Hi hrishy,

You are right, in the alert log file, it did say dbwr and lgwr can't write to my datafile 39, then Oracle took this file offline.

I did check the trace file, but how can I get info from trace file? There are different trc files: ORA123321.trc, SMON.TRC and CORE.log. Which one can provide me some info for remedial action?

Thank you