Oracle10g Profile FAILED_LOGIN_ATTEMPTS
Oracle Database 10g在缺省用户管理上有个小的改进，就是FAILED_LOGIN_ATTEMPTS的口令失败尝试变成了10次，这个设置的确有点问题。如果有一个用户不停尝试错误口令，那就会导致用户被锁。
如果恢复之前无限制，可以通过一条命令解决：
alter profile default limit FAILED_LOGIN_ATTEMPTS unlimited;
SQL> select * from dba_profiles;
PROFILE RESOURCE_NAME RESOURCE LIMIT
---------------- -------------------------------- -------- ------------------------------
DEFAULT COMPOSITE_LIMIT KERNEL UNLIMITED
DEFAULT SESSIONS_PER_USER KERNEL UNLIMITED
DEFAULT CPU_PER_SESSION KERNEL UNLIMITED
DEFAULT CPU_PER_CALL KERNEL UNLIMITED
DEFAULT LOGICAL_READS_PER_SESSION KERNEL UNLIMITED
DEFAULT LOGICAL_READS_PER_CALL KERNEL UNLIMITED
DEFAULT IDLE_TIME KERNEL UNLIMITED
DEFAULT CONNECT_TIME KERNEL UNLIMITED
DEFAULT PRIVATE_SGA KERNEL UNLIMITED
DEFAULT FAILED_LOGIN_ATTEMPTS PASSWORD 10
DEFAULT PASSWORD_LIFE_TIME PASSWORD UNLIMITED
PROFILE RESOURCE_NAME RESOURCE LIMIT
---------------- -------------------------------- -------- ------------------------------
DEFAULT PASSWORD_REUSE_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_REUSE_MAX PASSWORD UNLIMITED
DEFAULT PASSWORD_VERIFY_FUNCTION PASSWORD NULL
DEFAULT PASSWORD_LOCK_TIME PASSWORD UNLIMITED
DEFAULT PASSWORD_GRACE_TIME PASSWORD UNLIMITED