ORA-01940: cannot drop a user that is currently connected

oracle删除用户时有如下提示:

错误提示 

  1. SQL> DROP USER TMSTEST cascade ;
  2. DROP USER TMSTEST cascade
  3. *
  4. ERROR at line 1:
  5. ORA-01940: cannot drop a user that is currently connected
这个说明有seesion连接到了这个用户,需要kill掉这个seesion。
首先查找到连接的seesion,生成一个kill语句

 生成语句

  1. SQL> select \'alter system kill session \'\'\'||sid||\',\'||serial#||\'\'\' immediate;\' sss from v$session where username=\'TMSTEST\';

  2. sss
  3. -----------------------------------------------------
  4. alter system kill session \'30,62441\' immediate;
运行生成的alter语句,kill掉seesion。

 kill seesion

  1. SQL> alter system kill session \'30,62441\' immediate;

  2. System altered.
重新删除用户成功。

 再次删除用户

  1. SQL> DROP USER TMSTEST cascade ;

  2. User dropped.

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