【Oracle】 Oracle使用cold backup克隆数据库

冷备克隆数据库，需要关闭源库。一般用于没有开启归档的测试库。

 

源库：srcdb

目标库：trgdb

　　

1.将控制信息备份到trace文件(源端执行)

alter database backup controlfile to trace as '/export/home/oracle/ctrl_bkokp.sql';

　　

2.记录下数据文件的位置(源端执行)​

SQL> select file_name from dba_data_files;

FILE_NAME
---------------------------------------------------------------
/u03/oracle/oradata/SRCDB/system01.dbf
/u03/oracle/oradata/SRCDB/sysaux01.dbf
/u03/oracle/oradata/SRCDB/undotbs01.dbf
/u03/oracle/oradata/SRCDB/users01.dbf
/u03/oracle/oradata/SRCDB/CTLDATA_01.dbf
/u03/oracle/oradata/SRCDB/CTLIDX_01.dbf
/u03/oracle/oradata/SRCDB/catalog01.dbf
/u03/oracle/oradata/SRCDB/catalog_idx01.dbf
/u03/oracle/oradata/SRCDB/GGATE_01.dbf


SQL> select file_name from dba_temp_files;

FILE_NAME
--------------------------------------------------------------
/u03/oracle/oradata/SRCDB/temp01.dbf
/u03/oracle/oradata/SRCDB/catalog_temp01.dbf

　　

3.关闭源库

SHUTDOWN IMMEDIATE;

 

4.将数据文件和临时文件拷贝到目标库

scp /u03/oracle/oradata/SRCDB/*dbf oracle@targret-host.dbclass.com:/u03/oracle/oradata/TRGDB/

　　

5.目标库准备参数文件

从源库拷贝过来，改一下即可。​

cat initTRGDB.ora

*.audit_file_dest='/u01/app/oracle/admin/TRGDB/adump'
*.audit_trail='D
*.compatible='12.1.0.2.0'
*.control_files='/u03/oracle/oradata/TRGDB/control01.ctl','/u03/oracle/oradata/TRGDB/control02.ctl'
*.db_block_size=8192
*.db_domain=''
*.db_name='TRGDB'
*.diagnostic_dest='/u01/app/oracle/'*.event=''
*.open_cursors=300
*.pga_aggregate_target=524288000
*.processes=1000
*.remote_login_passwordfile='EXCLUSIVE'
*.sec_case_sensitive_logon=FALSE
*.sessions=1536
*.sga_max_size=7373586432
*.sga_target=7373586432
*.undo_tablespace='UNDOTBS1'

　　

6.将目标库启动到nomount状态​

export ORACLE_SID=TRGDB​

startup nomount pfile=initTRGDB.ora

 

7.目标库重建控制文件

使用步骤1创建的trace信息，重建控制文件​

SQL>CREATE CONTROLFILE SET DATABASE "SRCDB" RESETLOGS FORCE LOGGING ARCHIVELOG
MAXLOGFILES 16
MAXLOGMEMBERS 3
MAXDATAFILES 100
MAXINSTANCES 8
MAXLOGHISTORY 2336
LOGFILE
GROUP 1 '/u01/oracle/oradata/TRGDB/redo01.log' SIZE 50M BLOCKSIZE 512,
GROUP 2 '/u01/oracle/oradata/TRGDB/redo02.log' SIZE 50M BLOCKSIZE 512,
GROUP 3 '/u01/oracle/oradata/TRGDB/redo03.log' SIZE 50M BLOCKSIZE 512
-- STANDBY LOGFILE
DATAFILE
'/u01/oracle/oradata/TRGDB/system01.dbf',
'/u01/oracle/oradata/TRGDB/CTLDATA_01.dbf',
'/u01/oracle/oradata/TRGDB/sysaux01.dbf',
'/u01/oracle/oradata/TRGDB/undotbs01.dbf',
'/u01/oracle/oradata/TRGDB/CTLIDX_01.dbf',
'/u01/oracle/oradata/TRGDB/users01.dbf',
'/u01/oracle/oradata/TRGDB/catalog01.dbf',
'/u01/oracle/oradata/TRGDB/catalog_idx01.dbf',
'/u01/oracle/oradata/TRGDB/GGATE_01.dbf'
CHARACTER SET AL32UTF8
;
/

controlfile created;

　　

这里使用了set database，因为克隆的是个新库。

CREATE CONTROLFILE SET DATABASE “SRCDB” RESETLOGS FORCE LOGGING ARCHIVELOG

　　

如果想和源库一样，使用reuse database命令。

 

8.以resetlog模式打开数据库

ALTER DATABASE OPEN RESETLOGS;

　　

9.添加temp文件​

ALTER TABLESPACE TEMP ADD TEMPFILE '/u03/oracle/oradata/TRGDB/temp01.dbf'
SIZE 11529M REUSE AUTOEXTEND ON NEXT 655360 MAXSIZE 32767M;


ALTER TABLESPACE CATALOG_TEMP ADD TEMPFILE '/u03/oracle/oradata/TRGDB/catalog_temp01.dbf'
SIZE 524288000 REUSE AUTOEXTEND OFF;