环境:RHEL 6.4 + Oracle 11.2.0.3 情景一:只是部分普通数据文件迁移,可以在线操作。 1.将对应表空间offline,移动数据文件到新
环境:RHEL 6.4 + Oracle 11.2.0.3
情景一:只是部分普通数据文件迁移,可以在线操作。1.将对应表空间offline,移动数据文件到新路径
2.数据文件alter database rename file '' to '';
3.再将表空间online
情景二:所有数据文件迁移。本文是针对情景二的实验,需求:主机/oradata挂节点变更为/usr2.在/usr2建立oradata文件夹来存放之前/oradata的所有文件。
操作步骤:
1.查看当前数据库的数据文件,临时文件,日志文件,控制文件,参数文件等信息。
2.根据当前spfile创建pfile文件,正常关闭数据库,移动源数据库文件到新的存储路径。
3.修改数据库参数文件,更改控制文件路径为新的存储路径,用改好的pfile文件启动数据库到mount状态。
4.重定向数据库的所有数据文件、日志文件路径,然后正常打开数据库。
5.核查各文件路径没有问题,根据当前pfile创建spfile,重启数据库实例。
1.查看当前数据库的数据文件,临时文件,日志文件,控制文件,,参数文件等信息。
SQL> select name from v$datafile; NAME oradata/sysdata/jingyu/system01.dbf /oradata/sysdata/jingyu/sysaux01.dbf /oradata/sysdata/jingyu/undotbs01.dbf /oradata/sysdata/jingyu/users01.dbf SQL> select name from v$tempfile; NAME oradata/sysdata/jingyu/temp01.dbf SQL> select member from v$logfile; MEMBER oradataoradata/sysdata/jingyu/redo01.log SQL> select name from v$controlfile; NAME oradata/sysdata/jingyu/control01.ctl /opt/app/oracle/fast_recovery_area/jingyu/control02.ctl SQL> show parameter pfile NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ spfile string dbhome_1/dbs/spfilejingyu.ora
2.根据当前spfile创建pfile文件,正常关闭数据库,移动源数据库文件到新的存储路径。
SQL> create pfile from spfile; File created. SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. --移动源数据库文件到新的存储路径: a.建立/usr2。 b./etc/fstab配置,更改/oradata为/usr2。 c.mount /usr2 d./usr2下建立oradata文件夹。 e./usr2下文件移动到/usr2/oradata下。 f.处理相关目录权限。 g.umount -l /oradata
3.修改数据库参数文件,更改控制文件路径为新的存储路径,用改好的pfile文件启动数据库到mount状态。
$ cd $ORACLE_HOME/dbs $ more initjingyu.ora jingyu.__db_cache_size=6677331968 jingyu.__java_pool_size=33554432 jingyu.__large_pool_size=33554432 jingyu.__oracle_base#ORACLE_BASE set from environment jingyu.__pga_aggregate_target=5402263552 jingyu.__sga_target=8086618112 jingyu.__shared_io_pool_size=0 jingyu.__shared_pool_size=1275068416 jingyu.__streams_pool_size.audit_file_dest.audit_trail.compatible.control_files,.db_block_size.db_domain..db_recovery_file_dest.db_recovery_file_dest_size.diagnostic_dest.dispatchers.memory_target.open_cursors.processes.remote_login_passwordfile.sessions.undo_tablespace SQL nomount ORACLE instance started. Total System Global Area 1.3429E+10 bytes Fixed Size 2241064 bytes Variable Size 6744444376 bytes Database Buffers 6677331968 bytes Redo Buffers 4636672 bytes SQL mount; Database altered. 4.重定向数据库的所有数据文件、日志文件路径,然后正常打开数据库。
SQLrename ; Database altered. SQLrename ; Database altered. SQLrename ; Database altered. SQLrename ; Database altered. SQLrename ; Database altered. SQLrename ; Database altered. SQLrename ; Database altered. SQLrename ; Database altered. SQL; Database altered.
5.核查各文件路径没有问题,根据当前pfile创建spfile,重启数据库实例。

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