is it possible to log all ora errors into alert log? using the event trace?
You do not want to use the trace events to log *all* your oracle errors, as it could possibly slow down the oracle performance.
Life is a journey, not a destination!
no. i just want to enable this feature (if it has) for a while. say after an instance crasy. and disable once it is smooth running.
Setting trace events would be the choice. But remember, each events and their trace levels vary in their functionality.