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From: Ferrell, Denise SDC <denise.ferrell@sdc-world.com>
To: pgsql-admin@postgresql.org <pgsql-admin@postgresql.org>
Subject: Data Corruption Errors
Date: Thu, 27 Sep 2018 12:39:33 +0000
Message-ID: <1538051973729.67553@sdc-world.com> (raw)
In-Reply-To: <64b2d16e-6c7c-002a-1e16-209a3ae43bef@2ndquadrant.com>
References: <CAFwQ8rdGB-jUPtrDXpp-gMgS8guWg8SWSkBjkXy0San3rmvj8w@mail.gmail.com>
	<64b2d16e-6c7c-002a-1e16-209a3ae43bef@2ndquadrant.com>

Using Linux/PostgreSQL 9.5 &  setup on a VM.

I'm receiving the following errors during an insert using a function but this does not happen every time.  When this does occur the database/system is unavailable until the processes are killed or the service is restarted.

"LOG:  server process (PID xxxxx) was terminated by signal 9:  Killed
DETAIL: Failed process was running
   select insert_data ($1, $2,....)
WARNING:  terminating connection because of crash of another server process
DETAIL:  The postmaster has commanded this server process to roll back the current transaction and exit, because another server process exited abnormally and possibly corrupted shared memory.
HINT:  In a moment you should be able to reconnect ....
LOG:  connection received                                                        
FATAL:  the database system is in recovery mode"

The last 2 lines are repeated and logging is not available.
                
How can I determine data/table/shared memory corruption?  

Thank you in advance for your responses.

D. Ferrell



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