Postgres database crash when installing plpython

Question

I'm trying to install plpython in my Postgres 9.1 but it crashes the server:

postgres@dataserver1:~> /opt/postgres/9.1/bin/psql -d mydb
psql.bin (9.1.4)
Type "help" for help.

mydb=# create language 'plpythonu';
The connection to the server was lost. Attempting reset: Failed.

I have python 2.6.8 installed and the handler is correcty declared in the system:

select tmplname, tmplhandler, tmpllibrary from pg_pltemplate where tmplname like 'plpython%'

"plpythonu"  | "plpython_call_handler"  | "$libdir/plpython2"
"plpython2u" | "plpython2_call_handler" | "$libdir/plpython2"

And the handler is installed in the $libdir:

postgres@dataserver1:~> ll /opt/postgres/9.1/lib/postgresql/plpython*
-rwxr-xr-x 1 root root 6686333 Aug 17 14:27 /opt/postgres/9.1/lib/postgresql/plpython2.so

Any clues on this will be apreciated

EDIT

I've tried create extension plpythonu, plpython2u, and plpython3u and all of them crashes the server.

Reading a little in the docs I found the \dx command to list the installed extensions:

mydb=# \dx
                 List of installed extensions
  Name   | Version |   Schema   |         Description
---------+---------+------------+------------------------------
 plpgsql | 1.0     | pg_catalog | PL/pgSQL procedural language
(1 row)

So I guess the only installed extension is plpgsql.

mydb=# select name, installed_version from pg_available_extensions where name like '%python%';
    name    | installed_version
------------+-------------------
 plpython2u |
 plpython3u |
 plpythonu  |
(3 rows)

and my extension directory:

postgres@dataserver1:/opt/postgres/9.1/share/postgresql/extension> ll *python*
-rw-r--r-- 1 root root 351 Aug 20 17:32 plpython2u--1.0.sql
-rw-r--r-- 1 root root 196 Aug 20 17:32 plpython2u.control
-rw-r--r-- 1 root root 402 Aug 20 17:32 plpython2u--unpackaged--1.0.sql
-rw-r--r-- 1 root root 351 Jun  1 02:54 plpython3u--1.0.sql
-rw-r--r-- 1 root root 196 Jun  1 02:54 plpython3u.control
-rw-r--r-- 1 root root 402 Jun  1 02:54 plpython3u--unpackaged--1.0.sql
-rw-r--r-- 1 root root 347 Aug 20 17:32 plpythonu--1.0.sql
-rw-r--r-- 1 root root 194 Aug 20 17:32 plpythonu.control
-rw-r--r-- 1 root root 393 Aug 20 17:32 plpythonu--unpackaged--1.0.sql

EDIT

I'm running on Linux SuSE, but got your point.

In my postgres instalation, the pl-lang libraries are in .../postgres/9.1/lib/postgres. Inside it there are plpython2.so and plpython3.so

Checking the dynamic linked libraries of these files:

alfonso@dataserver1:/opt/postgres/9.1/lib/postgresql> sudo ldd plpython2.so
        linux-vdso.so.1 =>  (0x00007fff5e945000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f64064df000)
        libdl.so.2 => /lib64/libdl.so.2 (0x00007f64062da000)
        libutil.so.1 => /lib64/libutil.so.1 (0x00007f64060d7000)
        libm.so.6 => /lib64/libm.so.6 (0x00007f6405e5e000)
        libc.so.6 => /lib64/libc.so.6 (0x00007f6405ae9000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f6406b2e000)

There is no reference to any python library, neither for plpython3.so

But I have installed python 2.6 and python 3.2. Note that I wish to install the extension for python 2.

And yes, CREATE EXTENSION is still crashing:

mydb=# create extension plpython2u;
The connection to the server was lost. Attempting reset: Failed.
!> \q

Postgres database crash when installing plpython

2 Answers