解决oracle用户锁定

故障现象： SQL> connect scott/scott ERROR: ORA-01017: invalid username/password; logon denied SQL> connect scott/scott ERROR: ORA-28000: the account is locked 表明:oracle 中 scott用户因密码不对，10次以后，就被locked。 SQL> select account_status,lock_date,profile from dba_users where username='SCOTT'; ACCOUNT_STATUS                   TO_CHAR(LOCK_DATE,'D PROFILE -------------------------------- -------------------- ------------------------------ LOCKED(TIMED)                    31-MAY-2004 19:33:53 DEFAULT 这样，表明再添加oracle session时，就报错，无法连接上去。 故障解决： （1） 给当前用户解锁： sql> alter user scott account unlock; （2） 查看当前用户的限制： SQL>  SELECT resource_name,resource_type,limit FROM dba_profiles WHERE profile='DEFAULT'; RESOURCE_NAME                    RESOURCE_TYPE LIMIT -------------------------------- ------------- ---------------------------------------- COMPOSITE_LIMIT                  KERNEL        UNLIMITED SESSIONS_PER_USER                KERNEL        UNLIMITED CPU_PER_SESSION                  KERNEL        UNLIMITED CPU_PER_CALL                     KERNEL        UNLIMITED LOGICAL_READS_PER_SESSION        KERNEL        UNLIMITED LOGICAL_READS_PER_CALL           KERNEL        UNLIMITED IDLE_TIME                        KERNEL        UNLIMITED CONNECT_TIME                     KERNEL        UNLIMITED PRIVATE_SGA                      KERNEL        UNLIMITED FAILED_LOGIN_ATTEMPTS            PASSWORD      10 PASSWORD_LIFE_TIME               PASSWORD      UNLIMITED PASSWORD_REUSE_TIME              PASSWORD      UNLIMITED PASSWORD_REUSE_MAX               PASSWORD      UNLIMITED PASSWORD_VERIFY_FUNCTION         PASSWORD      NULL PASSWORD_LOCK_TIME               PASSWORD      UNLIMITED PASSWORD_GRACE_TIME              PASSWORD      UNLIMITED 表明： 10次以后，就 failed_login_attempts 就报错，锁定用户。 需要修改成：unlimited sql> alter profile default limit FAILED_LOGIN_ATTEMPTS unlimited; 或修改成：次数比较大：100000 sql>alter profile default limit FAILED_LOGIN_ATTEMPTS 100000； 然后再查看资源情况： SQL> SELECT resource_name,resource_type,limit FROM dba_profiles WHERE profile='DEFAULT'; RESOURCE_NAME                    RESOURCE_TYPE LIMIT -------------------------------- ------------- ---------------------------------------- COMPOSITE_LIMIT                  KERNEL        UNLIMITED SESSIONS_PER_USER                KERNEL        UNLIMITED CPU_PER_SESSION                  KERNEL        UNLIMITED CPU_PER_CALL                     KERNEL        UNLIMITED LOGICAL_READS_PER_SESSION        KERNEL        UNLIMITED LOGICAL_READS_PER_CALL           KERNEL        UNLIMITED IDLE_TIME                        KERNEL        UNLIMITED CONNECT_TIME                     KERNEL        UNLIMITED PRIVATE_SGA                      KERNEL        UNLIMITED FAILED_LOGIN_ATTEMPTS            PASSWORD      UNLIMITED PASSWORD_LIFE_TIME               PASSWORD      UNLIMITED PASSWORD_REUSE_TIME              PASSWORD      UNLIMITED PASSWORD_REUSE_MAX               PASSWORD      UNLIMITED PASSWORD_VERIFY_FUNCTION         PASSWORD      NULL PASSWORD_LOCK_TIME               PASSWORD      UNLIMITED PASSWORD_GRACE_TIME              PASSWORD      UNLIMITED 16 rows selected SQL> 这样就不会用：client端因输入密码错误，造成用户被locked(timed)