I am trying to upgrade a database from postgresql 8.3.8 to 9.1. (Ubuntu 10.10 Maverick) It is crashing out with the following error: Adding support functions to new cluster ok Restoring database schema to new cluster "/usr/lib/postgresql/9.1/bin/psql" --set ON_ERROR_STOP=on --no-psqlrc --port 5435 --username "postgres" -f "/var/lib/postgresql/pg_upgrade_dump_db.sql" --dbname template1 >> "/dev/null" psql:/var/lib/postgresql/pg_upgrade_dump_db.sql:85146: ERROR: could not find function "pg_freespacemap_pages" in file "/usr/lib/postgresql/9.1/lib/pg_freespacemap.so" The code at line 85146 is as follows: CREATE FUNCTION pg_freespacemap_pages() RETURNS SETOF record LANGUAGE c AS '$libdir/pg_freespacemap', 'pg_freespacemap_pages'; Why does this happen? Any hints how this can be fixed? As a work around, is it safe to create this function in 9.1 and how do I do that? Help! Thanks in advance... -- View this message in context: http://postgresql.1045698.n5.nabble.com/pg-upgrade-error-when-migrating-from-8-3-to-9-1-tp5146289p5146289.html Sent from the PostgreSQL - admin mailing list archive at Nabble.com. -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin