Oracle Scott account is locked, scott default password, sys,system default password __oracle

Oracle account Scott locked down how to unlock the specific operation steps are as follows: C:> sqlplus enter username: sys Enter password: SYS as SYSDBA//NOTE: The password entered here in the password must be followed by as SYSDBA.       sql> alter user Scott account unlock;  The user has changed.       Sql> commit;  Submit completed.  Sql> Conn Scott/tiger Change the Scott password new password: Tiger Retype the new password: Tiger password has changed connected. Scott default password Tiger SYSTEM account default password: 1, please enter user name: SYS Enter password: SYS as SYSDBA//Note: Enter 2, Sql>alter user system identified by mana in the password Ger Hint system is locked 3, Sql>alter user system account unlock; 4, sql>commit; 5, Sql>conn System/manager