Use
You can operate the Oracle database in restricted session mode. This means that only users with a specific access privilege – usually database administrators – can log onto the database.
You can use SAPDBA to check the current database mode and change it if necessary.
Prerequisites
Procedure
SAPDBA displays the current database mode, normally RESTRICTED MODE: Disabled.
SAPDBA switches the database to restricted mode, first checking whether the
When you exit SAPDBA, it checks the database mode. If you have been working in restricted session mode, SAPDBA asks if you want to change the mode to normal, so enabling other users to log onto the database.