[Free] 2018(Jan) EnsurePass Testinsides Oracle 1z0-027 Dumps with VCE and PDF 21-30

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Oracle Exadata Database Machine X3 Administration

Question No: 21

Which is true regarding Enterprise Manager monitoring and configuration?

  1. Agents must be deployed on the- storage servers, in case all the database servers are down.

  2. Monitoring the power distribution units (PDUs) is done by Enterprise Manager agents, but additional ethernet cables are required to connect the PDUs to the internal network switch in the Database Machine

  3. Monitoring the power distribution units (PDUs) is done by Enterprise Manager agents

    without, any additional network configuration.

  4. Agents may be deployed on the storage servers, in case all the database servers are down.

  5. Monitoring the power distribution units (PDUS) is done by Enterprise Manager agents but additional ethernet cables are required to connect the PDUs to the corporate network switch.

Answer: C Explanation:

Note:

  • The following prerequisites must be met before you can deploy the plug-in:

    Set and validate the preferred credentials on all Agents where you want to deploy the plug- in. This is essential in order to deploy the plug-in.

    The PDU firmware version must be 1.02 or later.

  • This plug-in will be used to monitor PDU#39;s actual current value of Phase1, Phase2, and Phase3 and raises appropriate events if they have crossed the different threshold values. Each PDU will have a plug-in instance added to its own OEM Grid Control agent.

  • By deploying the plug-in to your Grid Control environment, you gain the following management features:

    Monitor PDU targets.

    Raise alerts and violations based on thresholds set on monitoring and configuration data. Provide rich out-of-box metrics and reports based on the gather

    Reference: Oracle Enterprise Manager System Monitoring Plug-In Installation Guide for

    Exadata Power Distribution Unit

    Question No: 22

    You plan to migrate an existing production database supporting online transaction processing (OLTP) workloads to the Exadata Database Machine. The database currently supports an application requiring fast response times, which satisfies stringent

    requirements, and most of the application queries use index access to the tables in the application schema.

    For which case would you consider dropping indexes to allow Smart Scans to occur?

    1. Drop non-constraint indexes if Smart Scan occurs instead of an index access path on the corresponding table.

    2. Drop non-constraint indexes if Smart Scan performs better than index unique scans on the corresponding table.

    3. Drop non-constraint indexes if Smart Scan performs better than index range scans on the corresponding table.

    4. Drop non-constraint Indexes if Smart Scan performs better than any index scans on the corresponding table.

    Answer: D

    Question No: 23

    You must apply patches and patch bundles in a rolling fashion, if possible, on the components of your Database Machine.

    You use RAC for your database and also use Data Guard, having standby database on another Database Machine.

    You wish to have scripts that contain the appropriate command to patch your environment. Your patch bundle is on the first database server and is located at /u01/stage.

    You have downloaded the oplan utility to the first database server and run the following:

    $ORACLE_HOME/oplan/oplangenerateApplySteps /u01/stage Which two are true concerning oplan?

    1. It will generate instructions for patching only storage servers.

    2. It will generate instructions for patching all the components on the Database Machine.

    3. It will generate instructions for patching the RAC Oracle Home on the primary location.

    4. It will generate instructions for patching the Data Guard environment on the standby location.

    5. It will generate instructions for patching the Grid Infrastructure home on the primary location.

    Answer: C,E

    Explanation: Oplan generates instructions for all of the nodes in the cluster.

    Note:

    • Oplan is a utility that facilitates you with the application of bundle patches on Exadata compute nodes via Opatch. This new utility helps you with the patch process by generating step-by-step instructions telling you how to apply a bundle patch in your environment.

    • Exadata is much more than a quot;database-in-a-box.quot; It is a set of compute nodes (think RAC node servers) combined with ultra-fast infiniband (…and 10GB ethernet, and multiple 1GB ethernet) and storage nodes.

      Incorrect:

      Not D: There is no support for Oracle DataGuard

      Question No: 24

      Consider the following sequence of CELLCLI commands and SQL statements:

      Ensurepass 2018 PDF and VCE

      All CELLCLI commands and SQL statements are executed successfully without warnings. Which statement is true about the I/O performance of the DATA01 ASM diskgroups?

      1. The DATA01 diskgroups has better performance because the DATA01 griddisks were created first.

      2. The DATA02 ASM diskgroup has better performance because the DATA02 diskgroups was created first.

      3. The DATA01 diskgroup has better performance because the DATA01 griddisks are created on interleaved cell disks.

      4. The performance of both diskgroups is balanced because they are created on

      interleaved griddisks.

      Answer: A

      Explanation: Griddisks are the fourth layer of abstraction, and they will be the Candidate Disks to build your ASM diskgroups from. By default (interleaving=none on the Celldisk layer), the first Griddisk that is created upon a Celldisk is placed on the outer sectors of the underlying Harddisk. It will have the best performance therefore

      Incorrect:

      Not D: non-interleaved is the default.

      Question No: 25

      You have configured a multi-rack Database Machine with two X3-8 full racks all in a single cluster and storage grid.

      Which two are true regarding the servers on which Enterprise manager agents must be deployed in order to monitor all components of the multi-rack Database Machine?

      1. On only one database server in the first rack

      2. On all storage servers in all racks

      3. On at least two storage servers in the first rack

      4. On all database servers in the first rack

      5. On only one database server in second rack

      6. On all database servers in second rack

      7. On at least two storage servers in the second rack

      Answer: D,F Explanation:

      Note:

    • The Enterprise Manager agent must be deployed to all compute nodes of the Database Machine.

    • Oracle#39;s documentation uses the term compute node when referring to the database server tier of the platform.

    • The Exadata Database Machine runs Oracle Database 11g Real Application Cluster. The cluster and the database run on the servers known as database nodes or compute nodes (or simply “nodes”).

    • Cells and compute nodes are not shared between partitions.

    • Compute nodes in same partition share the same Cluster.

      Question No: 26

      Your database Machine has the exachk utility pre-installed and you decide to use it periodically, to validate the installation against Oracle’s recommended best practices.

      Which two actions could you take to do this?

      1. Use a cron job on a database node to run it at regular intervals.

      2. Rut it once from a database node and it will then perform periodic monitoring automatically.

      3. Use a cron job on each cell to run it at regular intervals.

      4. Run it once on each cell and it will then perform periodic monitoring automatically.

      5. Create a Job in Enterprise Manager to run the exachk utility at regular intervals.

      Answer: A,E

      Question No: 27

      Which two are true about the use of DBFS in a Database Machine environment?

      1. DBFS must be used to bulk load data into a database on the Database Machine if the staging area requires Exadata based shared storage.

      2. DBFS must be used to have a POSIX compliant shared storage solution that is accessible from the database servers on a Database Machine.

      3. DBFS must be used to bulk load data into a production database on the Database Machine.

      4. DBFS must use the DBFS_DG diskgroup for any DBFS store.

      5. DBFS must be used to have a POSIX-compliant Exadata-based shared storage solution.

      Answer: C,D

      Question No: 28

      You plan to migrate an Oracle database that supports an online transaction processing (OLTP) workload to your Database Machine.

      Following are details for the source database: Database version: 10.2.0

      Byte order: Big Endian HP-UX (64-bit) Database size: 24 TB

      Storage: ASM with 1 MB allocation unit size Which two are supported migration methods?

      1. Physical migration using ASM online Migration

      2. Physical migration using Transportable Database

      3. Logical migration using Oracle Streams

      4. Local migration using Oracle Streams

      5. Logical migration using logical standby

      Answer: C,E Explanation:

      There are several techniques for migrating data to a Database Machine. Migration can be done

      using Oracle Recovery Manager (RMAN) to backup from traditional storage and restore the data

      onto Exadata. Oracle Data Guard can also be used to facilitate a migration. This is done by first

      creating a standby database based on Exadata storage. The standby can be using Exadata storage

      and the production database can be on traditional storage. By executing a fast switchover, taking

      just seconds, you can transform the standby database into the production database. This provides

      a built-in safety net as you can undo the migration very gracefully if unforeseen issues arise.

      Transportable Tablespaces (B) and Data Pump may also be used to migrate to Exadata.

      Any

      technique used to move data between Oracle Databases can be used with Exadata.

      Question No: 29

      Identify two permitted uses of external InfiniBand connections to a Database Machine.

      1. To connect an ExaLogic Elastic Cloud Machine

      2. To monitor the InfiniBand network using Enterprise Manager

      3. To connect an external tape library

      4. To use a bonded client access network

      5. To use a bonded management network

      Answer: A,C

      Explanation: A: Combining the Oracle Exalogic Elastic Cloud with the Oracle Exadata Database Machine for SAP NetWeaver

      The InfiniBand fabric that spans Exalogic and Exadata components provides the following key ways of

      simplifying and accelerating SAP NetWeaver installations running on Exalogic

      Note: A high specialized database networking protocols connects all the components inside an Exadata Database Machine. External connectivity to the Exadata Database Machine is provided through standard 1 Gigabit and 10 Gigab Multiple X3 even larger configurations.

      Question No: 30

      You plan to monitor the status of the motherboard, memory, power, fans, and network cards on the database nodes in your Database machine using Enterprise Manager.

      Where must you set the thresholds for these hardware components and why to assure that sensor readings, faults any related alerts, are visible in Enterprise Manager?

      1. Set thresholds in ILOM and in Enterprise Manager because they are not preset

        anywhere and must be set in both places

      2. Set thresholds only in ILOM because they are not preset anywhere but need only be set in ILOM.

      3. No thresholds need be set because they are preset in the ILOM and in Enterprise Manager.

      4. No thresholds need ho set because they are preset in the ILOM and these are sufficient for monitoring.

      Answer: D Explanation: Note:

    • The ILOM management interface is also integrated with Oracle Enterprise Manager Ops Center.

    • ILOM Features and Functionality include: Remote hardware monitoring which include:

      Monitor customer-replaceable units (CRUs) and fieldreplaceable units (FRUs), including power supplies, fans, host bus adapters (HBAs), disks, CPUs, memory, and motherboard

    • The ILOM-based service processor (SP) receives error telemetry about error events that occur within the major system components on the host (CPU, memory, and I/O hub) and the environmental subsystem within the chassis (such as fans, power supplies, and temperature). The components and conditions are then diagnosed as fault events and captured in the ILOM event log.

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