couldn't set uid - message in fbembed linux

Dear Members ,

My application has embedded firebird db. When I connect db through classic libraries in linux , I get a messages that "lock manager: couldn't set uid to superuser". I get this messages when i make multiple connection in my firebird embedded application. I get this message only in linux,

When I run my application in super user (root) there no such messages. I hope firebird tries to set super user id for lock manager. If this operation fails , in turn does it harm the behaviour of firebird.
But my application runs without any problem in user login. It just logs the message. Is this message harmless.? Please do clarify me what is the significance of this message so that I can fix the same in my fb embedded application?

With thanks & regards,
S.Karthick