Oracle Exadata 1z0-485

1) Which statement accurately describes when redo log file

writes take place?

When using IORM, which statement accurately describes when redo log file writes take place?

A. Based on the priority of the user

B. Immediately

C. Based on the resource group of the user

D. Based on the intradatabase resource plan

2) Which statement accurately describes when redo log file

writes take place?

When using IORM, which statement accurately describes when redo log file writes take place?

A. Based on the priority of the user

B. Immediately

C. Based on the resource group of the user

D. Based on the intradatabase resource plan

3) What would be the best way to ensure that batch Jobs do not

impact performance of online queries that use the same

database?

What would be the best way to ensure that batch Jobs do not impact performance of online

queries that use the same database?

A. Configure IORM to disable Flash Cache usage for batch workload.

B. Build a Database Resource Management Plan, giving priority to query workload.

C. Deploy Instance Caging to control batch jobs.

D. Configure and enable Parallel Query.

E. Configure resource plans by using the I/O Resource Manager on the storage cells, giving

priority to query workload.

4) Which CellCLI command is used to conclude that a storage

server can be taken offline without impacting database

availability?

Which CellCLI command is used to conclude that a storage server can be taken offline without

impacting database availability?

A. LIST GRIDDISK ATTRIBUTES name, asmDeactivationOutcome;

B. LIST CELLDISK ATTRIBUTES name, raid Level;

C. LIST CELL ATTRIBUTES cellsrv Status, flash Cache Mode;

D. LIST CELLDISK ATTRIBUTES name, raidLevel, asmModeStatus;

E. LIST GRIDDISK ATTRIBUTES name, status;

5) Which three statements accurately describe update of

software on Exadata Database Machine?

Which three statements accurately describe update of software on Exadata Database Machine?

A. The Oracle Database patchset software (for example, 11.2.0.3) requires the Exadata-specific

version.

B. Rolling patching is faster than non-rolling patching, but database down time is longer.

C. The Oracle Database software on Exadata is updated using standard OPatch and the Oracle

Universal Installer.

D. Running Exadata with different storage server software versions is supported, but should be

minimized to rolling patching scenarios.

E. The database server operating system software (other than kernel and OFED) may be installed

or updated from non-Exadata sources

F. Storage server updates require access to an Unbreakable Linux Network (ULN) based

repository.

6) Identify two tasks that the Database Resource Manager can

perform, which the I/O Resource Manager cannot.

Identify two tasks that the Database Resource Manager can perform, which the I/O Resource

Manager cannot.

A. Manage I/O based on the application that is connected to the database.

B. Manage the number of parallel sessions for a query.

C. Manage I/O and CPU between databases on the same cluster or physical database host.

D. Terminate database sessions when certain limits have been reached.

E. Manage the throughput of an I/O-bound application based on the service name used for the

connection.

7) Identify the relevant steps in the correct order for activating

an Auto Service Request (ASR) configuration.

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

8) Which two data outputs are valid for Exadata storage cell

performance analysis? Select the two correct choices that

apply?

When running OS Watcher, which two data outputs are valid for Exadata storage cell performance

analysis? Select the two correct choices that apply?

A. lostat

B. mpstat

C. netstat

D. pkginfo

E. label

9) Which two statements are true about CellCLI?

Which two statements are true about CellCLI?

A. Using a CellCLI command, you can change the SNMP subscribers or add multiple SNMP

subscribers.

B. Using CellCLI, you can stop and start the ASM instances that are using the grid disks on the

Exadata storage cell.

C. With a simple CellCLI command, you can synchronize changes to all the storage cells in the

Exadata realm.

D. Using a CellCLI command, you can see whether grid disks are being used by ASM or not.

E. You cannot use CellCLI to gather the serial numbers of physical disks.

10) Why is ASM High redundancy an important configuration

choice when rolling Exadata Storage Server patching is

planned?

Why is ASM High redundancy an important configuration choice when rolling Exadata Storage

Server patching is planned?

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

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

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

patching.

D. Normal redundancy provides the same protection during rolling patching, so High redundancy

is not important inthis case

11) Identify the set of factors that will affect this calculation.

You are calculating the storage capacity that your customer will require on their ZFS Backup

Appliance. Identify the set of factors that will affect this calculation.

