The server has 4GB of memory and is not running any other services - so
i wouldn't expect there to be memory shortage problems.
The gdb output yesterday was from a postmaster running from the default
postgresql.conf
I have since changed the kernel settings to allow 1GB of shared mem and
changed shared_buffers in postgresql.conf to request just under that.
The core dump for the higher memory alloaction gives identical output
to the one i posted yesterday.
Thank you for you assistance,
Mat
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