Re: Re: Postgres 9.4.4/9.4.6: plpython2/3 intallation issues on a Windows 7 machine

From: Alex Ignatov <a(dot)ignatov(at)postgrespro(dot)ru>
To: margrit drescher <margrit2103(at)gmail(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: Re: Postgres 9.4.4/9.4.6: plpython2/3 intallation issues on a Windows 7 machine
Date: 2016-03-31 12:49:28
Message-ID: 56FD1CD8.4090307@postgrespro.ru
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May be this would be the cause of you issue:
http://www.postgresql.org/docs/9.2/static/plpython-python23.html

It is not allowed to use PL/Python based on Python 2 and PL/Python based
on Python 3 in the same session, because the symbols in the dynamic
modules would clash, which could result in crashes of the PostgreSQL
server process. There is a check that prevents mixing Python major
versions in a session, which will abort the session if a mismatch is
detected. It is possible, however, to use both PL/Python variants in the
same database, from separate sessions.

On 31.03.2016 12:53, margrit drescher wrote:
> I originally used the 9.4.6 version on
> http://www.enterprisedb.com/products-services-training/pgdownload#windows
> for 64-bit windows and loaded the language pack recommended in the
> readme file.
>
> On 31 March 2016 at 11:25, Alex Ignatov-2 [via PostgreSQL] <[hidden
> email] </user/SendEmail.jtp?type=node&node=5896177&i=0>> wrote:
>
>
>
> On 31.03.2016 10:50, margrit drescher wrote:
>
> > I installed postgres 9.4.6 on my Windows 7 (64-bit) machine, and
> managed to
> > create the plpython3u extension without a problem.
> >
> > I then restored an existing DB (created in postgres 9.3). The
> plpython3
> > functions restored without a hitch and can execute.
> >
> >
> > However, as soon as I try to create a NEW plpython3 function on
> the db the
> > postgres service terminates and does an auto-recovery.
> >
> > I then downgraded to postgres 9.4.4 and am still encountering
> the same
> > issue.
> >
> >
> >
> > Example:
> >
> > When running the following code:
> >
> > "create function test() returns void as $$ plpy.notice( 'xxx' );
> $$ language
> > plpython3u"
> >
> >
> > the following is generated in the log:
> >
> > "
> > 2016-03-31 09:36:56 CAT LOG: server process (PID 6376) exited
> with exit
> > code 3
> > 2016-03-31 09:36:56 CAT DETAIL: Failed process was running:
> create
> > function test() returns void as $$ plpy.notice( 'xxx' ); $$
> language
> > plpython3u
> > 2016-03-31 09:36:56 CAT LOG: terminating any other active
> server processes
> > 2016-03-31 09:36:56 CAT WARNING: terminating connection because
> of crash of
> > another server process
> > 2016-03-31 09:36:56 CAT 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.
> > 2016-03-31 09:36:56 CAT HINT: In a moment you should be able to
> reconnect
> > to the database and repeat your command.
> > 2016-03-31 09:36:56 CAT WARNING: terminating connection because
> of crash of
> > another server process
> > 2016-03-31 09:36:56 CAT 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.
> > 2016-03-31 09:36:56 CAT HINT: In a moment you should be able to
> reconnect
> > to the database and repeat your command.
> > 2016-03-31 09:36:56 CAT WARNING: terminating connection because
> of crash of
> > another server process
> > 2016-03-31 09:36:56 CAT 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.
> > 2016-03-31 09:36:56 CAT HINT: In a moment you should be able to
> reconnect
> > to the database and repeat your command.
> >
> > "
> >
> > I am guessing that my problem might have something to do with
> the fact that
> > the plpython2u language is not installed on the DB - although I
> am not sure
> > why it should it need it, when executing a plpython3 command. As I
> > understand it, Postgres 9.4 accomodates both versions of python.
> However I
> > have not been able to figure out how to load plpython2u onto the
> db. The
> > postgres version I installed does not ship with plpython2.dll
> and I have not
> > been able to get hold of a copy. ( Python 2.7 /3.2 and 3.3 are
> installed on
> > my machine, and I am running postgre versions 9.2, 9.3 and
> 9.4.4 on
> > different ports).
> >
> >
> >
> >
> >
> > --
> > View this message in context:
> http://postgresql.nabble.com/Postgres-9-4-4-9-4-6-plpython2-3-intallation-issues-on-a-Windows-7-machine-tp5896157.html
> > Sent from the PostgreSQL - general mailing list archive at
> Nabble.com.
> >
> >
> Hello!
> What postgres distr for Win are you using?
>
> --
> Alex Ignatov
> Postgres Professional: http://www.postgrespro.com
> The Russian Postgres Company
>
>
>
> --
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--
Alex Ignatov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company

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