多项选择题
A. Health Monitor checks can be used to scan the contents of the redo log and archive logs for accessibility and corruption.
B. Health Monitor checks can be used to verify the integrity of database files and report failures if these files are inaccessible，corrupt or inconsistent.
C. Health Monitor checks can be used to verify the contents of dictionary entries for each dictionary object and fix it automatically.
D. Health Monitor checks are always initiated manually when there is some critical error.
多项选择题 Whichtwoprerequisitesareneededforperformingworkloadcaptureandreplay？（）
单项选择题 You are working on the APPDB database as a DB A. The database has a default Flashback Data Archive DFLA1 created on it. You issued the following command to drop the Flashback Archive FLA1： DROP FLASHBACK ARCHIVE fla1； What is the effect of this command？（）
单项选择题 Your company wants to upgrade the current production database to the RAC environment. To perform testing before migrating to the RAC environment， you performed the workload capture on the production database to record the peak workload. You set up the test RAC databaseand want to replay the recorded workload on the testmachine. Note the following steps that you may require to replay the database workload： 1） Preprocess the captured workload. 2） Restart the database in RESTRICTED mode. 3） Set up the Replay Clients. 4） Restore the test database to the point when the capture started. 5） Remap connections. Arrange the steps required in the correct sequence to accomplish this task on the test machine.（）