Ayush Vatsa <ayushvatsa1810@xxxxxxxxx> writes: > postgres=> SELECT pg_prewarm('pg_class_oid_index'); > ERROR: permission denied for index pg_class_oid_index You'd really have to take that up with the author of pg_prewarm. It's not apparent to me why checking SQL access permissions is the right mechanism for limiting use of pg_prewarm. It seems like ownership of the table would be more appropriate, or maybe access to one of the built-in roles like pg_maintain. > 1. Can a role have access rights to a table without having access to its > index? Indexes do not have access rights of their own, which is why access rights are a poor gating mechanism for something that needs to be applicable to indexes. Ownership could work, because we make indexes inherit their table's ownership. regards, tom lane