Do not log in or log in to solve the problem that the Oracle database account is locked.

 Sign in Oracle Prompt when ORA-28000: the account is locked;

The reason for this is ：
More than three unsuccessful connections will automatically lock the account .

Solution ：

1. Login administrator account solution ：
   Using the account ：system password ：manager Sign in sysdba, Then use the administrator to modify the locking state of the user
   alter user The name of the locked account account unlock;
2. Do not log in to the solution ：
   open cmd command , Use sqlplus /nolog; No login status to enter
   then connect / as sysdba Use administrator identity
   Last contact locking ：alter user The name of the locked account account unlock;