VACUMM problem

[Marek Dabrowski <marek.dabrowski@xxxxxxxx>]

Hello

I didn't do VACUUM long time and now I have problem:

WARNING:  some databases have not been vacuumed in over 2 billion 
transactions
DETAIL:  You may have already suffered transaction-wraparound data loss.

What I have to do to resolve this problem?

Regards
Marek