I have both 9.0 and 9.1 installed in Centos 6: postgresql90.x86_64 9.0.7-1PGDG.rhel6 @pgdg90 postgresql90-docs.x86_64 9.0.7-1PGDG.rhel6 @pgdg90 postgresql90-libs.x86_64 9.0.7-1PGDG.rhel6 @pgdg90 postgresql90-odbc.x86_64 09.00.0310-1PGDG.rhel6 @pgdg90 postgresql90-plpython.x86_64 9.0.7-1PGDG.rhel6 @pgdg90 postgresql90-server.x86_64 9.0.7-1PGDG.rhel6 @pgdg90 postgresql91.x86_64 9.1.3-1PGDG.rhel6 @pgdg91 postgresql91-libs.x86_64 9.1.3-1PGDG.rhel6 @pgdg91 postgresql91-plpython.x86_64 9.1.3-1PGDG.rhel6 @pgdg91 postgresql91-server.x86_64 9.1.3-1PGDG.rhel6 @pgdg91
There is this thread: http://archives.postgresql.org/pgsql-admin/2011-09/msg00101.php My ldconfig output is a bit different: $ ldconfig -p | grep pq libpqwalreceiver.so (libc6,x86-64) => /usr/pgsql-9.0/lib/libpqwalreceiver.so libpqwalreceiver.so (libc6,x86-64) => /usr/pgsql-9.1/lib/libpqwalreceiver.so libpq.so.5 (libc6,x86-64) => /usr/pgsql-9.0/lib/libpq.so.5 libpq.so.5 (libc6,x86-64) => /usr/pgsql-9.1/lib/libpq.so.5 libipq.so.0 (libc6,x86-64) => /lib64/libipq.so.0 Is there a clean solution to have both versions working? Regards, Clodoaldo