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
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Given: Whatistheresult?（）
A. Mr.JohnDoe
B. inexceptionisthrownatruntime.
Compilationfailsbecauseofanerrorinline12.
D. Compilationfailsbecauseofanerrorinline15.
E. Compilationfailsbecauseofanerrorinline20.
Why would you run the delete obsolete command？（）
A. To remove missing backup set pieces physically from disk
B. To remove metadata related to backup set pieces in the control file and the recovery catalog
C. To mark as deleted records in the control file and the recovery catalog associated with obsolete backup sets
D. To delete backup set pieces associated with backups that are no longer needed due to retention criteria
E. To remove old versions of RMAN backups
AcustomerneedstoachieveaveryaggressiveRTOof30minutesorless.Acriticalrequirementisacontinuousavailabilityanddisasterrecoverysolutionforthemainframeenvironment. WhatIBMsolutionshouldberecommendedtothiscustomer?（）
A. MetroMirror
B. Metro/GlobalMirror
C. GeographicallyDispersedOpenServers(GDOS)
D. GeographicallyDispersedParallelSysplex(GDPS)
Given: Whatistheresult?（）
A. Compilationsucceeds.
B. Compilationfailsduetomultipleerrors.
Compilationfailsduetoanerroronlyonline20.
D. Compilationfailsduetoanerroronlyonline21.
E. Compilationfailsduetoanerroronlyonline22.
F. Compilationfailsduetoanerroronlyonline12.
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