Alvaro Herrera wrote: > On Thu, Aug 11, 2005 at 03:36:31PM -0500, John A Meinel wrote: > >>I'm having an odd case where my system is locking such that if I insert >>into a table during a transaction, if I start a new connection and >>transaction, it blocks while trying to do a similar insert until the >>first transaction is committed or rolled back. > > > Are there foreign keys here? I can duplicate the problem easily with > them: > > -- session 1 > create table a (a serial primary key); > create table b (a int references a); > insert into a values (1); > > begin; > insert into b values (1); > > > -- session 2 > insert into b values (1); > -- hangs >
Actually, there are but the insert is occurring into table 'a' not table 'b'. 'a' refers to other tables, but these should not be modified. > > If I commit on session 1, session 2 is unlocked. > > This is a known problem, solved in 8.1. A workaround for previous > releases is to defer FK checks until commit: > > create table b (a int references a initially deferred); I'll try one of the CVS entries and see if it happens there. Good to hear there has been work done. John =:-> >
signature.asc
Description: OpenPGP digital signature
