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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q26-Q31):

NEW QUESTION # 26
Examine these commands:
1. Execute "crscti stop cluster -all" as the grid user from one database server.
2. Execute "crscti stop cluster -all" as root from one database server.
3. Power off all network switches.
4. Execute "crscti stop cluster" as root from one database server.
5. Execute "crscti stop cluster" as the grid user from one database server.
6. Power off the rack using the power switches on the PDUs.
7. Execute "shutdown -h now" on all database servers.
8. Execute "shutdown -h now" on all Exadata storage servers.
Which is the correct order or the required commands to completely power off an Exadata Database Machine in an orderly fashion?

• A. 4, 7, 8, 3, and 6
• B. 2, 8, 7, 3, and 6
• C. 1, 8, 7, 3 and 6
• D. 2, 7, 8, and 6
• E. 5, 8, 7, and 6

Answer: E

Explanation:
Option 5 stops the clusterware on all database servers as the grid user3.
Option 8 shuts down all Exadata storage servers using their ILOM interfaces1.
Option 7 shuts down all database servers using their ILOM interfaces1.
Option 6 powers off the rack using the power switches on the PDUs2.

NEW QUESTION # 27
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 must be invoked with the -rolling argument with all database and storage servers listed in a single input file.
• B. patchmgr must be invoked with the -rolling argument. Each component type must be upgraded independently of the other.
• C. patchmgr will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption.
• D. patchmgr cannot apply updates in a rolling manner, you must manually apply patches with the dbnodeudpate and cellupdate tools if high availability is required.

Answer: C

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 # 28
Which four actions should you take before proceeding with applying updates to your Exadata Database Machine?

• A. Run patchmgr --all_comp -autofix -autobackup -upgrade -rolling.
• B. Run the appropriate patchmgr preqequisite check step for each component being updated.
• C. Run exachk and resolve only WARNINGS that you have not seen before.
• D. Consult My Oracle Support note 888828.1 to determine the current recommended Exadata software release.
• E. For database servers, perform a server backup using patchmgr -dbnodes db_list_file -backup -rolling.
• F. Check the Exadata Critical Issues My Oracle Support note 1270094.1 for any issues not added to the latest version of exachk.

Answer: B,C,D,F

Explanation:
According to Oracle.com documents or resources, the four actions that you should take before proceeding with applying updates to your Exadata Database Machine are:
1. Consult My Oracle Support note 888828.1 to determine the current recommended Exadata software release123.
2. Check the Exadata Critical Issues My Oracle Support note 1270094.1 for any issues not added to the latest version of exachk453.
3. Run exachk and resolve only WARNINGS that you have not seen before3.
4. Run the appropriate patchmgr preqequisite check step for each component being updated3.

NEW QUESTION # 29
Which three of the following options are available for database consolidation on Exadata?

• A. Multiple databases spanning a Bare Metal and Virtual Machine cluster to provide resource isolation and consolidation concurrently
• B. Multiple pluggable databases in one or more container databases on a Virtual Machine or Bare Metal cluster
• C. Multiple Virtual Machine clusters supporting a single database for greatest resource isolation
• D. Bare Metal deployment with one database per database server
• E. Multiple Databases on a cluster
• F. A single database with one or more schema per application

Answer: B,C,E

NEW QUESTION # 30
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. Wait for the email of the failure that Exadata or Enterprise Manager will send.
• 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. Download and run the latest exadiag tool.
• E. Call Oracle Support and make an appointment so that the drive can be replaced.
• F. Ask the system administrator to replace the broken disk with a spare.

Answer: F

NEW QUESTION # 31
......

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