To remove a database with toolkit , do the following:
Start toolkit on your database:
c:\> toolkit dbname
Select 6 - Database Menu from the Toolkit Development Menu.
Select M2 - Delete Application From System from the Database Menu.
Enter the name of the database, enter yes to confirm, and press STORE <F5> to remove the database or CANCEL <F1>-X to leave without removing the database.
To remove a database with a command, enter the following:
c:\> dbrm -v dbname
Either method prints a message to warn you what is about to happen. If you decide against removing the database, enter no and nothing is changed.
Should you decide to continue, the command removes all of the logical file definitions from the database catalog. Then it removes the database definition and everything in and below the home directory of the database. Notice that everything in and below the home directory is removed. The command is not overly particular about what gets removed.
Take heed of the warning about backups. Once removed, the only way to restore a database is to restore it from backups or re-enter it.