog server還原的server(主機名稱)(NBU指定的電腦名稱)

#export NB_ORA_CLIENT=c5subdb1

sqlplus / as sysdba

SQL>startup nomount pfile=/home/oracle/c5pepm.ora

$rman target sys/oracle@c5pepm catalog rman/rman@c5rman auxiliary /

Recovery Manager: Release 10.2.0.4.0 – Production on Tue Jan 14 10:52:05 2014

connected to target database: C5PEPM (DBID=223792576)

connected to recovery catalog database

connected to auxiliary database: C5PEPM (not mounted)

run {

allocate auxiliary channel aux1 device type 'sbt_tape';

allocate auxiliary channel aux2 device type 'sbt_tape';

duplicate target database to c5pepm;}

**也可以使用active target database當作資料來源-> RMAN> duplicate target database to orcl2 from active database;

常見問題

Q1:

released channel: aux1

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

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

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

RMAN-03002: failure of Duplicate Db command at 01/13/2014 11:40:44

RMAN-03015: error occurred in stored script Memory Script

RMAN-06026: some targets not found – aborting restore

RMAN-06100: no channel to restore a backup or copy of datafile 5

RMAN-06100: no channel to restore a backup or copy of datafile 4

RMAN-06100: no channel to restore a backup or copy of datafile 3

RMAN-06100: no channel to restore a backup or copy of datafile 2

RMAN-06100: no channel to restore a backup or copy of datafile 1

A:target端未做archive log backup

run {

sql 'alter system archive log current';

backup archivelog all;

}

Q: ORA-32006: LOG_ARCHIVE_START initialization parameter has been deprecated

Control file需把”*.log_archive_start=TRUE”註解掉或刪除掉，在google找到的原因是說10g之後已把這個參數拿掉了。

RMAN-03002: failure of Duplicate Db command at 01/13/2014 13:51:05

RMAN-06136: ORACLE error from auxiliary database: ORA-01503: CREATE CONTROLFILE failed

ORA-01504: database name 'ORCL2' does not match parameter db_name 'TESTDB'

從duplicate端啟動db，可以看到說未找到參數檔，copy啟動參數到這個目錄底下：

SQL> startup

ORA-01078: failure in processing system parameters

LRM-00109: could not open parameter file '/u1/oracle/10gr2/dbs/initorcl2.ora'

# cp /home/oracle/initorcl2.ora /u1/oracle/10gr2/dbs/initorcl2.ora

Q: ORA-01589: must use RESETLOGS or NORESETLOGS option for database open

A:啟動DB時，需要Resetlog

SQL>startup mount;

SQL> alter database open resetlogs;

Q: RMAN-05001: auxiliary filename /oradata/c5pepm/data/c5pepm/sysaux01.dbf conflicts with a file used by the target database

RMAN-05001: auxiliary filename /oradata/c5pepm/data/c5pepm/undotbs01.dbf conflicts with a file used by the target database

RMAN-05001: auxiliary filename /oradata/c5pepm/data/c5pepm/system01.dbf conflicts with a file used by the target database

A:未設定此兩個參數，一定要全部都設定完成

*.db_file_name_convert='source1',’dest1’, 'source2',’dest2’ , 'source3',’dest3’

*.log_file_name_convert='source1',’dest1’, 'source2',’dest2’ , 'source3',’dest3’

參考資料：

Rman Duplicate database&常見問題

http://shortterm.blog.163.com/blog/static/588188242009635282339/

異機使用rman備份檔(11g)

http://ladfi.blogspot.tw/2013/07/oracle-11g-duplicate-database-rman.html

Duplicate database

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