Keaton Adams <Keaton_Adams@xxxxxxxxxx> writes: > Any ideas why we would be receiving this cache lookup failed message? > PostgreSQL 8.3.7 64 bit, RHEL 5 64 bit OS > [ query applying pg_table_is_visible() to most of pg_class ] Is it repeatable, or just something that shows up occasionally with different OIDs mentioned? If the latter, it's probably a known race condition against table drops: the pg_class scan can find rows that belong to tables that are already deleted by the time pg_table_is_visible gets called. There's a hack in 8.4 to avoid the errors by having pg_table_is_visible (and related functions) return null instead of failing, but I don't believe we changed it in previous releases. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general