From 46ee42b8162efe29bb38f07f694aafd992bcf4b1 Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Tue, 6 Jul 2010 21:37:31 +0000
Subject: [PATCH] Add note that using PL/Python 2 and 3 in the same session
 will probably crash

---
 doc/src/sgml/plpython.sgml | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/doc/src/sgml/plpython.sgml b/doc/src/sgml/plpython.sgml
index 8b58a95a00..3f924e6cbf 100644
--- a/doc/src/sgml/plpython.sgml
+++ b/doc/src/sgml/plpython.sgml
@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/plpython.sgml,v 1.49 2010/03/29 21:35:59 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/plpython.sgml,v 1.50 2010/07/06 21:37:31 petere Exp $ -->
 
 <chapter id="plpython">
  <title>PL/Python - Python Procedural Language</title>
@@ -152,6 +152,15 @@
    New In Python 3.0</ulink> for more information about porting to
    Python 3.
   </para>
+
+  <para>
+   On most (possibly all) platforms, it is not possible 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 will
+   clash, which will result in crashes of the PostgreSQL server
+   process.  It is possible, however, to use both PL/Python variants
+   in the same database, from separate sessions.
+  </para>
  </sect1>
 
  <sect1 id="plpython-funcs">
-- 
2.40.0