SQL> SELECT * FROM dba_profiles s WHERE s.profile='DEFAULT' AND resource_name='FAILED_LOGIN_ATTEMPTS';

PROFILE
------------------------------------------------------------
RESOURCE_NAME
----------------------------------------------------------------
RESOURCE_TYPE
----------------
LIMIT
--------------------------------------------------------------------------------
DEFAULT
FAILED_LOGIN_ATTEMPTS
PASSWORD
10


SQL> ALTER PROFILE DEFAULT LIMIT FAILED_LOGIN_ATTEMPTS UNLIMITED;

Profile altered.

alter user 账号 account unlock;