Is there a script I can run that will reset all the passwords and unlock the required accounts?

I am getting this error:
ORDS was unable to make a connection to the database. This can occur if the database is unavailable, the maximum number of sessions has been reached or the pool is not correctly configured. The connection pool named: |default|lo| had the following error(s): ORA-28000: The account is locked.

last time I started again, but would be good if I could fix this install.