1Z0-048の無料問題集（150題）、1Z0-048認定試験参考書

Oracle 1Z0-048 問題集

試験コード：1Z0-048

試験名称：Oracle Database 10g R2: Administering RAC

最近更新時間：2026-06-03

問題と解答：全150問

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質問 1：
Your four-node RAC cluster is no longer coping with workloads for one of its databases at peak periods and you decide to add another node to the cluster. The current configuration has two RAC databases, each with four instances with only the second database using ASM as a clustered database file system. ASM is installed in a separate home. Which five steps must you take to add all the software components and processes to the new node before you run DBCAto add database and ASM instances on the new cluster nodes. Do not be concerned with the correct sequence for the steps. (Choose five.)
A. Run addNode.sh in the ASM home/oui/bin directory from one of the existing nodes.
B. Run addNode.sh in the RDBMS home/oui/bin directory from one of the existing nodes.
C. Run cluvfy stage -pre crsinst <list of all nodes> from one of the existing nodes to verify the cluster configuration.
D. Run addnode.sh in the Clusterware home/oui/bin directory from each of the existing nodes once to define the new node to each existing node.
E. Run addnode.sh in the Clusterware home/oui/bin directory from one of the existing nodes to define the new node to all existing nodes.
F. Run netca from the new node to add a listener to the new node.
G. Run racgons add_config from one of the existing nodes to add the ONS metadata to the OCR.
正解：A,B,E,F,G

質問 2：
You are working with Oracle Support to investigate to what extent a disk subsystem corruption has affected your Oracle cluster configuration. The support engineer wants you to run the OCRCHECK command and read out the output. What is the effect of running the OCRCHECK command?
A. t checks whether the Oracle Cluster Registry daemons are running normally.
B. t checks whether all your cluster resources, such as databases, instances, listeners, and node applications, are registered within the OCR.
C. t performs an OCR integrity check.
D. t checks whether the OCR daemons are making regular backups of the OCR.
E. t checks whether there is enough disk space for the OCR.
正解：C

質問 3：
Which two statements are true regarding high availability in a RAC environment? (Choose two.)
A. Each primary RAC instance must send its redo stream to the same standby RAC instance.
B. It is the Data Guard Broker's responsibility to communicate with CRS during a switchover operation to stop and start services according to each Data Guard site role.
C. When you have a serious crash of your primary site, Data Guard Broker automatically initiates the failover to the standby site.
D. When you have a serious crash of your primary site, it is your responsibility to initiate the failover to the standby site in case you are not using the Fast-Start Failover feature.
E. You can have multiple RAC instances apply standby redo log files to the standby database.
正解：B,D

質問 4：
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.)
A. ALTER SYSTEM ENABLE THREAD 3;
B. ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 8;
C. ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 7;
D. ALTER SYSTEM ADD LOGFILE THREAD 3 GROUP 7;
E. ALTER DATABASE ENABLE THREAD 3;
F. ALTER DATABASE ADD LOGFILE THREAD 3 GROUP 8;
正解：C,E,F

質問 5：
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.)
A. JDBC Implicit Connection Cache
B. the App Server Up and Down FAN event notifications
C. the continuous availability of services due to FAN events
D. Load Balancing Advisory FAN events to control workload per instance for each service
E. Load Balancing Advisory FAN events to control ASM I/O workload
F. ODP.Net connection pool
正解：A,C,D

質問 6：
Which two statements regarding the installation of the Oracle 10g Database software are true? (Choose two.)
A. If the OUI does not display all of the available nodes in your cluster, check the viability of your cluster and its associated nodes by executing the chkcluster command from $ORA_CRS_HOME/bin directory.
B. The directory path for the Oracle 10g Database software must not be the same as the Oracle 10g Clusterware home directory.
C. The OUI does not support a RAC installation if the Standard Edition is chosen from the Installation Type page.
D. The Oracle Universal Installer (OUI) can detect the cluster hardware and allow the user to install the software on the local node or choose all nodes to install the software.
正解：B,D

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Oracle Database 10g R2: Administering RAC 認定 1Z0-048 試験問題:

1. Over a six-month period, you have been regularly monitoring your four-instance RAC database,
which is running on the first 4 nodes of a 6-node cluster, by using ADDM and by monitoring well-
known combinations of wait event and statistics in AWR reports.
Two weeks ago, a newer version of your main application went live. Starting last week, you
noticed a large increase in CPU time (consumed by the three application services on your RAC
database) due to increased workload.
The OLTP and DSS services have not had a decrease in the percentage of time spent using CPU.
However, for the BATCH service the percentage of time spent using CPU has gone down and the
wait-time percentage has increased.
You want to recommend a tuning exercise to your team. Which two recommendations would you
make first, based on the symptoms described? (Choose two.)

A) The BATCH service programs may scale well and could benefit from adding new database instances on either node 5 or 6, or on both.
B) The OLTP and DSS service programs may scale well and could benefit from adding new database instances on either node 5 or 6, or on both.
C) Tune SQL from the BATCH service programs because they may benefit from SQL tuning.
D) The OLTP and DSS service programs may scale well and could benefit from adding new database instances on one or both of nodes 5 and 6, and by adding more nodes the SQL for BATCH service programs would perform better due to more CPU power.
E) Tune SQL for the OLTP and DSS service programs because they may benefit from SQL tuning.

2. You are requested to make your Web server, which accesses a clustered Oracle database, highly available. Which solution would you propose?

A) Bring your Web server under control of the Oracle Clusterware and use the private IP address to reach your Web server from your clients.
B) Because you cannot use Oracle Clusterware to protect your Web server, you come up with an operating system solution.
C) Bring your Web server under control of the Oracle Clusterware and use the public IP address to reach your Web server from your clients.
D) Bring your Web server under control of the Oracle Clusterware and use an application VIP address to reach your Web server from your clients.
E) Bring your Web server under control of the Oracle Clusterware and use the RAC VIP address to reach your Web server from your clients.

3. 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 al the requested log and trace files?

A) Collect all required log and trace files using the diagcollection.plcommand and upload them to Oracle Support.
B) 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.
C) Upload each and every available log and trace files to Oracle Support.
D) Use Grid Control to collect and send all required log and trace files to Oracle Supporl.

4. You are migrating a single-instance Oracle database to RAC. The data files and Flash Recovery Area would be migrated to ASM using the RMAN commands BACKUP AS COPY DATABASE and BACKUP RECOVERY AREA, and stored in an ASM diskgroups called +DB_DG and +FR_DG. The DB_CREATE_FILE_DEST parameter would be set to +DB_DG and the DB_RECOVERY_FILE_DEST parameter would be set to +FR_DG.
What are the three best options for the location of your archivelogs so that they may be used properly for recovery without DBA intervention? (Choose three.)

A) ASM diskgroup +FR_DG as specified for the Flash Recovery Area provided that the ASM diskgroup is mounted on all ASM instances.
B) Local File System with each instance writing to a local location provided that the path names are identical on all nodes.
C) Cluster File System with each instance writing to a separate location as long as they are in directories under the same mount point.
D) Cluster File System with each instance writing to a shared location.
E) Local File System with each instance writing to a local location provided that NFS read mount points are created to all other nodes with instances of the database.
F) ASM diskgroup +DB_DG as specified for the Database Area provided that the ASM diskgroup is mounted on all ASM instances.

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

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

質問と回答：

質問 # 1
正解： B、C

質問 # 2
正解： D

質問 # 3
正解： A

質問 # 4
正解： A、D、E

質問 # 5
正解： A、E