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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q27-Q32):

NEW QUESTION # 27
You are monitoring PMEM cache to see if it is being used effectively with RDMA. Which two of these sources contain information about the RDMA I/O statistics?

A. PMEM Cache User Reads section in AWR Report
B. Database lOs section in AWR Report
C. Exadata Metrics (LIST METRICCURRENT)
D. PMEM Cache Space Usage section in AWR Report
E. Database Statistics (v$ View)

Answer: A,C

Explanation:
To monitor the effectiveness of Persistent Memory (PMEM) cache usage with RDMA on Exadata, information on RDMA I/O statistics can be found in:
PMEM Cache User Reads section in the AWR Report: This section provides detailed statistics on PMEM read operations, including user reads that leverage RDMA for direct memory access from PMEM. These metrics help gauge the utilization and efficiency of the PMEM cache.
Exadata Metrics (LIST METRICCURRENT): By using the LIST METRICCURRENT command within the Exadata environment, real-time metrics related to PMEM usage and RDMA I/O statistics can be accessed. This provides an immediate view of the current performance and activity on Exadata's persistent memory components.
These tools together offer insights into PMEM cache usage and the effectiveness of RDMA for optimized data access.

NEW QUESTION # 28
You must drop all celldisks on all the storage servers in an X9M-2 quarter rack as part of a reconfiguration project.
Which three statements describe the account on the storage servers which you should use and the tool that may be used to drop the celldisks?

A. to the CELLMONITOR account calling CELLCLI on all cells using DCLI
B. to the CELLADMIN account using cellcli interactively on each storage server
C. to an administrator-created storage server user with appropriate privileges on celldisk objects by calling EXACLI on all cells using exadcli
D. to the CELLMONITOR account using cellcli interactively on each storage server
E. to an administrator-created storage server user with appropriate privileges on celldisk objects by calling CELLCLI on all cells using exadcli
F. to the CELLADMIN account by calling CELLCLI on all cells using DCLI

Answer: B,E,F

Explanation:
To drop all celldisks on all the storage servers in an X9M-2 quarter rack, you should use the CELLADMIN account, which has the necessary privileges to perform this task. You can use the CELLCLI command-line interface to drop the celldisks. The best way to do this is by calling CELLCLI on all cells using DCLI (Oracle Database Command Line Interface) which allows you to run commands on multiple servers at once. Alternatively, you can use an administrator-created storage server user with appropriate privileges on celldisk objects by calling CELLCLI on all cells using exadcli. It is not recommended to use the CELLMONITOR account, as it has a more limited set of privileges. It is also important to note that EXACLI is not a valid tool for this task
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmmn/maintaining-exadata-storage-servers.html

NEW QUESTION # 29
A new Exadata Quarter Rack with 2 Database Servers and 3 HC Storage Servers and 3-phase 15kVA PDUs is being installed in a Data Center. However, the Data Center is only providing enough power for a single cable from each PDU.
Which statement is correct?

A. A splitter cable can be used to provide power to all PDU cables.
B. The power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.
C. The installation cannot proceed until two power feeds are available per PDU.
D. The installation can go ahead, no change is required.

Answer: C

Explanation:
An Exadata Quarter Rack with 2 Database Servers and 3 HC Storage Servers and 3-phase 15kVA PDUs would typically require two power feeds per PDU, one for each of the two power distribution units (PDUs) in the rack. A single power feed per PDU is not sufficient to provide the necessary power to the servers and storage in the rack.
The installation cannot proceed until two power feeds are available per PDU. According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], it is recommended that each PDU should have at least two power feeds from different power sources in the data center. This is to ensure redundancy and avoid any power interruption due to power failure on one of the power sources. Splitter cables are not recommended, as they can reduce efficiency and increase the risk of overheating. Rearranging the power cables within the rack is not recommended either, as it does not provide the necessary redundancy for the PDU.

NEW QUESTION # 30
A new Exadata Quarter Rack with 2 Database Servers and 3 HC Storage Servers and 3-phase 15kVA PDUs is being installed in a Data Center. However, the Data Center is only providing enough power for a single cable from each PDU.
Which statement is correct?

A. A splitter cable can be used to provide power to all PDU cables.
B. The power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.
C. The installation cannot proceed until two power feeds are available per PDU.
D. The installation can go ahead, no change is required.

Answer: C

NEW QUESTION # 31
Which three steps are required to expand an Exadata X9M-2 Database Server with the lowest memory configuration available to the highest memory configuration?

A. Add 12x 64GB DIMMs.
B. Add 12x 32GB DIMMs.
C. Remove existing memory modules.
D. Shutdown the Database Server if running.
E. Add 16x 64GB DIMMs.
F. Memory cannot be expanded on Exadata X9M-2 Database Servers.
G. Add 16x 32GB DIMMs.
H. Add 32x 64GB DIMMs.
I. Add 24x 32GB DIMMs.

Answer: C,D,E

Explanation:
1. Remove existing memory modules: Before adding new memory modules, the existing memory modules should be removed.
2. Add 16x 64GB DIMMs: The new DIMMs should be added, in this case is 16 DIMMs of 64GB each, which will expand the memory to the highest configuration available.
3. Shutdown the Database Server if running: The Database Server should be shutdown before adding new memory modules in order to prevent any possible data loss or corruption.

NEW QUESTION # 32
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Free PDF 1Z0-902 - The Best Reliable Oracle Exadata Database Machine X8M Implementation Essentials Test Cost

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q27-Q32):

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