Oracle 1Z0-048 Exam : Oracle Database 10g R2: Administering RAC

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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

1. You want check whether the group services node application is running on all the nodes in your cluster before you create a cluster database. Which utility can you use to make sure the node application is running on all nodes in the cluster?

A) crs_stat
B) addnode.sh
C) crsctl
D) onsctl
E) Isnrctl

2. You need to add a new service to your RAC database, called DBA, to account for all the work done by database administrator sessions performing routine maintenance, to make this visible in the v$service_stats view. The maintenance would be done at quieter times but restricted session is not an option due to round-the-clock access requirements. The database administration team may connect locally or remotely to the RAC database. You decide to use DBCAto create the new service.
What must be true to allow client-server connection to the DBA service? (Choose two.)

A) The service must have at least one preferred or available instance that is running and accepting logins.
B) The service must be started using the DBMS_SERVICE.START_SERVICE procedure.
C) The ALTER SYSTEM REGISTER command must be used to induce PMON to register the service with the listeners.
D) The TNSNAMES.ORAfile or a name server must contain the net service entries for the DBA service.
E) All the listeners must be reloaded using LSNRCTL RELOAD to recognize the dynamically created service.
F) The services must be started using the SRVCTL START SERVICE command.

3. View the Exhibit, which displays a portion of an ADDM report from a RAC database. Which three statements are true? (Choose three.)

A) The ADDM report output reveals a "hot block" condition.
B) A LOCK TABLE statement is causing excessive inter-instance messaging.
C) The SQL statement with the ID dqsu2hwys8rcf was executed 40000 times
D) The Findings Path section indicates that the Cluster wait class is consuming a significant proportion of the database time.

4. You are about to build a new Oracle Clusterware-based cluster and you want to make the installation process as smooth as possible. You decide to use the Cluster Verification Utility (CLUVFY) to check whether or not your system administrator has set up the hardware and system software correctly. Which two statements about CLUVFY are true? (Choose two.)

A) You have to install CLUVFY on all cluster nodes in order to use CLUVFY on other nodes than the one from which you perform the installation.
B) You can run CLUVFY only from a privileged operating system account.
C) After the Oracle Clusterware installation, you can run CLUVFY from the Oracle Home that holds the CRS binaries.
D) You can run CLUVFY directly from the Oracle Clusterware distribution media.
E) To use CLUVFY during the Oracle Clusterware installation, you have to download CLUVFY from the Oracle Technology Network (OTN) Web site and install it before you can use it.
F) CLUVFY cannot be used until the Oracle Clusterware is installed successfully.

5. You have a four-node cluster with instances RDBD1, RDBD2, RDBD3, and RDBD4. While evaluating statspack reports, you find nq: TX- index contention on page one under the category op 5 Timed Events.
Further study finds an unusually high number of c buffer busy waits in the Wait Events section. Checking the Instance Activity Stats section, you see an unusually high value for eaf Node Splits. Using v$segment_statistics, you identify that the top segment with c buffer busy waits is the index prooducts_pk, which obtains the primary key from a sequence. You wish to present alternative solutions to the team to help reduce contention.
Which three actions would you recommend to reduce the overheads? (Choose three.

A) Set fast_start_mttr_target to a higher value.
B) Increase the sequence cache size if retaining the sequence.
C) Re-create the index as a global hash partitioned index.
D) Encourage shorter transactions.
E) Set _lm_msg_batch_size to a higher value.
F) Re-create the table using a natural key instead of a surrogate key.

Solutions: