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Oracle Exadata Database Machine and Cloud Service 2018 Implementation Essentials

Question No: 11

Why is ASM High redundancy an important configuration choice when rolling Exadata Storage Server patching is planned?

  1. High redundancy protects from partner disk failure while a cell is offline being updated.

  2. High redundancy forces ASM rebalance before allowing disks to be taken offline.

  3. High redundancy speeds up ASM fast mirror resync when a cell is brought back online after patching.

  4. Normal redundancy provides the same protection during rolling patching, so High redundancy is not important in this case

Answer: A

Explanation: To ensure redundancy during a rolling upgrade of the Exadata Storage Server Software, MAA recommends ASM high redundancy disk groups.

Question No: 12

A customer has three databases named CC. FIN, and DW. The CC database is for their CallCenter. Even a slight decrease in the response time of the database would mean more people quot;on holdquot; in their data center. The orders received through the CallCenter are stored in the Finance (FIN) database. Both databases, CC and FIN, serve as sources for the Data Warehouse (DW) database. All databases use the same Automatic Storage Management (ASM) diskgroup and therefore, the same physical disks on Exadata storage. The customer wants to dynamically control the resources that are available for the CallCenter database because this has direct impact on their operations?

Which option should be implemented?

  1. DBRM on the CC database

  2. DBRM on all the databases

  3. IORM, because DBRM cannot be changed for an existing session

  4. IORM and DBRM

    Answer: B

    Question No: 13

    Identify the relevant steps in the correct order for activating an Auto Service Request (ASR) configuration.

    1. Add SNMP traps manually or using OneCommand.

    2. Install ASR Manager.

    3. Activate a node on ASR Manager.

    4. Validate the configuration.

    5. Register ASR Manager with Oracle.

A. 2, 5, 1, 3, and 4

B. 2, 4, I, 3, and 5

C. 5, 2, 4, 1, and 3

D. 5, 4, 2, 1, and 3

Answer: A

Explanation: 2.Install Oracle Auto Service Request (ASR) Packag 5.Register the ASR Manager

1.Add SNMP Trap Destinations for Multiple Servers Using the dcli Utility

  1. Activate Node on the ASR Manager

    Question No: 14

    Which two migration will result in the least down time for a physical or logical migration of a database with active users during the migration?

    1. using GoldenGate

    2. using SQL Developer migration tools

    3. using Data Guard Physical Standby

    4. using cross-platform transportable tablespaces

    5. using incremental cross-platform RMAN restore

Answer: A,C

Reference: http://www.oracle.com/technetwork/middleware/goldengate/overview/ggzerodowntimedata baseupgrades-174928.pdf

Question No: 15

When running OS Watcher, which two data outputs are valid for Exadata storage cell performance analysis? Select the two correct choices that apply?

  1. lostat

  2. mpstat

  3. netstat

  4. pkginfo

  5. label

Answer: A,C Explanation: Example:

# A few find examples

# \( -name quot;*.*quot; \) \

# \( -name quot;*vmstat*.*quot; -o -name quot;*iostat*.*quot; \) \

# \( -name quot;*vmstat*.*quot; -o -name quot;*iostat*.*quot; \) -mmin -60 \

# \( -name quot;*vmstat*.*quot; -o -name quot;*iostat*.*quot; -o -name quot;*netstat*.*quot; \) -mtime -8 \

Question No: 16

Your customer would like to use DBFS in their Exadata environment. They are asking you for the key characteristic of DBFS on Exadata.

  1. DBFS in an Exadata environment is faster than an NFS mount system because of the Smart Scan performance gains.

  2. Tens of thousands of files are the perfect use case for DBFS on Exadata.

  3. DBFS offers tremendous I/O bandwidth.

Answer: A

Question No: 17

Identify two ways to reduce the risks associated with the software updates that are performed on a production Exadata system.

  1. Patch all systems at once instead of one at a time.

  2. Test on an Exadata system that is identical to the production system first.

  3. Updating an engineered system has no risk.

  4. Patch on the standby system first by using Data Guard Standby First Patch Apply.

  5. Create a system-wide firmware and software snapshot first.

    Answer: B,D

    Explanation: Patch Installation and Testing Guidelines

    1. Review patch documentation

      • README and referenced Support Notes

    2. (B) Validate in test environment

      • Verify patch installation (HealthCheck Note 1070954.1)

      • Verify functionality and performance

      • Automate

      • Define and test fallback plans

    3. Apply in production environment

      • (D) Data Guard Standby-First Patch Apply

      • Monitor for regressions Support Note 1262380.1

      Question No: 18

      Which statement is true about Oracle compression?

      1. A non-partitioned table can use Advanced Compression and Hybrid Columnar Compression concurrently.

      2. A partitioned table can define the use of Advanced Compression or Hybrid Columnar Compression for each partition.

      3. Hybrid Columnar Compression can be defined for a single column.

      4. A partitioned table can use only Advanced Compression or only Hybrid Columnar Compression.

Answer: B

Question No: 19

When would be the best time to run an Exadata health check (exachk)?

  1. before patching, before upgrades, before backups, and on a regular basis

  2. after patching, after upgrades, and after backups

  3. only when advised by Oracle Support

  4. before and after patching, when advised by Oracle Support, and on a regular basis

  5. only after a hardware failure

  6. monthly and after a hardware failure

Answer: D

Explanation: #1: Check for updates frequently.

#2: Execute before amp; after system changes.

#3: Make part of regular planned maintenance

Question No: 20

Your customer has purchased their brand new Exadata Database Machine X3-2 Full rack to achieve 20-TB-per-hour backups on their 300 TB database.

Ensurepass 2018 PDF and VCE

You have been called to determine why they are not able to achieve even half that rate. Use the information in the image below to identify two reasons their backups are still slow.

  1. LVM snapshots are not configured properly on the Database Server.

  2. The Media Server to Tape Library transfer is causing a bottleneck.

  3. The number of tape drives is causing a bottleneck.

  4. Exadata backups are being performed using RMAN over the 10 Gigabit Ethernet network.

  5. The number of database servers is causing a bottleneck.

    Answer: B,C

    Explanation: The following bottlenecks will be reached first if using InfiniBand fabric to media server:

    1. Media server to tape library SAN transfer rate

    2. Number of tape drives

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