[PERFORM] postgresql-9.0 Windows service stops after database transaction

[adrian.ki...@dse.vic.gov.au]

Hi all

I've have a strange problem with my Windows postgresql-9.0 service stopping after any transaction which manipulates tables in any database (Deleting records, Inserting records, bulk importing via \copy, etc). This problem occurs regardless whether I'm accessing the database server via pgAdmin III on a client machine or the server itself as well as through the command prompt. The end result it that I have to constantly restart the postgresql service after any transactions. Sometime there is a slight delay allowing a couple of transactions but the service is always eventually stopped.

The problem appears to have started when I changed permissions on my machine to allow the user 'postgres' access to the C drive following the instructions in the last post of this thread:
http://www.jitterbit.com/PhpBB/viewtopic.php?f=5&t=869

The specs of postres environment are:

• Windows XP SP3
• PostgreSQL 9.0.0, compiled by Visual C++ build 1500, 32-bit
• pgAdmin III 1.12.0 (Sep17 2010, rev: REL-1_12_0)
• PostGIS 2.0SVN

Hope someone can shed some light on this issue.

Cheers

Adrian

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[Thom Brown]

On 24 September 2010 05:39, <adrian.ki...@dse.vic.gov.au> wrote:
> Hi all
>
> I've have a strange problem with my Windows postgresql-9.0 service stopping
> after any transaction which manipulates tables in any database (Deleting
> records, Inserting records, bulk importing via \copy, etc). This problem
> occurs regardless whether I'm accessing the database server via pgAdmin III
> on a client machine or the server itself as well as through the command
> prompt. The end result it that I have to constantly restart the postgresql
> service after any transactions. Sometime there is a slight delay allowing a
> couple of transactions but the service is always eventually stopped.
>
> The problem appears to have started when I changed permissions on my machine
> to allow the user 'postgres' access to the C drive following the
> instructions in the last post of this thread:
> http://www.jitterbit.com/PhpBB/viewtopic.php?f=5&t=869
>
> The specs of postres environment are:
>
> Windows XP SP3
> PostgreSQL 9.0.0, compiled by Visual C++ build 1500, 32-bit
> pgAdmin III 1.12.0 (Sep17 2010, rev: REL-1_12_0)
> PostGIS 2.0SVN
>
> Hope someone can shed some light on this issue.

What appears in the logs?

--
Thom Brown
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Registered Linux user: #516935

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[adrian.ki...@dse.vic.gov.au]

Hi again Thom

Just a quick update regarding my previous reply to you. I managed to do a deeper uninstall of Postgresql 8.3 with these following steps.

* Remove the Registry entries. (HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Installations\postgresql-8.3) and (HKEY_LOCAL_MACHINE\SOFTWARE\PostgreSQL\Services\postgresql-8.3)
* Remove the postgresql-8.3 service. (sc delete postgresql-8.3)

This didn't fix the problem although the 8.3 service is now no longer present in Windows Services nor in pgAdmin. Below is the complete log output when the original error occurs and the 9.0 service is shut down. All I did was delete the content of a table and this is what happens.

2010-09-27 09:52:48 EST LOG:  unexpected EOF on client connection
2010-09-27 09:53:05 EST LOG:  unexpected EOF on client connection
2010-09-27 09:53:19 EST LOG:  server process (PID 2564) was terminated by exception 0xC0000005
2010-09-27 09:53:19 EST HINT:  See C include file "ntstatus.h" for a description of the hexadecimal value.
2010-09-27 09:53:19 EST LOG:  terminating any other active server processes
2010-09-27 09:53:19 EST WARNING:  terminating connection because of crash of another server process
2010-09-27 09:53:19 EST 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.
2010-09-27 09:53:19 EST HINT:  In a moment you should be able to reconnect to the database and repeat your command.
2010-09-27 09:53:19 EST WARNING:  terminating connection because of crash of another server process
2010-09-27 09:53:19 EST 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.
2010-09-27 09:53:19 EST HINT:  In a moment you should be able to reconnect to the database and repeat your command.
2010-09-27 09:53:19 EST WARNING:  terminating connection because of crash of another server process
2010-09-27 09:53:19 EST 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.
2010-09-27 09:53:19 EST HINT:  In a moment you should be able to reconnect to the database and repeat your command.
2010-09-27 09:53:19 EST LOG:  all server processes terminated; reinitializing
2010-09-27 09:53:29 EST FATAL:  pre-existing shared memory block is still in use
2010-09-27 09:53:29 EST HINT:  Check if there are any old server processes still running, and terminate them.

