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查系统默认的策略，连续验证10次错误帐户即会被锁
SQL> select resource_name, limit from dba_profiles where profile=‘DEFAULT‘; RESOURCE_NAME LIMIT -------------------------------- ---------------------------------------- COMPOSITE_LIMIT UNLIMITED SESSIONS_PER_USER UNLIMITED CPU_PER_SESSION UNLIMITED CPU_PER_CALL UNLIMITED LOGICAL_READS_PER_SESSION UNLIMITED LOGICAL_READS_PER_CALL UNLIMITED IDLE_TIME UNLIMITED CONNECT_TIME UNLIMITED PRIVATE_SGA UNLIMITED FAILED_LOGIN_ATTEMPTS 10 PASSWORD_LIFE_TIME 180 RESOURCE_NAME LIMIT -------------------------------- ---------------------------------------- PASSWORD_REUSE_TIME UNLIMITED PASSWORD_REUSE_MAX UNLIMITED PASSWORD_VERIFY_FUNCTION NULL PASSWORD_LOCK_TIME 1 PASSWORD_GRACE_TIME 7 16 rows selected.
查看用户被锁状态
SQL> select username,account_status from dba_users where username=‘USER1‘; USERNAME ACCOUNT_STATUS ------------------------------ -------------------------------- USER1 LOCKED(TIMED) SQL> select name,lcount from user$ where name=‘USER1‘; NAME LCOUNT ------------------------------ ---------- USER1 10
先处理问题，将验证错误次数改为不受限制，解锁用户
SQL> alter profile default limit FAILED_LOGIN_ATTEMPTS unlimited; Profile altered. SQL> alter user user1 account unlock; User altered.
再查看用户验证的错误次数，如果此帐户一直在验证，可以看到次数一直在增加
SQL> select name,lcount from user$ where name=‘USER1‘;
通过日志文件/u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml追查请求来源ip，但是效果不理想
1.看不到请求的用户名，看不到请求结果，对请求来源ip判断可能有误
2.日志过多，暂时想不到关键字过滤
[oracle@localhost adump]$ lsnrctl status LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 12-MAY-2016 11:46:39 Copyright (c) 1991, 2009, Oracle. All rights reserved. Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=iZ11y546tzlZ)(PORT=1521))) STATUS of the LISTENER ------------------------ Alias LISTENER Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production Start Date 10-MAY-2016 09:44:40 Uptime 2 days 2 hr. 1 min. 59 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File /u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora Listener Log File /u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml Listening Endpoints Summary... [oracle@localhost ~]$ tail -f /u01/app/oracle/diag/tnslsnr/localhost/listener/alert/log.xml <msg time=‘2016-05-12T11:52:33.423+08:00‘ org_id=‘oracle‘ comp_id=‘tnslsnr‘ type=‘UNKNOWN‘ level=‘16‘ host_id=‘localhost‘ host_addr=‘10.174.70.172‘> <txt>12-MAY-2016 11:52:33 * (CONNECT_DATA=(SERVICE_NAME=orcl)(CID=(PROGRAM=C:\Program?Files??x86?\PremiumSoft\Navicat?Premium\navicat.exe)(HOST=HUJF-PC)(USER=hujf))) * (ADDRESS=(PROTOCOL=tcp)(HOST=110.82.160.106)(PORT=59584)) * establish * orcl * 0 </txt> </msg>
设置格式，查returncode为1017的，可以很清楚看到验证的用户(userid)计算机名(userhost，局域网有用)请求来源ip(comment$text)
SQL> set pagesize 100; SQL> set linesize 150; SQL> select sessionid,userid,userhost,comment$text,spare1,ntimestamp# from aud$ where returncode=1017; 53080 USER1 WORKGROUP\HUJF-PC Authenticated by: DATABASE; Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=110.82.160.106)(PORT=59584)) hujf 12-MAY-16 03.52.34.569085 AM 53085 SYSTEM WORKGROUP\HUJF-PC Authenticated by: DATABASE; Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=110.82.160.106)(PORT=6720)) hujf 12-MAY-16 03.55.39.857892 AM
[oracle@localhost ~]$ oerr ora 28000 28000, 00000, "the account is locked" // *Cause: The user has entered wrong password consequently for maximum // number of times specified by the user‘s profile parameter // FAILED_LOGIN_ATTEMPTS, or the DBA has locked the account // *Action: Wait for PASSWORD_LOCK_TIME or contact DBA [oracle@localhost ~]$ oerr ora 1017 01017, 00000, "invalid username/password; logon denied" // *Cause: // *Action:
ORA-28000: the account is locked 查哪个具体ip地址造成
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原文地址：http://www.cnblogs.com/hjfeng1988/p/5485150.html
