Oracle数据库用户的密码过期时间如何修改为永不过期

SELECT * FROMdba_profiles s WHERE s.profile='DEFAULT' ANDresource_name='PASSWORD_LIFE_TIME';SELECT * FROMdba_profiles s ;--查看用户profileselect username, user_id, account_status,expiry_date, profile from dba_users where username = 'MESSERIES';--1. 创建新的profile（PASSWD_UNLIMIT）复制DEFAULT的ScriptCREATE PROFILE "PASSWD_UNLIMIT" LIMIT SESSIONS_PER_USER UNLIMITED CPU_PER_SESSION UNLIMITED CPU_PER_CALL UNLIMITED CONNECT_TIME UNLIMITED IDLE_TIME UNLIMITED LOGICAL_READS_PER_SESSION UNLIMITED LOGICAL_READS_PER_CALL UNLIMITED COMPOSITE_LIMIT UNLIMITED PRIVATE_SGA UNLIMITED FAILED_LOGIN_ATTEMPTS 10 PASSWORD_LIFE_TIME 180 PASSWORD_REUSE_TIME UNLIMITED PASSWORD_REUSE_MAX UNLIMITED PASSWORD_LOCK_TIME 1 PASSWORD_GRACE_TIME 7 PASSWORD_VERIFY_FUNCTION NULL;SELECT * FROMdba_profiles;--2. 修改新建的profile（PASSWD_UNLIMIT），密码过期为不过期ALTER profilePASSWD_UNLIMIT limit PASSWORD_LIFE_TIME UNLIMITED;--3. 修改用户的Profile为新的profilealter user MESSERIES profile PASSWD_UNLIMIT;