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

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我们在删除数据库用户时候会碰到如下错误

SQL> DROP USER sys_xj cascade;
DROP USER sys_xj cascade
*
ERROR at line 1:
ORA-01940: cannot drop a user that is currently connected

解决方法：

1.查询出还在连接的此用户会话进程

SQL> SELECT SID,SERIAL# FROM V$SESSION WHERE USERNAME=‘SYS_XJ‘
2 ;

SID SERIAL#
---------- ----------
452 8801
474 1523

2.结束此用户所有会话

SQL> ALTER SYSTEM KILL SESSION ‘452,8801‘;

System altered.

SQL> ALTER SYSTEM KILL SESSION ‘474,1523‘;

System altered.

3.删除用户

SQL> DROP USER sys_xj cascade;

User dropped.

此时删除成功

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

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原文地址：http://www.cnblogs.com/binfoo/p/4845988.html