ORA-01940 无法删除当前已连接的用户

今天在进行测试环境导数据的时候，需要记性drop user操作。在执行drop user的时候，提示：ORA-01940: cannot drop a user that is currently connected

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

问题很明显，有用户在连接，不允许drop掉该user。

select username,sid,serial#,paddr from v$session where username='ECITY'; USERNAME                                    SID    SERIAL# PADDR ------------------------------ ---------- ------------------------------------------------- ECITY                                              634          7 00000000C028D198 SQL> select PROGRAM from v$process where addr='00000000C028D198'; PROGRAM ---------------------------------------------------------------------------------------------------------- Oracle@oradb01 (DW00) SQL> SQL> alter system kill session '634,7'; System altered. SQL> SQL> select saddr,sid,serial#,paddr,username,status from v$session where username is not null; SQL> drop user ecity CASCADE; User dropped. SQL>

问题解决，记得KILL进程前，先看看是啥进程，哪台机连过来的，能否KILL等等。测试环境还好，生产无小事。