El mar, 29-12-2009 a las 15:44 -0500, Merlin Moncure escribió: > right. IIRC the zeos library has a transaction mode that controls if > commits are explicit or invoked via the library commit method. either > way, you you need to make sure that transactions are not left > open...this can lead (as you noticed) to unexpected problems like > blocking queries, performance problems, data loss, etc. > > if you notice the slow ddl issue again, throw an immediate select * > from pg_locks and look for granted = f. If you find some and they > match your pid, then you know that you have a transaction open that is > blocking you. From there, it's just a matter if using pg_locks and > pg_stat_activity to narrow down who/what is doing it. You should > especially take note of 'idle in transaction' in > pg_stat_activity...this is classic red flag of leaky application code. > > merlin
I did the Select * from pg_locks right after your answer, and found that almost all locks originated by my app have "granted = t", also, all are in "<IDLE> in transaction". The interesting thing is the app is doing only Selects, without opening transactions. -- Leonardo M. Ramé Griensu S.A. - Medical IT Córdoba Tel.: 0351-4247979 -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
