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Oracle 1Z0-902 certification provides a professional advantage to those seeking to expand their industry skills and improve their value to their organizations. As Exadata implementation becomes increasingly critical for a range of industries, professionals can differentiate themselves by obtaining the Oracle Certification. Oracle Exadata Database Machine X8M Implementation Essentials certification confirms that one has the knowledge and expertise required for successful implementation and management of the Exadata Database Machine X8M.

Oracle 1Z0-902, also known as the Oracle Exadata Database Machine X8M Implementation Essentials Exam, is a certification exam that is designed to test the knowledge and skills of IT professionals in implementing and managing Oracle Exadata Database Machine X8M systems. 1Z0-902 exam is intended for individuals who have experience in implementing and managing Oracle Exadata systems, including database administrators and system administrators. 1Z0-902 Exam covers a wide range of topics, including Exadata architecture, installation and configuration, administration and maintenance, backup and recovery, performance tuning, and security.

Oracle 1Z0-902 certification exam is designed to test the skills and knowledge of IT professionals who are responsible for implementing and managing the Oracle Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification exam is intended for individuals who have experience working with Oracle database systems and want to enhance their expertise in implementing and managing Exadata Database Machine X8M.

Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q30-Q35):

NEW QUESTION # 30
Examine this list of software components:
1. Oracle KVM Guest
2. Oracle Enterprise Manager Agent (OMA)
3. ASM instance
4. RDBMS instance
5. Automatic Diagnostic Repository Command Interpreter (ADRCI)
6. CELLCLI
7. Cell Server(CELLSRV)
8. diskmon
9. Restart Server (RS)
10. Management Server (MS)
What is the correct location where these software components can run in the standard Exadata Database Machine deployment?

A. 1, 2, 3, 4, 5, 8, 9 and 10 run on the database servers; 5, 6,7, 9 and 10 run on the Exadata storage servers.
B. 1, 2, 3, 4, 8 and 9 run on the database servers; 5, 6, 7, 9 and 10 run on the Exadata storage servers.
C. 1, 2, 3, 4, 9 and 10 run on the database servers; 5, 6, 7, 8, 9, and 10 run on the Exadata storage servers.
D. 2, 3, 4, 8, and 10 run on the database servers; 1, 5, 6, 7and 9 run on the Exadata storage servers.
E. 3, 4, 8, and 10 run on the database servers; 1, 2, 5, 6, 7 and 9 run on the Exadata storage servers.

Answer: A

Explanation:
Oracle KVM Guest: This is a virtual machine that runs on top of Oracle Linux KVM hypervisor. It can be used to run Oracle Database or other applications on Exadata Database Machine2. Therefore, it runs on the Database Servers.
Oracle Enterprise Manager Agent (OMA): This is a software agent that communicates with Oracle Enterprise Manager Cloud Control and provides monitoring and management capabilities for Exadata Database Machine2. Therefore, it runs on both Database Servers and Storage Servers.
ASM instance: This is an instance of Oracle Automatic Storage Management (ASM), which is a volume manager and a file system for Oracle Database files. It manages disk groups that span across multiple Storage Servers2. Therefore, it runs on the Database Servers.
RDBMS instance: This is an instance of Oracle Database that processes SQL statements and executes transactions. It uses ASM disk groups to store data files, control files, redo log files, etc2. Therefore, it runs on the Database Servers.
Automatic Diagnostic Repository Command Interpreter (ADRCI): This is a command-line tool that enables you to view diagnostic data stored in the Automatic Diagnostic Repository (ADR). ADR is a file-based repository for database diagnostic data such as trace files, alert logs, etc2. Therefore, ADRCI runs on both Database Servers and Storage Servers, depending on where the ADR is located.
CELLCLI: This is a command-line interface that enables you to configure and manage Exadata Storage Server Software. It allows you to perform tasks such as creating disk groups, monitoring cell health, applying patches, etc2. Therefore, it runs on the Storage Servers.
Cell Server(CELLSRV): This is a process that runs on each Storage Server and handles I/O requests from the Database Servers. It implements Exadata Smart Scan , which offloads data-intensive SQL operations from the Database Servers to the Storage Servers2. Therefore, it runs on the Storage Servers.
diskmon: This is a process that monitors the status of disks and flash devices on each Storage Server. It reports disk failures and performs automatic disk reclamation2. Therefore, it runs on the Storage Servers.
Restart Server (RS): This is a process that manages automatic restarts of critical processes such as CELLSRV , MS , or OMA in case of failures. It also handles graceful shutdowns and startups of all processes on each server2. Therefore, it runs on both Database Servers and Storage Servers.
Management Server (MS): This is a process that provides management services for each server such as collecting metrics , logging events , executing commands from CELLCLI , etc2. Therefore, it runs on both Database Servers and Storage Servers

