Home Database Mysql Tutorial Oracle创建/删除、导入/导出等命令总结

Oracle创建/删除、导入/导出等命令总结

Jun 07, 2016 pm 04:22 PM
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//创建临时表空间 create temporary tablespace zfmi_temp tempfile 'D:oracleoradatazfmizfmi_temp.dbf' size 32m autoextend on next 32m maxsize 2048m extent management local; //tempfile参数必须有 //创建数据表空间 create tablespace zfmi logging

   //创建临时表空间

  create temporary tablespace zfmi_temp

  tempfile 'D:oracleoradatazfmizfmi_temp.dbf'

  size 32m

  autoextend on

  next 32m maxsize 2048m

  extent management local;

  //tempfile参数必须有

  //创建数据表空间

  create tablespace zfmi

  logging

  datafile 'D:oracleoradatazfmizfmi.dbf'

  size 100m

  autoextend on

  next 32m maxsize 2048m

  extent management local;

  //datafile参数必须有

  //删除用户以及用户所有的对象

  drop user zfmi cascade;

  //cascade参数是级联删除该用户所有对象,经常遇到如用户有对象而未加此参数则用户删不了的问题,所以习惯性的加此参数

  //删除表空间

  前提:删除表空间之前要确认该表空间没有被其他用户使用之后再做删除

  drop tablespace zfmi including contents and datafiles cascade onstraints;

  //including contents 删除表空间中的内容,如果删除表空间之前表空间中有内容,而未加此参数,表空间删不掉,所以习惯性的加此参数

  //including datafiles 删除表空间中的数据文件

  //cascade constraints 同时删除tablespace中表的外键参照

  如果删除表空间之前删除了表空间文件,解决办法:

  如果在清除表空间之前,,先删除了表空间对应的数据文件,会造成数据库无法正常启动和关闭。

  可使用如下方法恢复(此方法已经在oracle9i中验证通过):

  下面的过程中,filename是已经被删除的数据文件,如果有多个,则需要多次执行;tablespace_name是相应的表空间的名称。

  $ sqlplus /nolog

  SQL> conn / as sysdba;

  如果数据库已经启动,则需要先执行下面这行:

  SQL> shutdown abort

  SQL> startup mount

  SQL> alter database datafile 'filename' offline drop;

  SQL> alter database open;

  SQL> drop tablespace tablespace_name including contents;

  //创建用户并指定表空间

  create user zfmi identified by zfmi

  default tablespace zfmi temporary tablespace zfmi_temp;

  //identified by 参数必须有

  //授予message用户DBA角色的所有权限

  GRANT DBA TO zfmi;

  //给用户授予权限

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