Read consistency error. Oracle reads data from online undo segments if data were changed since start reading. Lots updates and small undo size can rewrite undo and you lost snapshot data for running query. ORA-01555: snapshot too old: rollback segment number string with name “string” too small Cause: Rollback records needed by a reader for […]
Cause: A trigger was attempted to be retrieved for execution and was found to be invalid. This also means that compilation/authorization failed for the trigger. Action: Options are to resolve the compilation/authorization errors, disable the trigger, or drop the trigger.