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

Vendor Name Oracle
Exam Code 1Z0-048
Exam Name Oracle Database 10g R2: Administering RAC
Questions and Answers 150 Q & A
Updated On September 14, 2017
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Which two statements about the correct configuration of the flash recovery area in a RAC environment are true? (Choose two.)

  1. Set the flash recovery area size to no smaller than 20 GB.

  2. Set the DB_RECOVERY_FILE_DEST initialization parameter to the same value on all instances.

  3. Set the DB_RECOVERY_FILE_DEST_SIZE initialization parameter to the same value on all instances.

  4. The use of a common flash recovery area is not recommended on clusters containing more than four nodes.

Answer: B, C


You are running a two-instance database with six redo log groups defined and decide to add a third thread to support a third database instance on the third node of the cluster. Which three commands would you issue to achieve this using command line administration? (Choose three.)







Answer: B, E, F


The following are the steps that you have taken so far in a two-node RAC implementation:

  1. Completed the preinstallation tasks

  2. Performed Oracle Clusterware installation

View the Exhibit and examine the current status of a list of resources on each node. Your next

step is to install the Oracle Database 10g software on these nodes. Which statement is true

about running Oracle Universal Installer (OUI) and installing the software in this situation?

  1. You run OUI from any node and the software would be installed on both the nodes successfully.

  2. You run OUI from any node and the installer would prompt you to run the crs_start command to start the resources that are offline.

  3. You must run OUI from the first node ora....17a because running it from the second node ora....17b would result in an error.

Answer: A


What is the action of your client connection when it is using the following connect string? net_service_name= (DESCRIPTION=

(ADDRESS=(PROTOCOL=tcp)(HOST=sales1-svr-vip)(PORT=1521)) (ADDRESS=(PROTOCOL=tcp)(HOST=sales2-svr-vip)(PORT=1521)))


  1. It always connects you to the least loaded node.

  2. It always connects you to the first protocol address.

  3. It randomizes its connection on the available listeners.

  4. It tries to connect you to the listener on SALES2-SRV-VIP if the listener on SALES1- SRV-VIP is down.

Answer: D


You are working with Oracle Support to resolve an issue regarding the Oracle Clusterware software. The Oracle support engineer wants you to upload all relevant CRS log and trace files. How would you provide all the requested log and trace files?

  1. Upload each and every available log and trace files to Oracle Support.

  2. Use Grid Control to collect and send all required log and trace files to Oracle Support.

  3. Collect all required log and trace files using the command and upload them to Oracle Support.

  4. Use an operating system command to create an archive with all the log and trace files stored in the ORA_CRS_HOME/log directory and upload the files to Oracle Support.

Answer: C


You decide to implement Fast Start Failover for your RAC Data Guard configuration to improve your high availability strategy. Which are the two valid locations for the DG Broker configuration files? (Choose two.)

  1. on the local storage at the observer location

  2. on the shared storage at the primary location

  3. on the shared storage at the standby location

  4. on the shared storage at the observer location

  5. on the storage that is shared between the observer location and at least one of the instances that is part of the data guard configuration

Answer: B, C


Which two statements are true in any RAC environment? (Choose two.)

  1. After your redo threads are defined, you cannot add new ones.

  2. A RAC database must contain at least two threads of redo log files per instance.

  3. A RAC database must contain at most one redo thread for each instance.

  4. A publicly enabled thread can be used by any instance of your RAC database.

  5. A redo thread must contain at least two groups of redo log files before it can be enabled.

Answer: D, E


You have a three-tier architecture for your application, which uses an Oracle RAC database and a middle tier that uses Oracle Application Server with Java programming, using JDBC as the standard. There are three RAC services defined, and four instances in the database are using ASM as the cluster file system. Connection pools are also used. Which three features of Fast Application Notification would be beneficial in your environment, and which choices for your application would you recommend? (Choose three.)

  1. ODP.Net connection pool

  2. JDBC Implicit Connection Cache

  3. the App Server Up and Down FAN event notifications

  4. the continuous availability of services due to FAN events

  5. Load Balancing Advisory FAN events to control ASM I/O workload

  6. Load Balancing Advisory FAN events to control workload per instance for each service

Answer: B, D, F


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?

  1. Increase the cache size of sequences.

  2. Reduce the time of transactions by committing more often.

  3. Use larger uniform extent sizes for objects.

  4. Reduce the number of updates causing locks on tables accessed by multiple instances.

Answer: C


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?

  1. There is no easy way to check your OCR backups for corruptions.

  2. You can check whether the OCR backups are not corrupted by using the OCRCHECK command.

  3. You create a logical export from the OCR backups by using the OCRCONFIG command and analyze the export file for errors.

  4. 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.

  5. 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.

Answer: D


According to the Maximum Availability Architecture, which case is best?

  1. Run two identical sites with a primary RAC database on the first site, and only a RAC logical standby database on the second site.

  2. Run two identical sites with a primary RAC database on the first site, and only a RAC physical standby database on the second site.

  3. Run two identical sites with a primary RAC database on the first site, and RAC physical and logical standby databases on the second site.

  4. Run two identical sites with a primary RAC database on the first site, and non-RAC physical and logical standby databases on the second site.

Answer: C


View the Exhibit, which displays the cluster database performance page after the same workload has been executed three times on your cluster without varying any non-Oracle workloads on the cluster. What are the two ways by which you can tell that the corresponding application was better tuned during the second and third execution? (Choose two.)

  1. There is less paging each time

  2. The run queue length is going down each time.

  3. It takes less time to execute the workload each time.

  4. The number of transactions per second is getting higher each time.

  5. The database throughout graphic is below the red dashed line during the last execution.

Answer: C, D

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