Oracle用户被锁的原因以及解决办法

在登陆时被告知test用户被锁

1、用dba角色的用户登陆，进行解锁，先设置具体时间格式，以便查看具体时间

SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
Session altered.

2、查看具体的被锁时间

SQL> select username,lock_date from dba_users where username='TEST';
USERNAME LOCK_DATE
TEST 2012-07-10 12:04:27

3、解锁

SQL> alter user test account unlock;
User altered.

4、查看是那个ip造成的test用户被锁

[oracle@hzwebdb11g admin]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 16-JUL-2012 21:11:17

Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=hzwebdb11g.qa.webex.com)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date                15-MAY-2012 15:24:17
Uptime                    62 days 5 hr. 47 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/OraBase/OraHome1/network/admin/listener.ora
Listener Log File         /home/oracle/OraBase/diag/tnslsnr/hzwebdb11g/listener/alert/log.xml

查看/home/oracle/OraBase/diag/tnslsnr/hzwebdb11g/listener/alert/log.xml 日志

<msg time='2012-07-10T12:04:27.637-04:00' org_id='oracle' comp_id='tnslsnr'
 type='UNKNOWN' level='16' host_id='hzwebdb11g.qa.webex.com'
 host_addr='10.224.188.34'>
 <txt>10-JUL-2012 12:04:27 * (CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=qawebdb.qa.webex.com)(FAILOVER_MODE=(TYPE=SELECT)(METHOD=BASIC)(RETRIES=180)(DELAY=5))(CID=(PROGRAM=wbxmcs-01)(HOST=gm02lnmcs1001)(USER=root))) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.224.182.161)(PORT=50034)) * establish * qawebdb.qa.webex.com * 0
 </txt>
</msg>

发现10.224.182.161这个IP连接数据库失败锁住数据库，改掉这个server的密码

一般数据库默认是10次尝试失败后锁住用户

1、查看FAILED_LOGIN_ATTEMPTS的值

select * from dba_profiles

2、修改为30次

alter profile default limit FAILED_LOGIN_ATTEMPTS 30;

3、修改为无限次（为安全起见，不建议使用）

alter profile default limit FAILED_LOGIN_ATTEMPTS unlimited;

 

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