Richard is a senior DBA and has prepared a plan for RAC implementation in his company. Given below are some of the tasks that he would perform as part of the plan: 1) Creating the Raw Devices Mapping file 2) Creating database services 3) Binding the partitions to raw devices 4) Creating the Voting Disk file 5) Creating an initialization parameter file 6) Creating the Oracle Cluster Registry (OCR) file 7) Creating the tnsnames.ora file 8) Creating the database control file
During the creation of the RAC database, Richard can use the Database Configuration Assistant (DBCA) to perform some of these steps but not all of them. Which steps should be completed before Richard starts creating the database by using DBCA?

• A. 3, 4,6,7,8
• B. 2, 5,7,8
• C. 2, 5,6,7,8
• D. 1, 3,4,6
• E. 1, 2,4,5,6,7

Which three statements are correct regarding ASM instances in a RAC environment? (Choose three.)

• A. ASM instances can use different values for ASM_POWER_LIMIT.
• B. ASM instances recognize their disks by looking at their headers.
• C. ASM instances must all have the same value for ASM_DISKSTRING.
• D. ASM instances must all have the same value for ASM DISKGROUPS.
• E. ASM instances can mount different sets of disk groups.

Your storage administrator informs you about some disk corruption issues in the disk subsystem where your Oracle Cluster Registry (OCR) backups are located. Your storage administrator has resolved these corruption issues by applying a patch to the storage subsystem, but to be sure that the OCR backups are not affected by this problem the administrator wants you to check the integrity of the OCR backups. How would you do this?

• A. You create another physical backup of the OCR backups by using the OCRCONFIG command, and if this succeeds without errors you know that the OCR backups are not corrupted.
• B. There is no easy way to check your OCR backups for corruptions.
• C. You create a logical export from the OCR backups by using the OCRCONFIG command and analyze the export file for errors.
• D. You can check whether the OCR backups are not corrupted by using the OCRCHECK command.
• E. You dump the OCR backup contents into a text file by using the OCRDUMP command, and if that succeeds without errors you know that your OCR backups are not corrupted.

In a RAC environment, you see a steep increase for enq:HW- contention and gc current grant wait events. What would you do to fix this issue?

• A. Increase the cache size of sequences.
• B. Use larger uniform extent sizes for objects.
• C. Reduce the time of transactions by committing more often.
• D. Reduce the number of updates causing locks on tables accessed by multiple instances.