Information
The SYSIBM.SYSPLANAUTH table contains the package privileges granted to the user or a group of users. It is recommended that the PUBLIC role be restricted from accessing this table.
Rationale:
The list of all users with access to a package should not be exposed to the public.
Solution
Perform the following to revoke access from PUBLIC.
Connect to the Db2 database.
db2 => connect to <dbname>
Run the following command:
db2 => REVOKE SELECT ON SYSIBM.SYSPLANAUTH FROM PUBLIC