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1. You are asked by the DBA team leader to consolidate three different Oracle databases, which supported three separate workloads, into one large three-instance RAC database on a three-node cluster. You also need to create a separate service to represent each workload type and support client-side load balancing. The CRM service has two preferred instances, the HR service has two, and the ORDERS service
has only one. Any instance may be used as an vailable instance for any service that is not
specified as a preferred service for that same instance. You decide to create three separate
entries in TNSNAMES.ORA.
Choose three options describing the number of entries you would have in each address list.
(Choose three.)

A) one entry for the address list for the ORDERS service for the listeners on the nodes containing the preferred instance for ORDERS
B) three entries in the address list for the CRM service for the listeners on all three nodes
C) two entries for the address list for the CRM service pointing to the listeners on the nodes containing the preferred instances for CRM
D) three entries in the address list for the HR service for the listeners on all three nodes
E) three entries in the address list for the ORDERS service pointing to the listeners on all three nodes
F) two entries for the address list for the HR service for the listeners on the nodes containing the preferred instances for HR

2. Which two statements regarding the installation of the Oracle 10g Database software are true? (Choose two.)

A) 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.
B) 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.
C) The directory path for the Oracle 10g Database software must not be the same as the Oracle 10g Clusterware home directory.
D) The OUI does not support a RAC installation if the Standard Edition is chosen from the Installation Type page.

3. You are considering issues involving backup and recovery of the voting disk. Select four correct statements. (Choose four.)

A) To back up the voting disk, use the command ocrconfig -export.
B) You can determine the voting disks currently used by CSS with the command crsctl query ess votedisk.
C) Backup can be performed online.
D) Use symbolic links to simplify recovery of the voting disk.
E) If you lose your voting disk and do not have a backup, you must reinstall Oracle Clusterware. ]

4. Several steps must be followed to successfully add a node to your cluster database. Assuming that a UNIX platform is used, which of the steps listed below is not correct? (Choose the incorrect step.

A) Add the node to the cluster using the addnode.sh script run from ORA_CRS_HOME.
B) Add the RAC software to the new node using orainstRoot.sh from ORACLEJHOM
C) Add instances via DBC
D) Reconfigure listeners for the new node with netca.
E) Configure the OS and hardware for the new node.

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

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