Restricting access to data
You can restrict access to data with an option of the START DB2 command.
Procedure

Issue the START DB2 command with one
of the following options:
- ACCESS(MAINT)
- To limit access to users who have installation SYSADM or installation
SYSOPR authority.
Users with those authorities can do maintenance operations such as recovering a database or taking image copies. To restore access to all users, stop DB2® and then restart it, either omitting the ACCESS keyword or specifying ACCESS(*).
- ACCESS(*)
- To allow all authorized users to connect to DB2.
