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

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操作环境

  SuSE11+Oracle11gR2

问题现象

  删除oracle数据库用户失败,提示ORA-01940: cannot drop a user that is currently connected错误

问题分析

  NA

问题解决

  1、SQL>SELECT SID,SERIAL# FROM V$SESSION WHERE USERNAME=‘USERNAE‘;

  2、SQL>ALTER SYSTEM DISCONNECT SESSION ‘SID,SERIAL#‘ IMMEDIATE;

知识延伸

  oracle杀掉会话进程有3种方式

  1、ALTER SYSTEM KILL SESSION。不是真正干掉会话,只是标记会话状态为killed,等待pmon进程清除。这种方式不适合用于删除oracle用户的脚本,有可能到时死循环。可以使用ALTER SYSTEM KILL SESSION ‘sid,serial#‘ IMMEDIATE;

  2、ALTER SYSTEM DISCONNECT SESSION,可以直接从操作系统干掉进程。有如下2种形式。

     SQL > ALTER SYSTEM DISCONNECT SESSION ‘sid,serial#‘ POST_TRANSACTION; #等待事务完成断开会话

     SQL>ALTER SYSTEM DISCONNECT SESSION ‘sid,serial#‘ IMMEDIATE; # 立即中断会话

  3、KILL -9 SPID。根据SQL查找到相关进程,kill掉。 

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