Oracle User Locked Solution ____oracle

Workaround:
1. Login with DBA role;
2, enter the following format command unlock:
Alter user username account unlock;
3, if the password forgotten, enter the following format command to modify the password:
Alter user username identified by new password;

The following is an example of unlocking user dev and modifying the password to 123456
---------------------------------------------------------

C:\users\lc>set Oracle_sid=testdb
C:\users\lc>sqlplus/nolog
Sql*plus:release 11.2.0.1.0 Production on Friday January 12 12:07:31 2018
Copyright (c) 1982, Oracle. All rights reserved.
Sql> Conn/as SYSDBA
is connected.
sql> alter user dev account unlock;
The user has changed.
sql> alter user Dev identified by 123456;
The user has changed.
sql> alter user dev account unlock;
The user has changed.