OCP 1Z0 052 44

44.  Your  database  is  functional  with  a  peak  load  for  the  last  one  hour.  You  want  to  preserve  the 
performance  statistics  collected  during  this  period  to  be  used  for  comparison  when  you  analyze  the 
performance of the database in the future.  
What action would you take to achieve this task?  
A.Insert finding directives for ADDM tasks in the future. 
B.Create a baseline on a pair of snapshots spanning the peak-load period. 
C.Decrease the snapshot interval in the AWR to collect more snapshots during the peak-load period. 
D.Set  the  snapshot  retention  period  in  the  Automatic  Workload  Repository  (AWR)  to  zero  to  avoid 
automatic purging of snapshots. 
Answer: B

Baselines are an effective way to diagnose performance problems. AWR supports the capture of baseline data by enabling you to specify and preserve a pair or a range of snapshots as a baseline. The snapshots contained in a baseline are excluded from the automatic AWR purging process and are retained indefinitely.