Thanks again.

Cheers

Adrian



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Adrian Kitchingman, Aquatic Spatial Scientist | Arthur Rylah Institute, Dept of Sustainability and Environment
123 Brown St, Heidelberg, Victoria, Australia, 3084 | ph: + (03) 9450 8716 | fax: + (03) 9450 8799
~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <°)))>< ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[adrian.ki...@dse.vic.gov.au]

Hi Thom

Thanks for the reply and the log seems to have shed some light. Looks like I have my old postgres 8.3 service still running concurrently which is interfering with the new 9.0 service. This is the message that comes up a lot in the log.

2010-09-24 15:39:34 EST LOG:  unexpected EOF on client connection
2010-09-24 15:39:37 EST LOG:  unexpected EOF on client connection
2010-09-24 15:39:37 EST LOG:  unexpected EOF on client connection
2010-09-24 15:40:07 EST LOG:  server process (PID 3724) was terminated by exception 0xC0000005
2010-09-24 15:40:07 EST HINT:  See C include file "ntstatus.h" for a description of the hexadecimal value.
2010-09-24 15:40:07 EST LOG:  terminating any other active server processes
2010-09-24 15:40:07 EST WARNING:  terminating connection because of crash of another server process
2010-09-24 15:40:07 EST 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.
2010-09-24 15:40:07 EST HINT:  In a moment you should be able to reconnect to the database and repeat your command.

It's a bit strange though because I did do an uninstall of the postgres 8.3 before installing the 9.0. The 8.3 service is still present in Windows Services but I've disabled with with no effect on the problem. I notice it still is also listed as a separate server in pgAdmin but when it's activated it refers to the 9.0 databases. I'm guessing that I have to do a deeper uninstall of the 8.3 service. Do you have any pointers on how to go about this?

Cheers

Adrian

From:        Thom Brown <th...@linux.com>
To:        adrian.ki...@dse.vic.gov.au
Cc:        pgsql-pe...@postgresql.org
Date:        24/09/2010 05:05 PM
Subject:        Re: [PERFORM] postgresql-9.0 Windows service stops after database transaction

---

[Craig Ringer]

On 27/09/10 08:06, adrian.ki...@dse.vic.gov.au wrote:
>
> /2010-09-27 09:53:19 EST LOG: server process (PID 2564) was terminated
> by exception 0xC0000005/
> /2010-09-27 09:53:19 EST HINT: See C include file "ntstatus.h" for a
> description of the hexadecimal value./

That's an access violation - in UNIX land, a segmentation fault, signal
11. A plain 'ol crash of a backend.

It'd be really nice to have some information about how it crashed. It'd
be ideal if you could make a .sql file that, when run on a newly created
database, creates a table and manipulates it in a way that causes the
backend to crash. Please do not add PostGIS to the test database. If you
cannot make it crash without PostGIS in the mix, that tells us something.

If you can make it crash without PostGIS, please post the .sql file that
creates the table(s) and runs the command that crashes the server.

If you have to add PostGIS to make it crash, it might be best to talk to
the PostGIS folks about the problem.

In either case, to make things even better you could collect some crash
information that may help diagnose where in PostgreSQL the crash occurs.
See:

http://wiki.postgresql.org/wiki/Getting_a_stack_trace_of_a_running_PostgreSQL_backend_on_Windows

By the way: You don't have the old 8.3 data directory on the system PATH
do you? You can check the value of the system path in the System control
panel, though exactly where varies from Windows version to Windows version.

--
Craig Ringer

Tech-related writing: http://soapyfrogs.blogspot.com/

[adrian.ki...@dse.vic.gov.au]

Hi all

Looks like Craig is right in suspecting that the PostGIS installation was causing the problem. I did a full reinstall of Postgres and ran it without PostGIS with no problems. For those interested, the bug has been noted on the PostGIS bugs list but yet to have a fix.
http://trac.osgeo.org/postgis/ticket/518

Thanks for the help.

Cheers

Adrian


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Adrian Kitchingman, Aquatic Spatial Scientist | Arthur Rylah Institute, Dept of Sustainability and Environment
123 Brown St, Heidelberg, Victoria, Australia, 3084 | ph: + (03) 9450 8716 | fax: + (03) 9450 8799
~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <°)))>< ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~