如何释放Oracle服务器过多的连接数
Oracle服务器连接数过多会当掉，把连接数过多的客户机网线拔出后，在远程Oracle上依然还会保留此用户的连接数，久久不能释放，上网查了下可以以下面方法解决。
创建一个允许3分钟IDLE时间的PROFILE：
SQL> CREATE PROFILE KILLIDLE LIMIT IDLE_TIME 3;
Profile created.
新创建PROFILE的内容：
SQL> col limit for a10
SQL> select * from dba_profiles where profile='KILLIDLE';
PROFILE RESOURCE_NAME RESOURCE LIMIT
—————————— ——————————– ——– ———-
KILLIDLE COMPOSITE_LIMIT KERNEL DEFAULT
KILLIDLE SESSIONS_PER_USER KERNEL DEFAULT
KILLIDLE CPU_PER_SESSION KERNEL DEFAULT
KILLIDLE CPU_PER_CALL KERNEL DEFAULT
KILLIDLE LOGICAL_READS_PER_SESSION KERNEL DEFAULT
KILLIDLE LOGICAL_READS_PER_CALL KERNEL DEFAULT
KILLIDLE IDLE_TIME KERNEL 3
KILLIDLE CONNECT_TIME KERNEL DEFAULT
KILLIDLE PRIVATE_SGA KERNEL DEFAULT
KILLIDLE FAILED_LOGIN_ATTEMPTS PASSWORD DEFAULT
KILLIDLE PASSWORD_LIFE_TIME PASSWORD DEFAULT
PROFILE RESOURCE_NAME RESOURCE LIMIT
—————————— ——————————– ——– ———-
KILLIDLE PASSWORD_REUSE_TIME PASSWORD DEFAULT
KILLIDLE PASSWORD_REUSE_MAX PASSWORD DEFAULT
KILLIDLE PASSWORD_VERIFY_FUNCTION PASSWORD DEFAULT
KILLIDLE PASSWORD_LOCK_TIME PASSWORD DEFAULT
KILLIDLE PASSWORD_GRACE_TIME PASSWORD DEFAULT
16 rows selected.
测试用户：
SQL> select username,profile from dba_users where username='EYGLE';
USERNAME PROFILE
—————————— ——————–
EYGLE DEFAULT
修改eygle用户的PROFILE使用新建的PROFILE：
SQL> alter user eygle profile killidle;
User altered.
SQL> select username,profile from dba_users where username='EYGLE';
USERNAME PROFILE
—————————— ——————–
EYGLE KILLIDLE
进行连接测试：
[oracle@test126 admin]$ sqlplus eygle/eygle@eygle
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Oct 13 08:07:13 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning and Data Mining options
SQL> select username,profile from dba_users where username='EYGLE';
USERNAME PROFILE
—————————— ——————————
EYGLE KILLIDLE
当IDLE超过限制时间时，连接会被断开：
SQL> select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual;
TO_CHAR(SYSDATE,’YY
——————-
2006-10-13 08:08:41
SQL> select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual;
select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual
*
ERROR at line 1:
ORA-02396: exceeded maximum idle time, please connect again
