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Home > Oracle > Oracle Certifications > 1Z0-902
Oracle 1Z0-902  Exam Questions & Answers
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Oracle 1Z0-902 Exam Questions & Answers


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  • Vendor: Oracle

    Exam Code: 1Z0-902

    Exam Name: Oracle Exadata Database Machine X9M Implementation Essentials

    Certification Provider: Oracle

    Total Questions: 60 Q&A ( View Details)

    Updated on:

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1Z0-902 Online Practice Questions and Answers

Questions 1

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. The installation cannot proceed until two power feeds are available per PDU.

C. A splitter cable can be used to provide power to all PDU cables.

D. 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.

Show Answer

Correct 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

Questions 2

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, 2, 1, 8, 4, 5

B. 6, 8, 3, 4, 2, 1

C. 6, 3, 1, 9, 7, 8

D. 6, 1, 2, 7, 5, 8

Show Answer

Correct Answer: A

Explanation: The steps and the order in which they should be executed to create an ACFS Filesystem for use as a staging area for data loads are: asmcrad volcreate -G data -s 1024G acfs_dataload_vol : This command creates a new volume in the data diskgroup, with a size of 1024 GB, and named acfs_dataload_vol. asmcmd vol info -G data acfs_dataload_vol | grep Device: This command will show the device name of the newly created volume /usr/sbin/mkfs -t acfs /dev/asm/ac:fs_dataload_vol-123: This command creates a new ACFS filesystem on the volume created in step 1 sudo /u01/app/19.0.0.0/grid/bin/srvctl start filesystem -device /dev/asn/acfs_dataload_vol-123: This command starts the filesystem created in step 3 sudo chovn -R oracle:dba /mnt/acfs_dataload_vol: This command changes the ownership of the /mnt/acfs_dataload_vol to the oracle:dba user. /sbin/acfsutil snap create -v data_load /mnt/acfs_dataload_vol: This command creates a snapshot of the filesystem to be used as a staging area. acfsutil size +2S0G -d /dev/asm/acfs_dataload_vol-123 /mnt/acfs_dataload_vol/ : This command increases the size of the filesystem by 2GB /u01/app/19-G.O-Q7grid/bin/srvctl add filesystem -device /dev/asm/acfs_dataload_vol-

Questions 3

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. Ask the system administrator to replace the broken disk with a spare.

B. Check the database to see if any rebalance operations are active.

C. Call Oracle Support and make an appointment so that the drive can be replaced.

D. Wait for the email of the failure that Exadata or Enterprise Manager will send.

E. Download and run the latest exadiag tool.

F. Wait for a blue light to appear on the disk if the rebalance operation is running.

Show Answer More Questions

Correct Answer: F

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.

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