You find today’s performance of your production database to be the best ever. Therefore, you want to be notified in the future whenever the performance degrades by 10% of today’s performance.
What is the first step that you would take to ensure this?
A.
create baseline metrics for today’s performance
B.
write the current database metrics to a database table and create a trigger to compare with future database statistics
C.
write the current database metrics to a flat file and create an operating script to compare with future database statistics
D.
write the current database metrics to a database table and create a procedure to compare with future database statistics
E.
write the current database metrics to a database table and submit a job using DBMS_JOB to compare with future database statistics