On Friday 13 March 2009, emsa@xxxxxxxxxx wrote: > Hi, > > I have a serious issue with delete from. > > When I do something like: > > "delete from CALC_INVOICE_DATA where PERIOD_END>='2011-01-01'" > > the postmaster takes 100% CPU and then nothing happens. > Some possibilities: 1) If it's using 100% CPU for a long period of time, you might have a foreign key relationship to this table, and the key in the other (largish, but not larger than RAM) table is not indexed, which is resulting in a seq scan in cache for every row being deleted. 2) You have another on delete trigger that is expensive to run. 3) Some other backend is really using the 100% CPU and your delete is just waiting for a lock on the table and not doing anything. -- Even a sixth-grader can figure out that you can’t borrow money to pay off your debt -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
