Sean Kelly (lists(at)shortestpath(dot)org) 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