1Z0-485 Online Practice Questions and Answers

Which two statements are true about enabling write-back flash cache?

A. When enabling write-back flash cache in a non rolling manner, it is important to ensure that asmdeactivatonoutcome is set to YES and asmModestatus is set to ONLINE for all grid disks.

B. Before using write-back flash cache, you need to verify the minimum required versions.

C. Before write back-flash cache is enabled, you need to drop the Flash Cache first.

D. The setting flashCacheMode should be set to writeback by updating cellinit.ora and restarting cellsrv.

E. When enabling write-back flash cache in a rolling manner, dcli should be used to inactivate the grid disks on all cells first.

The mpstat output from OS Watcher shows a database node as being 90% idle on an average. What would you do to get a full picture of CPU utilization on the entire Exadata RAC cluster?

A. Average the mpstat id1 output from all the nodes.

B. Ask application users if they have noticed a slowdown in screen response.

C. Look for an increase in batch job servicing times.

D. A and B above

Which two statements are true about troubleshooting failed patching activities?

A. Dependency issues found during yum updates require rolling back to a previous release before retrying.

B. Bundle patches applied using opatch auto cannot roll back only the database or the grid infrastructure home.

C. Failed OS patches on database servers can be rolled back.

D. Failed storage cell patches are rolled back to the previous release automatically.

E. Database server OS updates can be rolled back using opatch auto -rollback.

F. Dependency issues found during yum updates should be ignored using the force option.

What are two choices that a customer must make that impact diskgroup creation?

A. What is the level of redundancy required?

B. What OS will be run?

C. Where will disk backups be written?

D. How many databases will run on the cluster?

The Exadata compute node, exadbs04, has been having issues for some time. The server had to be repaired and you just received a new server. Your LVM snapshot was corrupt and now the compute node must be re-image with an Oracle Support installation image. Which three tasks would you need to perform to re-image the compute node?

A. Mount the LVM backup image across the network and recover the system.

B. Remove exadbs04 from the RAC cluster and all associated Oracle Homes from the central inventory.

C. Create a CELLBOOT USB Flash Drive using an external USB drive.

D. Reboot the new server using a bootable recovery image from the external USB drive.

E. Reconfigure all site-specific settings (host name, IP addresses, NTP server, and so on).

Which two migration will result in the least down time for a physical or logical migration of a database with active users during the migration?

A. using GoldenGate

B. using SQL Developer migration tools

C. using Data Guard Physical Standby

D. using cross-platform transportable tablespaces

E. using incremental cross-platform RMAN restore

Your customer would like to use DBFS in their Exadata environment. They are asking you for the key characteristic of DBFS on Exadata.

A. DBFS in an Exadata environment is faster than an NFS mount system because of the Smart Scan performance gains.

B. Tens of thousands of files are the perfect use case for DBFS on Exadata. 100% Real QandAs | 100% Real Pass

C. DBFS offers tremendous I/O bandwidth.

Which two statements appropriately describe the backup and recovery procedures on Exadata?

A. Cell software backup is automatic and cell recovery is accomplished by using a rescue procedure.

B. Data stored in a database is backed up and restored by using CellCLI commands.

C. Database server software backup is automatic and recovery is accomplished by using a rescue procedure.

D. Data stored in a database is backed up and restored by using RMAN commands.

E. Cell software backup is performed through CellCLI and cell recovery is accomplished by using a rescue procedure.

Identify a recommended configuration to set up Auto Service Request (ASR) for Exadata.

A. Install ASR Manager on Exadata Database Server.

B. Install ASR Manager on Exadata Storage Server.

C. ASR is not recommended for Exadata; the Oracle Configuration Manager is preferred.

D. Install ASR Manager on a Standalone Server.

Identify the relevant steps in the correct order for activating an Auto Service Request (ASR) configuration.

1.

Add SNMP traps manually or using OneCommand.

2.

Install ASR Manager.

3.

Activate a node on ASR Manager.

4.

Validate the configuration.

5.

Register ASR Manager with Oracle.

A. 2, 5, 1, 3, and 4

B. 2, 4, I, 3, and 5

C. 5, 2, 4, 1, and 3

D. 5, 4, 2, 1, and 3