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$logfile;
MEMBER
--------------------------------------------------------------------------------
/oradata/sysdata/jingyu/redo03.log
/oradata/sysdata/jingyu/redo02.log
/oradata/sysdata/jingyu/redo01.log
SQL> select name from v$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 /opt/app/oracle/product/11.2.0
/dbhome_1/dbs/spfilejingyu.ora
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
$ 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=0 *.audit_file_dest= *.audit_trail= *.compatible= *.control_files=, *.db_block_size=8192 *.db_domain= *.db_name= *.db_recovery_file_dest= *.db_recovery_file_dest_size=10737418240 *.diagnostic_dest= *.dispatchers= *.memory_target=13459521536 *.open_cursors=1000 *.processes=1500 *.remote_login_passwordfile= *.sessions=1655 *.undo_tablespace= SQL> startup pfile= 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> alter database mount; Database altered.
SQL> alter database rename file to ; Database altered. SQL> alter database rename file to ; Database altered. SQL> alter database rename file to ; Database altered. SQL> alter database rename file to ; Database altered. SQL> alter database rename file to ; Database altered. SQL> alter database rename file to ; Database altered. SQL> alter database rename file to ; Database altered. SQL> alter database rename file to ; Database altered. SQL> alter database open; Database altered.
SQL> select name from v$datafile; NAME -------------------------------------------------------------------------------- /usr2/oradata/sysdata/jingyu/system01.dbf /usr2/oradata/sysdata/jingyu/sysaux01.dbf /usr2/oradata/sysdata/jingyu/undotbs01.dbf /usr2/oradata/sysdata/jingyu/users01.dbf SQL> select name from v$tempfile; NAME -------------------------------------------------------------------------------- /usr2/oradata/sysdata/jingyu/temp01.dbf SQL> select member from v$logfile; MEMBER -------------------------------------------------------------------------------- /usr2/oradata/sysdata/jingyu/redo03.log /usr2/oradata/sysdata/jingyu/redo02.log /usr2/oradata/sysdata/jingyu/redo01.log SQL> select name from v$controlfile; NAME -------------------------------------------------------------------------------- /usr2/oradata/sysdata/jingyu/control01.ctl /opt/app/oracle/fast_recovery_area/jingyu/control02.ctl SQL> show parameter pfile NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ spfile string SQL> create spfile from pfile; File created. SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> startup 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 Database mounted. Database opened.
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