Hi Laurenz, Thanks for the response.
> > > > I believe one of the following approaches should be considered to prevent > > such failures: > > > > 1. Restrict the creation of user objects within the `pg_catalog` schema. > > That's already the case: > > test=# CREATE TABLE pg_catalog.new (); > ERROR: permission denied to create "pg_catalog.new" > DETAIL: System catalog modifications are currently disallowed. > > I'm able to create the object as shown in the below: postgres=# CREATE OR REPLACE FUNCTION pg_catalog.nont_ext_func() RETURNS char AS $$ BEGIN return 'v'; END; $$ LANGUAGE plpgsql; CREATE FUNCTION Why can't we strictly restrict object creation in pg_catalog? Thanks, Vaibhav