On an extremely busy 24x7 10.2.0.3 db, I need to grant privileges on several tables to a few roles. This would invalidate the sqls (we are talking 100s/1000s of sqls) in the sql area that refer to the tables leading to a hard parse storm. Is there a documented/undocumented way to prevent the invalidations and the resulting reparses? Thanks in advance. -- Arul