Oracle教程之Oracle管理表空间（十三）--表空间脱机方式

normal 方式脱机表空间时,表空间所有的数据文件必须在线,脱机时会为每个数据文件建立检查点,当表空间online时不需要recover .temporary方式脱机表空间时,会为online的数据文件建立检查点,表空间online时只需要以前的数据文件作recover.immediate 方式脱机表空间时,数据库必须运行在归档模式下,所有数据文件不做检查点,表空间online时需要为所有的数据文件作recoverSQL> col name format a60SQL> select name,status from v$datafile;NAME STATUS------------------------------------------------------------ -------C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF SYSTEMC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\UNDOTBS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\USERS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\EXAMPLE01.DBF ONLINED:\HMIT_DB_BACKUP\DEMO.DBF ONLINED:\HMIT_DB_BACKUP\TB_CATALOG.DBF ONLINED:\HMIT_DB_BACKUP\TEST.DBF ONLINE已选择8行。SQL> alter tablespace demo offline immediate;表空间已更改。SQL> select name,status from v$datafile;NAME STATUS------------------------------------------------------------ -------C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF SYSTEMC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\UNDOTBS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\USERS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\EXAMPLE01.DBF ONLINED:\HMIT_DB_BACKUP\DEMO.DBF RECOVERD:\HMIT_DB_BACKUP\TB_CATALOG.DBF ONLINED:\HMIT_DB_BACKUP\TEST.DBF ONLINE已选择8行。SQL> alter tablespace demo online;alter tablespace demo online*第 1 行出现错误:ORA-01113: 文件 6 需要介质恢复ORA-01110: 数据文件 6: 'D:\HMIT_DB_BACKUP\DEMO.DBF'SQL> recover datafile 'D:\HMIT_DB_BACKUP\DEMO.DBF';完成介质恢复。SQL> alter tablespace demo online;表空间已更改。SQL> select name,status from v$datafile;NAME STATUS------------------------------------------------------------ -------C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF SYSTEMC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\UNDOTBS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\USERS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\EXAMPLE01.DBF ONLINED:\HMIT_DB_BACKUP\DEMO.DBF ONLINED:\HMIT_DB_BACKUP\TB_CATALOG.DBF ONLINED:\HMIT_DB_BACKUP\TEST.DBF ONLINE已选择8行。SQL> alter tablespace demo offline;表空间已更改。SQL> select name,status from v$datafile;NAME STATUS------------------------------------------------------------ -------C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF SYSTEMC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\UNDOTBS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\USERS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\EXAMPLE01.DBF ONLINED:\HMIT_DB_BACKUP\DEMO.DBF OFFLINED:\HMIT_DB_BACKUP\TB_CATALOG.DBF ONLINED:\HMIT_DB_BACKUP\TEST.DBF ONLINE已选择8行。SQL> alter tablespace demo online;表空间已更改。SQL> select name,status from v$datafile;NAME STATUS------------------------------------------------------------ -------C:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01.DBF SYSTEMC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\UNDOTBS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSAUX01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\USERS01.DBF ONLINEC:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\EXAMPLE01.DBF ONLINED:\HMIT_DB_BACKUP\DEMO.DBF ONLINED:\HMIT_DB_BACKUP\TB_CATALOG.DBF ONLINED:\HMIT_DB_BACKUP\TEST.DBF ONLINE已选择8行。源文档
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