George Weaver <gweaver@xxxxxxx> writes: > I am testing upgrading from Version 13 to Version 17. I am getting the > following error when trying to restore a database in Version 17 (the > database was backed up from Version 13 using the Version 17 pg_dump): > pg_Restore: error: could not execute query: ERROR: could not find > function "xml_is_well_formed" in file "C:/Program > Files/PostgreSQL/17/lib/pgxml.dll" > Command was: CREATE FUNCTION public.xml_is_well_formed(text) RETURNS > boolean > LANGUAGE c IMMUTABLE STRICT > AS '$libdir/pgxml', 'xml_is_well_formed'; What you appear to have here is a pre-9.1 version of the xml2 extension. That is so old that you're going to have difficulty modernizing it. We used to provide scripts for converting those loose objects into extensions, but we got rid of them in v13, figuring that after ten years their usefulness had passed. I think what you will have to do is manually drop all the xml2 functions (look for pg_proc entries with '$libdir/pgxml' in probin) from the v13 database, then upgrade, then install the xml2 extension if you still want it. Fortunately that module only provided functions not datatypes, so this shouldn't be too painful. (Another way could be to manually remove those CREATE FUNCTION commands from the dump script.) I'm betting that this database has a lot of other deferred maintenance that you ought to think about while you're at it. If there are any other old-style extensions in there, better fix them up. regards, tom lane
