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Oracle Database 10g R2: Administering RAC Sample Questions:

1. Your company has certain standard practices for technology and you are configuring ASM disk groups for your four-node RAC cluster. The company guidelines suggest that there is one disk group for the flash recovery area that is shared by all databases and a separate disk group for the database area of all databases. Which three exceptions exist that may require you to create additional disk groups? (Choose three.)

A) There are partitioned tables where the older partitions are in read-only tablespaces and seldom accessed, but the more recent partitions are frequently accessed.
B) Applications using the databases have different Service-Level Agreements for response time and throughput.
C) Some database instances are shut down every night while others are always running.
D) There are large nonpartitioned tables accessed frequently using indexes.
E) The disk farm has different disk models with different characteristics and ages.
F) The retention policy for backups are different for different databases.
G) Some databases operate in ARCHIVELOGMODE and others in NOARCHIVELOGMODE.

2. View the Exhibit.
You are required to support your Oracle RAC configuration using ASM and RAID technology. You plan to discuss the storage configuration with the storage technology team. They have proposed a configuration as shown in the exhibit with a separate set of LUNs for the data disk group and the flash recovery area disk group and a 500 KB stripe size in line with other non-Oracle LUNs. The Data disk group has four250G LUNs and the FRA disk group has four500G LUNS, both of which are mirrored.

A) I/O to the flash recovery area disk group for backups may cause performance issues when full table scans are occurring during batch workloads.
B) Retention policies that require backups to be kept for long time periods may cause wasted space due to large allocation units.
C) Index Range Scans would cause I/O to many different physical disks.
D) The LUNs are not aligned with ASM Allocation Units, which may lead to I/O bottlenecks.

3. Which three statements are true regarding RAC instance startup and shutdown using SQL'Plus? (Choose three.)

A) You can start multiple instances from a single SQL*Plus session on one node using Oracle Net Services connection strings.
B) It is not possible to start up or shut down more than one instance at a time in SOL*Plus. so you cannot start or stop all the instances for a cluster database with a single SQL*Plus command.
C) Using SQL*Plus to start and stop the RAC database instances is the preferred method because SQL*Plus is a Clusterware client.
D) To start or shut down your local instance, initiate a SQL*Plus session connected as SYSDBA or SYSOPER, and then issue the required command.

4. After a power failure, you noticed that one of your cluster database instances did not start automatically, whereas all other instances came up successfully. What would you do to determine the precise cause for the instance startup failure? (Choose three.)

A) Check the alert.log file that belongs to the Oracle Clusterware software.
B) Check for OCR corruptions by using the OCRCHECK command.
C) Check the alert.log file that belongs to the instance that did not start.
D) Check if the Oracle Clusterware is functional by using the CRSCTL command.
E) Enable extra debugging in the Oracle Clusterware software by using the CRSCTL command.
F) Reboot the node where the failing instance resides to check if the problem is persistent.
G) Check the resource state by using the CRS_STAT command.

5. For which two server metrics can you define thresholds for your services? (Choose two.)

A) ELAPSED_TIME_PER_CALL
B) PHYSICAL_READ_PER_CALL
C) LOGICAL_READ_PER_CALL
D) SQL EXECUTE ELAPSED TIME
E) APPLICATION_WAIT_TIME
F) CPU_TIME_PER_CALL

Solutions: