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Accurate Oracle - Valid 1z1-902 Test Sample

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    Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q41-Q46):

    NEW QUESTION # 41
    Which are two valid reasons for executing an X9M-2 Exadata storage server rescue procedure?

    • A. corruption in the / (root) filesystem
    • B. corruption in a normal or high redundancy ASM diskgroup
    • C. accidental loss of all data from all griddisks in a storage server
    • D. the failure of physical disk 1
    • E. the failure of both physical M.2 disks
    • F. moving all disks from one cell to another as part of a chassis-level component failure
    • G. the failure of physical disk 0 and 11

    Answer: A,G

    Explanation:
    The rescue procedure is necessary when system disks fail, the operating system has a corrupt file system, or there was damage to the boot area. If only one system disk fails, then use CellCLI commands to recover. In the rare event that both system disks fail simultaneously, you must use the Exadata Storage Server rescue functionality provided on the Oracle Exadata Storage Server Software CELLBOOT USB flash drive.


    NEW QUESTION # 42
    Which two statements are true about applying updates on Exadata systems?

    • A. Failed database server updates are rolled back to a working state on a previous release automatically.
    • B. For regular Exadata updates, yum automatically installs a non-UEK kernel, which can be selected to boot from grub.
    • C. Failed storage server updates are automatically rolled back to a previous release.
    • D. To speed up applying storage server updates in a rolling manner, updating two storage servers simultaneously is recommended.
    • E. When running a "yum update" for a new Exadata release, all other repositories should be disabled.
    • F. Updating kernel and RDMA packages on storage cells should be prevented by excluding them with the yum -exclude option.

    Answer: A,C

    Explanation:
    When applying updates on Exadata systems, database server updates are automatically rolled back to a working state on a previous release if the update fails. This ensures that the system can be restored to a working state in the event of a failed update. Additionally, storage server updates are also automatically rolled back to a previous release in the event of a failed update.
    This is documented in the Oracle Exadata Database Machine X9M Implementation Essentials official text book and more information can be found on the Oracle support website [1][2].


    NEW QUESTION # 43
    You have been asked to investigate why an Exadata Database Server stopped communicating on the client network for 10 minutes over the past weekend.
    Which command would help investigate this?

    • A. # /opt/oracle.SupportTools/exachk/exachk -from _17:00:00 -to _23:59:00
    • B. # /opt/oracle.ExaWatcher/GetExaWatcherResults.sh -from _17:00:00 -to _23:59:00
    • C. # /opt/oracle.SupportTools/ibdiagtools/netcheck/runDiagnostics.pm -from _17:00:00 -to _23:59:00
    • D. $ ${ORACLE_HOME}/suptools/tfa/release/tfa_home/bin/tfact1 -from _17:00:00 -to _23:59:00

    Answer: B

    Explanation:
    AccordingtoOraclesdocumentationoneoftheutilitiesfordiagnosticsand
    Explanation:
    repair of Oracle Exadata Storage Server is ExaWatcher, which collects operating system and network metrics on database servers and storage servers. The utility is located in the /opt/oracle.ExaWatcher directory1.
    To investigate why an Exadata Database Server stopped communicating on the client network for 10 minutes over the past weekend, you can use the GetExaWatcherResults.sh script to collect and analyze ExaWatcher data for a specified time range1.
    Therefore, the command that you should use to investigate this is:
    /opt/oracle.ExaWatcher/GetExaWatcherResults.sh -from _17:00:00 -to _23:59:00


    NEW QUESTION # 44
    Which two activities are supported on the storage servers in an Exadata Database Machine?

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

    Answer: C,E

    Explanation:
    According to the web search results123, the storage servers in an Exadata Database Machine are mainly used for processing data at the storage level and offloading some SQL operations from the database servers. Therefore, the two activities that are supported on the storage servers are:
    1. changing the root password
    2. configuring secure shell user equivalency for the cellmonitor user
    https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmso/exadata-introduction.html


    NEW QUESTION # 45
    Which three statements are true about Oracle Configuration Manager (OCM) for an Exadata Database Machine?

    • A. Collected configuration information can be uploaded manually to Oracle.
    • B. It is mandatory to install OCM on at least one database server.
    • C. It collects configuration information on demand.
    • D. Collected configuration information can be uploaded automatically to Oracle.
    • E. It collects configuration information automatically.
    • F. It is mandatory to install OCM on all database servers.

    Answer: A,B,E


    NEW QUESTION # 46
    ......

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