NEW QUESTION # 31
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. The installation can go ahead, no change is required.
B. A splitter cable can be used to provide power to all PDU cables.
C. 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.
D. The installation cannot proceed until two power feeds are available per PDU.

Answer: A

Explanation:
According to the Oracle Exadata Database Machine X9M-2 Data Sheet1, each PDU has two power input cables that can be connected to separate power sources for redundancy. However, if only one power source is available per PDU, then a single cable can be used to provide sufficient power for normal operation.
https://www.oracle.com/a/ocom/docs/engineered-systems/exadata/exadata-x9m-2-ds.pdf

NEW QUESTION # 32
Which dbmcli command is NOT valid on Exadata X9M?

A. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'"
B. dbmcli -e "LIST IBPORT DETAIL"
C. dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' "
D. dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15"

Answer: D

Explanation:
1. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'" is valid command and it is used to list the historical values for metrics where the name starts with "DS_."
2. dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' " is valid command and it is used to list the current value of the metric named "DS_TEMP"
3. dbmcli -e "LIST IBPORT DETAIL" is valid command and it is used to list the InfiniBand ports and details of the Exadata X9M.
"dbmcli" is a command-line tool that is used to manage and monitor the Exadata Database Machine. It allows you to perform various tasks such as managing the database, storage, and network components, and monitoring the performance and health of the machine. The command "dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15" is not a valid command, it is not supported on Exadata X9M.

NEW QUESTION # 33
Which two activities are supported on the storage servers in an Exadata Database Machine?

A. installing an alternative package manager
B. configuring secure shell user equivalency for the cellmonitor user
C. upgrading a device driver for hard disks when inserting a replacement disk after a hard disk failure
D. changing the root password
E. upgrading the Storage Server software package using rpm

Answer: C,E

Explanation:
Exadata Database Machine is a preconfigured and optimized for database workloads. The storage servers in an Exadata Database Machine are used to store database data, and support activities such as upgrading a device driver for hard disks when inserting a replacement disk after a hard disk failure and upgrading the Storage Server software package using rpm. These activities are related to maintain the storage servers performance and security. Changing the root password, installing an alternative package manager, and configuring secure shell user equivalency for the cellmonitor user are activities that can be performed on any Linux machine, but they are not specific to Exadata Database Machine.

NEW QUESTION # 34
What are two recommended configuration best practices for backup and recovery on Exadata?

A. When off-site long-term backup retention is needed, use Oracle Database Backup Cloud Service as a low-cost, offsite scalable storage for a disaster recovery solution.
B. Placing the backup network on dedicated switches installed in the top of the rack (ToR) has the benefits of isolating the backup network from other workloads and providing a greater level of control.
C. Even if the backup was limited to writing to four tape drives, eight channels could be specified to expedite the restore process.
D. The internal Recovery Appliance backup and restore processing is optimized when the RMAN FILESPERSET parameter is set to 1 for the level 1 incremental backup set.

Answer: B,D

Explanation:
A recommended configuration best practice for backup and recovery on Exadata is to place the backup network on dedicated switches installed in the top of the rack (ToR). This provides a greater level of control and isolates the backup network from other workloads. Additionally, even if the backup is limited to writing to four tape drives, it is recommended to specify eight channels to expedite the restore process.
Another best practice is to set the RMAN FILESPERSET parameter to 1 for the level 1 incremental backup set. This will optimize the internal Recovery Appliance backup and restore processing. Finally, if off-site long-term backup retention is needed, Oracle Database Backup Cloud Service should be used as a low-cost, offsite scalable storage solution for a disaster recovery solution.

NEW QUESTION # 35
......

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q30-Q35):

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