If you need to change the password in the database used by the repository owner account (also referred to as the database owner account, and listed as database_owner in the server.ini file), use the following procedure:
Shutdown the repository.
Change the repository owner account password in the database.
Edit the dbpasswd.txt file to contain one line with the new password in plain text.
Encrypt the dbpasswd.txt file. From the $DM_HOME/bin directory, use the command:
dm_encrypt_password -docbase <docbase_name> -rdbms -encrypt <database_password>
Start the repository.