同机数据库克隆

同机数据库克隆

第一步：

备份控制文件，数据库控制文件本分是一个二进制文件。将数据库备份为一个可读的文本文件，如下

根据

第二步：

根据alert_orcl.log文件的内容，查看最近备份的trc文件。复制log、dbf作为克隆数据库的资料。后创建control_file

STARTUP NOMOUNT

CREATE CONTROLFILE REUSE DATABASE "ORCL" RESETLOGS  ARCHIVELOG

    MAXLOGFILES 16

    MAXLOGMEMBERS 3

    MAXDATAFILES 100

    MAXINSTANCES 8

    MAXLOGHISTORY 292

LOGFILE

  GROUP 1 '/u01/oracle/oradata/orcl/redo01.log'  SIZE 50M BLOCKSIZE 512,

  GROUP 2 '/u01/oracle/oradata/orcl/redo02.log'  SIZE 50M BLOCKSIZE 512,

  GROUP 3 '/u01/oracle/oradata/orcl/redo03.log'  SIZE 50M BLOCKSIZE 512

-- STANDBY LOGFILE

DATAFILE

  '/u01/oracle/oradata/orcl/system01.dbf',

  '/u01/oracle/oradata/orcl/sysaux01.dbf',

  '/u01/oracle/oradata/orcl/undotbs01.dbf',

  '/u01/oracle/oradata/orcl/users01.dbf',

  '/u01/oraclefile/recover/rman_tbsp.dbf'

CHARACTER SET AL32UTF8

 

 

把initorcl.ora文件修改成如下，注意删除control_file文件路径

注意：数据库克隆后的名字是test，所以环境变量需要换成test。启动到nomount状态

接下来创建control_file

CREATE CONTROLFILE REUSE SET DATABASE "TEST" RESETLOGS  ARCHIVELOG    

    MAXLOGFILES 16                                                       

    MAXLOGMEMBERS 3                                                    

    MAXDATAFILES 100                                                     

    MAXINSTANCES 8                                                       

    MAXLOGHISTORY 292                                                   

LOGFILE                                                                    

  GROUP 1 '/u01/oracle/oradata/test/redo01.log'  SIZE 50M BLOCKSIZE 512,        

  GROUP 2 '/u01/oracle/oradata/test/redo02.log'  SIZE 50M BLOCKSIZE 512,        

  GROUP 3 '/u01/oracle/oradata/test/redo03.log'  SIZE 50M BLOCKSIZE 512        

-- STANDBY LOGFILE                                                        

DATAFILE                                                                   

  '/u01/oracle/oradata/test/system01.dbf',                                       

  '/u01/oracle/oradata/test/sysaux01.dbf',                                       

  '/u01/oracle/oradata/test/undotbs01.dbf',                                      

  '/u01/oracle/oradata/test/users01.dbf',                                         s

  '/u01/oracle/oradata/test/rman_tbsp.dbf'                                      

CHARACTER SET AL32UTF8                                                    

查看control_file位置：show parameter control_file;

 

把control_file的位置复制到inittest.ora文件下

最后重新开启数据库检查是否克隆成功