今天在windows7测试中遇到了ORA-00020错误。
下面模拟一下解决过程C:/Users/Liangwei>sqlplus user/passwordSQL*Plus: Release 11.2.0.1.0 Production on 星期日 1月 16 16:16:26 2011Copyright (c) 1982, 2010, Oracle. All rights reserved.ERROR:ORA-00020: maximum number of processes (150) exceeded
此时使用：sqlplus / as sysdba 或 sqlplus -prelim / as sysdba 同样无法登陆
C:/Users/Liangwei>netstat -bo活动连接 协议 本地地址 外部地址 状态 PID TCP [fe80::942a:8432:c23f:69ff%19]:1521 SS-LiangWei:50248 ESTABLISHED 2528 [TNSLSNR.exe] TCP [fe80::942a:8432:c23f:69ff%19]:1521 SS-LiangWei:50350 ESTABLISHED 2528 [TNSLSNR.exe] TCP [fe80::942a:8432:c23f:69ff%19]:50248 SS-LiangWei:1521 ESTABLISHED 2604 [ORACLE.EXE] TCP [fe80::942a:8432:c23f:69ff%19]:50350 SS-LiangWei:1521 ESTABLISHED 3920 [plsqldev.exe]
C:/Users/Liangwei>taskkill /pid 3920成功: 给进程发送了终止信号，进程的 PID 为 3920。
-- 杀掉pid为3920的进程后，可以登录。--只要可以进入oracle我们就可以利用orakill工具来为所欲为，呵呵。
C:/Users/Liangwei>sqlplus / as sysdbaSQL*Plus: Release 11.2.0.1.0 Production on 星期日 1月 16 16:17:35 2011Copyright (c) 1982, 2010, Oracle. All rights reserved.连接到:Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - ProductionWith the Partitioning, OLAP, Data Mining and Real Application Testing optionsSQL>SQL> COL SQL FOR A22;SQL> COL SPID FOR A5;SQL> COL OSUSER FOR A20;SQL> COL PROGRAM FOR A12;SQL> select ' orakill ' || (select instance_name from v$instance) || ' '|| spid SQL , 2 spid, 3 osuser, 4 s.program 5 from v$process p, v$session s 6 where p.addr = s.paddr 7 and osuser!='SYSTEM';
SQL SPID OSUSER PROGRAM---------------------- ----- -------------------- ------------ orakill liangwei 3508 3508 SS-LIANGWEI/Liangwei plsqldev.exe orakill liangwei 3336 3336 SS-LIANGWEI/Liangwei sqlplus.exe orakill liangwei 868 868 SS-LIANGWEI/Liangwei plsqldev.exe orakill liangwei 2324 2324 SS-LIANGWEI/Liangwei sqlplus.exe orakill liangwei 3576 3576 SS-LIANGWEI/Liangwei plsqldev.exe
SQL>host orakillUsage: orakill sid thread where sid = the Oracle instance to target thread = the thread id of the thread to kill The thread id should be retrieved from the spid column of a query such as: select spid, osuser, s.program from v$process p, v$session s where p.addr=s.paddr
SQL> host orakill liangwei 3508Kill of thread id 3508 in instance liangwei successfully signalled.
SQL> /
SQL SPID OSUSER PROGRAM---------------------- ----- ------------------------------- ------------ orakill liangwei 3336 3336 SS-LIANGWEI/Liangwei sqlplus.exe orakill liangwei 868 868 SS-LIANGWEI/Liangwei plsqldev.exe orakill liangwei 2324 2324 SS-LIANGWEI/Liangwei sqlplus.exe
