Sean Kelly ([EMAIL PROTECTED]) writes: > isp=> update domain_tbl set max_email='15' where domain='test.domain'; > pqReadData() -- backend closed the channel unexpectedly. Can't tell much of anything from this. Can you provide a gdb backtrace from the corefile that the failed backend presumably left? It should be in $PGDATA/base/isp/core. If you don't see a corefile there, you may need to restart the postmaster with "ulimit -c unlimited" to allow core dumping. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html