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Oracle 1z1-902 exam, also known as the Oracle Exadata Database Machine X8M Implementation Essentials exam, is a certification exam that is designed for individuals who want to demonstrate their expertise in implementing and managing Oracle Exadata Database Machine X8M systems. 1Z0-902 exam covers a wide range of topics related to Oracle Exadata Database Machine X8M, such as configuring and managing Exadata storage servers, implementing backup and recovery solutions, and monitoring and tuning Exadata systems.

Oracle 1Z0-902 (Oracle Exadata Database Machine X8M Implementation Essentials) Certification Exam is a comprehensive test that evaluates an individual’s skills and knowledge in implementing and managing the Oracle Exadata Database Machine X8M. 1Z0-902 Exam is designed for professionals who work with Oracle Exadata Database Machine X8M and want to validate their skills and knowledge in implementing and managing the technology. 1Z0-902 exam covers a wide range of topics, including Exadata architecture, installation, configuration, and management.

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Oracle 1Z0-902 exam is a certification test that focuses on the implementation of the Oracle Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification is aimed at individuals who possess the necessary skills and knowledge to implement the Exadata Database Machine X8M in a variety of environments, from small to large enterprises. 1Z0-902 Exam is designed to test the candidate's knowledge of the Exadata Database Machine X8M architecture, configuration, and management.

Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q63-Q68):

NEW QUESTION # 63
You use Enterprise Manager to monitor all the components of your Exadata Database Machine.
Recently, you discovered that certain asmdisks were offline in one of the diskgroups used by the rac database called prod.
In which two sources would you find diagnostic messages related to this problem?

A. Enterprise Manager Alerts on the Exadata Storage Server Grid home page
B. alert logs for the ASM instances
C. alert logs for Enterprise Manager
D. alert logs for the prod database instances
E. Enterprise Manager Alerts on the ILOM home page for cell connectivity problems for the prod database instances

Answer: B,D

Explanation:
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources, you can find diagnostic messages related to this problem in the alert logs for the ASM instances and the alert logs for the prod database instances. The alert logs for the ASM instances will provide information related to the offline asm disks, while the alert logs for the prod database instances will provide information related to whether the prod database instances are connected to the ASM instance or not.

NEW QUESTION # 64
Which two statements are correct about adding an additional database server to a physical Exadata X9M Database Machine using Oracle Exadata Deployment Assistant (OEDA)?

A. Do not proceed if the OEDA Validate Configuration File step displays an error message about missing files p6880880.zip.
B. Executing /opt/oracle.supportTools/reclaimdisks.sh -free -reclaim on each Exadata X9M Database server is required to reclaim disk space and perform partition reconfiguration.
C. It is required to install OEDA on the first new database server.
D. The applyElasticConfig.sh script performs network configuration for the new servers. The new servers are restarted at the end of the process.
E. In order to configure the servers with Oracle Exadata Deployment Assistant (OEDA), the new server information must be entered in OEDA, and the configuration file must contain existing nodes.

Answer: B,D

Explanation:
The execute /opt/oracle.supportTools/reclaimdisks.sh -free -reclaim on each Exadata X9M Database server is required to reclaim disk space and perform partition reconfiguration.
The applyElasticConfig.sh script performs network configuration for the new servers. The new servers are restarted at the end of the process.

NEW QUESTION # 65
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. Database Statistics (v$ View)
B. Exadata Metrics (LIST METRICCURRENT)
C. PMEM Cache User Reads section in AWR Report
D. Database lOs section in AWR Report
E. PMEM Cache Space Usage section in AWR Report

Answer: B,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 # 66
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?

A. 768GB
B. 1536GB
C. 1024GB
D. 512GB
E. 2048GB
F. 384GB

Answer: E

NEW QUESTION # 67
Your system administrator reports an amber, non-blinking light on one of your Exadata storage disks. You immediately execute the 'list physicaldisk where diskType=HardDisk and status=failed DETAIL' command on the Exadata storage system and the specified disk is indeed reported as failed. Platinum Support has not been enabled for this system. Enterprise Manager Cloud Control is monitoring the system.
What is the next step that you should perform before you do anything else?

A. Download and run the latest exadiag tool.
B. Check the database to see if any rebalance operations are active.
C. Wait for a blue light to appear on the disk if the rebalance operation is running.
D. Call Oracle Support and make an appointment so that the drive can be replaced.
E. Wait for the email of the failure that Exadata or Enterprise Manager will send.
F. Ask the system administrator to replace the broken disk with a spare.

Answer: C

Explanation:
According to Oracle documentation1, Exadata Storage software has a complete set of automated operations for hard disk maintenance, when a hard disk has failed or has been flagged as a problematic disk. It will initiate a rebalance operation to redistribute data across other disks and mark the failed disk with an amber light.

NEW QUESTION # 68
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