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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q50-Q55):

NEW QUESTION # 50
You want to monitor how a large production table is accessed. Especially, you are interested to see how the access on that particular table leverages the benefits of the Exadata Platform.
Which two actions are NOT appropriate for that purpose?

A. You run the CellCli-command list activerequest , filtering for the attributes ioReason and objectNumber, that you specify as 'Smart Scan' and the Object ID of your table from DBA_OBJECTS.
B. YOU query VSSYSTEM_EVENTS and filter for the event 'cell physical IO interconnect bytes returned by smart scan', associated to your table.
C. You query v$segment_statistics and filter for the Object ID of your table from dba_objects and the the column STATISTIC_NAME='optimized physical reads'.
D. You query v$SYSTAT and filter for the statistic 'cell smart table scan', associated to your table.

Answer: B,C

NEW QUESTION # 51
You are updating your Exadata X9M-2 Elastic Database Machine with 6 database servers and 12 High Capacity Storage Servers. You will be using patchmgr to apply updates across the entire machine while still maintaining database availability.
Assuming you are driving patchmgr from an external server, which statement is true about the execution phase?

A. patchmgr will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption.
B. patchmgr cannot apply updates in a rolling manner, you must manually apply patches with the dbnodeudpate and cellupdate tools if high availability is required.
C. patchmgr must be invoked with the -rolling argument with all database and storage servers listed in a single input file.
D. patchmgr must be invoked with the -rolling argument. Each component type must be upgraded independently of the other.

Answer: A

Explanation:
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1], patchmgr can be used to apply updates in a rolling manner while still maintaining database availability. It will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption. This is done by invoking patchmgr with the -rolling argument and specifying the component groups in the input file.

NEW QUESTION # 52
You are hardening the security posture of your Exadata Database Machine. Before disabling ssh access to the storage servers, what should you do to enable REST access to the MS process?

A. The MS Process on the storage servers is natively endowed with REST services, but are not enabled by default.
B. Install Oracle Rest Data Services on each Storage server and install the MS APEX application.
C. The MS Process on the storage servers is natively endowed with REST services and are enabled by default, however, appropriate roles and users should be created to ensure security.
D. Install Oracle Rest Data Services on each Database server and install the MS APEX application.

Answer: C

Explanation:
The MS process on Exadata storage servers is natively endowed with REST services and these services are enabled by default. However, it is important to create appropriate roles and users to ensure security when accessing these services. This way, it is possible to disable ssh access to the storage servers, and still enable REST access to the MS process. It's not necessary to install Oracle Rest Data Services on each Database or Storage server or install the MS APEX application, the MS process on the storage servers already have REST services by default.

NEW QUESTION # 53
I/O performance of the prod database on your Exadata Database Machine has degraded slightly over the past month. The database has been allocated to the OLTP I/O Resource Management (IORM) category.
Which two monitoring tools might be useful in examining I/O performance for the prod database?

A. cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk
B. I/O-specific dynamic performance views such as v$iostat_fiie, v$iostat_function, and v$iostat_consumer_group from the prod database instances using SQL *p1us
C. OS I/O metrics using Enterprise Manager host pages for the storage servers
D. OS I/O metrics using OS tools such as iostat on the database servers
E. OS I/O metrics using OS tools such as iostat on the storage servers

Answer: A,B

Explanation:
According to the Oracle documentation1, two monitoring tools that might be useful in examining I/O performance for the prod database are:
cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk (D). This tool can help you monitor the I/O Resource Management (IORM) metrics and identify any bottlenecks or imbalances in the storage layer.
I/O-specific dynamic performance views such as v$iostat_fiie, v$iostat_function, and v$iostat_consumer_group from the prod database instances using SQL *plus. These views can help you monitor the I/O activity and latency at the file, function, and consumer group level.

NEW QUESTION # 54
Which two statements are false about backup to ZFS Storage Appliance (ZFSSA)?

A. ZFSSA may connect directly to the Exadata 100Gb RoCE network switches.
B. Top of Rack (ToR) switches are managed as part of the hardware stack and software levels are upgraded during the patching process.
C. ZFS Snapshots can provide rapid cloning of development and test environment.
D. When backing up multi-rack systems, sharing Exadata X9M switches is recommended.

Answer: A,D

Explanation:
A) ZFS Storage Appliance (ZFSSA) can't connect directly to the Exadata 100Gb RoCE network switches. ZFSSA uses Fibre Channel protocol to connect to the Exadata storage cells.
C) When backing up multi-rack systems, sharing Exadata X9M switches is not recommended. Each rack should have its own switches to minimize the risk of data loss due to switch failure.
Review the safety guidelines.
Unpack Oracle Exadata Rack.
Let the Exadata acclimatize for 24 hours.
Place Exadata in its allocated space.
Stabilize the Exadata Rack.
Power on Exadata PDU A.
Power on Exadata PDU B.
This order ensures that the necessary safety precautions are taken before installing the Exadata Database Machine, and that the machine is allowed to acclimate to its new environment before being powered on.

NEW QUESTION # 55
......

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1Z0-902 Valid Exam Tips & Cert 1Z0-902 Guide

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q50-Q55):

TOP 1Z0-902 Valid Exam Tips - Oracle Oracle Exadata Database Machine X8M Implementation Essentials - Trustable Cert 1Z0-902 Guide

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