> 1. a view to all registered users of the server to admin permissions
> for tables, procedures and so on for my database connection

I suspect I understand what you meant here. The list of all users registered
on the server is already available via UserManager. The list of roles,
current object permissions, etc. is available via system tables - there is
no Java interface for this.

> 2. a view to all connected users for statistics to my database connection

The call providing you information about the users that are currently
connected to the database will be available via FirebirdDatabaseMetaData, as
Steven promised.

If that is not enough, then I undertood you wrong.

Roman