the account is locked

Problem Description

This error occurs because Oracle has entered the wrong password many times or the installation has not modified something.

solution

1. Win+R to open the command line and enter: sqlplus, or use sqlplus / as sysdba; no password is required.

Use the system or sys account to log in, and the password is the administrative password entered during Oracle installation.

2. Suppose the account we want to unlock is scott

alter user scott account unlock

3. Change the password to avoid being locked again

alter user username identified by password

Among them, username is the user name (such as: scott), and password is the new password.
By the way, the solution for forgetting to put a semicolon: just put a semicolon in the next line, as shown in the figure

4. Restart the service or client (depending on whether you are a desktop version or a server version), it is finished