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Oracle 1Z0-048 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Oracle Clusterware Installation and Configuration | 20% | - Managing Clusterware components - Installing and configuring Clusterware - Pre-installation tasks and requirements |
| Topic 2: Monitoring and Performance Tuning | 10% | - Resolving common performance issues - Monitoring RAC environment |
| Topic 3: Automatic Storage Management (ASM) for RAC | 15% | - Installing and configuring ASM - Managing ASM instances and disk groups |
| Topic 4: Backup and Recovery in RAC Environment | 15% | - Configuring RMAN for RAC - Performing backup and recovery operations |
| Topic 5: Oracle RAC Installation and Database Creation | 20% | - Creating RAC databases with DBCA - Preparing for RAC installation - Installing Oracle RAC software |
| Topic 6: RAC Database and Instance Administration | 20% | - Managing services and workloads - Starting and stopping RAC components - Using SRVCTL and Enterprise Manager |
Oracle Database 10g R2: Administering RAC Sample Questions:
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?
- A. Increase the cache size of sequences.
- B. Reduce the time of transactions by committing more often.
- C. Reduce the number of updates causing locks on tables accessed by multiple instances.
- D. Use larger uniform extent sizes for objects.
Correct Answer: D 🗳️
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))) (CONNECT_DATA=(SERVICE_NAME=sales. us. acme, com)))
- A. It tries to connect you to the listener on SALES2-SRV-VIP if the listener on SALES1-SRV-VIP is down.
- B. It randomizes its connection on the available listeners.
- C. It always connects you to the least loaded node.
- D. It always connects you to the first protocol address.
Correct Answer: A 🗳️
You define the ERP service using this statement:
srvctl add service -d RACDB -s ERP -r RAC01 -a RAC02 -P PRECONNECT srvctl start service -d
RACDB -s ERP
You then use this connect string to connect to your RAC instances:
ERP =
(DESCRIPTION =(FAILOVER=ON)(LOAD_BALANCE=ON)
(ADDRESS=(PROTOCOL=TCP)(HOST=N1 VIP)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=N2VIP)(PORT=1521))
(CONNECT_DATA = (SERVICE_NAME = ERP)
(FAILOVER_MODE =
(BACKUP=ERP_PRECONNECT)(TYPE=SESSION)(METHOD=PRECONNECT))))
You successfully establish a connection to your RAC database using the above connect string.
How many connections are established, and on which instances?
- A. two on RAC02
- B. only one on RAC01
- C. two on RAC01
- D. one on RAC01 and one on RAC02
Correct Answer: D 🗳️
View the Exhibit.
You are asked to help a colleague to logically remove node NLEDUC2 from a RAC cluster
installation.
On observing the colleague's terminal, you notice the output as seen in the exhibit. Based on this,
which five additional steps would you recommend? Do not be concerned with the correct
sequence for the steps.
(Choose five.)
- A. Stop and restart the clusterware on NLEDUC1.
- B. Check that the database and ASM instances are all terminated on NLEDUC2.
- C. Remove the listener from NLEDUC2.
- D. Check that the node has been removed from the database and ASM inventories.
- E. Check that the software has been removed from the database and ASM homes on NLEDUC2.
- F. Check that the ONS configuration has been updated on the remaining node.
- G. Stop and restart the nodeapps on NLEDUC1.
- H. Remove the node from the clusterware.
Correct Answer: B,D,E,F,H 🗳️
Which initialization parameter would you use for each RAC instance to make sure that each listener on each RAC node is aware of the load of all the others?
- A. PREFER LEAST LOADED NODE <listener-name>
- B. REMOTEJJSTENER
- C. REMOTE_DEPENDENCIES_MODE "
- D. LOCALJJSTENER
Correct Answer: B 🗳️
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