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Oracle 1Z0-048 Exam Syllabus Topics:

Oracle Database 10g R2: Administering RAC Sample Questions:

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

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

3. Which two statements about parallel recovery in a RAC environment are true? (Choose two.)

A) The RECOVER Y_PARALLELISM initialization parameter causes serial recovery if the value is greater than two.
B) Parallel recovery is most effective at reducing recovery time while concurrently recovering several data files on several disks.
C) The use of the RECOVER Y_PARALLELISM initialization parameter is the only way to initiate parallel recovery.
D) The RECOVERY_PARALLELISM initialization parameter specifies the number of redo application server processes participating in instance or media recovery.

4. What is true about Virtual Internet Protocol Configuration Assistant (VIPCA)?

A) Each Virtual IP (VIP) configured requires an unused and resolvable IP address.
B) The VIPCA application must be run manually on all nodes in the cluster.
C) The ifconfig -a command is used to back out a faulty VIPCA configuration.
D) The VIP for each node should be bound to the adapter that is acting as the private interconnect.

5. Which two views can be used to identify SQL statements affected by interconnect latencies in your RAC environment? (Choose two.)

A) the VJSQL view
B) the VJSQLTEXT view
C) the V$SQL_PLAN view
D) the VJSQL CURSOR view
E) the VJSQLAREA view

Solutions: