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Oracle 1Z0-902 certification exam is a valuable credential for professionals who work with the Oracle Exadata Database Machine X8M. It demonstrates their expertise in implementing, configuring, and managing this powerful database appliance. Earning this certification can open up new career opportunities and enhance your professional credibility in the field of database administration.

Oracle 1z1-902 is a certification exam designed to test the knowledge and skills of IT professionals in implementing and managing the Oracle Exadata Database Machine X8M. Exadata is a powerful platform developed by Oracle that combines hardware and software components to deliver a high-performance database solution. 1Z0-902 Exam is intended for individuals who have experience in implementing Exadata and want to validate their skills.

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q15-Q20):

NEW QUESTION # 15
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, 8 and 9 run on the database servers; 5, 6, 7, 9 and 10 run on the Exadata storage servers.
B. 3, 4, 8, and 10 run on the database servers; 1, 2, 5, 6, 7 and 9 run on the Exadata storage servers.
C. 2, 3, 4, 8, and 10 run on the database servers; 1, 5, 6, 7and 9 run on the Exadata storage servers.
D. 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.
E. 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.

Answer: E

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 # 16
Which two statements are true for the Oracle Exadata Configuration Assistant (OECA)?

A. OECA extends the hardware for the elastic configuration only.
B. OECA reconfigures the size of disk groups and recreates grid disks.
C. OECA's "Add Equipment" input option allows allocation of RU slots for customer equipment.
D. OECA facilitates PDU power selection initially and after equipment addition.
E. OECA allows one XT storage server in the configuration.

Answer: A,D

Explanation:
B and E are true statements for the Oracle Exadata Configuration Assistant (OECA). OECA facilitates PDU power selection initially and after equipment addition, and it allows for the elastic configuration of the hardware. It does not reconfigure the size of disk groups or recreate grid disks, nor does it allow for a single XT storage server in the configuration. The "Add Equipment" input option does allow for the allocation of RU slots for customer equipment.
References for this information can be found in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources.
Search results: [1] Oracle Exadata Database Machine X8-2 [1][2]: Configuration Assistant Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ... [2] The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can be used to ... Add Equipment: This input option allows you to allocate RU slots for ... [3] Oracle Exadata Database Machine X7-2 and X7-2L Installation Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ... [4] The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can be used to ... Power Selection [1][2]: This input option allows you to select PDU power initially ... [5] Oracle Exadata Database Machine X7-2 and X7-2L Installation Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ...

NEW QUESTION # 17
Which two steps concise the path used to communicate with Enterprise Manager from an Exadata Database Machine?

A. SNMP traps for alerts are sent by the storage server RS process to the storage server ILOM.
B. SNM? traps for alerts are sent by the storage server ILOM to the Enterprise Manager agent.
C. SNMP traps for alerts are sent by the storage server MS process to the storage server ILOM.
D. SNMP traps for alerts are sent by the storage server ILOM to the storage server MS process.
E. SNMP traps for alerts are sent by the storage server MS process to the Enterprise Manager agent.
F. SNMP traps for alerts are sent by the storage server RS process to the Enterprise Manager agent.
G. SNMP traps for alerts are sent by the storage server ILOM to the storage server is process.

Answer: B,E

Explanation:
In an Exadata environment, the path of communication for SNMP traps involves:
Management Server (MS) Process to EM Agent: Alerts related to the storage server are generated by the MS process, which then forwards SNMP traps directly to the Enterprise Manager agent, allowing centralized monitoring and alert management.
ILOM to EM Agent: The ILOM on each Exadata storage server can independently send SNMP traps to the EM agent, providing additional hardware-level monitoring and alerting capabilities .
These pathways ensure that alerts from both hardware and software layers reach Enterprise Manager efficiently, supporting proactive management and rapid response to system issues.

NEW QUESTION # 18
You are going to create an ACFS Filesystem for use as a staging area for data loads. Examine the following commands:

What steps and in which order should they be executed?

A. 6, 1, 2, 7, 5, 8
B. 6, 8, 3, 4, 2, 1
C. 6, 2, 1, 8, 4, 5
D. 6, 3, 1, 9, 7, 8

Answer: D

NEW QUESTION # 19
What are two recommended configuration best practices for backup and recovery on Exadata?

A. 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.
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. 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.

Answer: A,B

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 # 20
......

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