On Tuesday 23 May 2006 17:54, Tom Lane wrote: > Andreas Joseph Krogh <[EMAIL PROTECTED]> writes: > > I've experienced several times that PG has died somehow and the > > postmaster.pid file still exists 'cause PG hasn't had the ability to > > delete it upon proper shutdown. Upon start-up, after such an incidence, > > PG tells me another PG is running and that I either have to shut down the > > other instance, or delete the postmaster.pid file if there really isn't > > an instance running. This seems totally unnecessary to me. > > The postmaster does check to see whether the PID mentioned in the file > is still alive, so it's not that easy for the above to happen. If you > can provide details of a scenario where a failure is likely, we'd like > to know about it. Also, what PG version are you talking about?
I have experienced this with PG-8.1.3 and will provide details if I can make it happen. Basically it has happened when I have had to "hard-reset" my laptop due to some strange bugs in Linux which have made it hang. > > Why doesn't PG use file-locking to tell if another > > PG is running or not? > > Portability. Ok. -- Andreas Joseph Krogh <[EMAIL PROTECTED]> Senior Software Developer / Manager gpg public_key: http://dev.officenet.no/~andreak/public_key.asc ------------------------+---------------------------------------------+ OfficeNet AS | The most difficult thing in the world is to | Hoffsveien 17 | know how to do a thing and to watch | PO. Box 425 Skøyen | somebody else doing it wrong, without | 0213 Oslo | comment. | NORWAY | | Phone : +47 22 13 01 00 | | Direct: +47 22 13 10 03 | | Mobile: +47 909 56 963 | | ------------------------+---------------------------------------------+ ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