A. database size, full/incremental cycle, RPO (Recovery Point Objective), and RTO (Recovery

Time Objective)

B. database size, retention period, RPO (Recovery Point Objective), and compression

C. database size, full/incremental cycle, compression, and retention period

D. database size, compression, and backup window

E. full/incremental cycle, retention period, and ZFS Backup Appliance model

12) Which three migration options are available when you

migrate a database from the Big Endian format system to

Exadata?

Which three migration options are available when you migrate a database from the Big Endian

format system to Exadata?

A. Data Pump Export and Import

B. transportable database

C. transportable tablespaces

D. Data Guard

E. Insert as Select

13) Identify a recommended configuration to set up Auto

Service Request (ASR) for Exadata.

Identify a recommended configuration to set up Auto Service Request (ASR) for Exadata.

A. Install ASR Manager on Exadata Database Server.

B. Install ASR Manager on Exadata Storage Server.

C. ASR is not recommended for Exadata; the Oracle Configuration Manager is preferred.

D. Install ASR Manager on a Standalone Server.

14) What are two impacts of selecting high redundancy over

normal redundancy for your diskgroups?

What are two impacts of selecting high redundancy over normal redundancy for your diskgroups?

A. High redundancy provides more usable storage.

B. Normal redundancy provides more usable storage.

C. High redundancy gives you better I/O performance.

D. High redundancy provides High Availability (HA) during disk failure and rolling Storage Server

patching

E. Normal redundancy provides HA during rolling Storage Server patching.

15) Which two statements are true about Exadata memory

capabilities?

Which two statements are true about Exadata memory capabilities?

A. X3-8 can be purchased in a Half Rack configuration with 2 TB of memory.

B. X3-2 memory can be expanded to 512 GB per node from 256 GB.

C. X3-2 memory can be upgraded to use Flash in the compute nodes.

D. X3-8 memory is fixed at 4 TB per a Rack.

E. X3-2 can be purchased in a Half Rack configuration with 256 GB per node.

16) Which three statements are true about Automatic Degree of

Parallelism (Auto DOP) on Exadata?

Which three statements are true about Automatic Degree of Parallelism (Auto DOP) on Exadata?

A. Auto DOP is an exclusive feature in Exadata, which allows the database optimizer to evaluate

each statement and run it in parallel without special hints.

B. Auto DOP is disabled by default and must be enabled before SQL statements can take

advantage of its features.

C. Auto DOP is enabled by default on Oracle 11gR2, allowing full use of its features.

D. Oracle’s Auto DOP algorithms calculate the Degree of Parallelism based on the table’s block

counts.

E. SQL statements that take advantage of Auto DOP am be identified by using data from Oracle

Automatic Workload Repository (AWR) or Enterprise Manager’s Monitored SQL Executions page.

17) Which two actions are permitted with Exadata Database

Machine?

Which two actions are permitted with Exadata Database Machine?

A. replacing the Ethernet switch with an equivalent 1U48-port Gigabit Ethernet switch

B. installing a second Ethernet switch in the Exadata rack for client access network connectivity

C. replacing the Sun Data Center InfiniBand Switch 36-spine switch with an InfiniBand Gateway

Switch

D. configuring a Linux active-active channel bonding on the database servers by using two 10-

Gigabit Ethernet port

E. configuring a Fibre Channel over Ethernet (FCoE) protocol on database servers

18) Which two statements appropriately describe the backup

and recovery procedures on Exadata?

Which two statements appropriately describe the backup and recovery procedures on Exadata?

A. Cell software backup is automatic and cell recovery is accomplished by using a rescue

procedure.

B. Data stored in a database is backed up and restored by using CellCLI commands.

C. Database server software backup is automatic and recovery is accomplished by using a rescue

procedure.

D. Data stored in a database is backed up and restored by using RMAN commands.

E. Cell software backup is performed through CellCLI and cell recovery is accomplished by using

a rescue procedure.

19) Identify two ways to reduce the risks associated with the

software updates that are performed on a production Exadata

system.

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

production Exadata system.

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

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

C. Updating an engineered system has no risk.

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

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

20) What are three ways to be informed of an Exadata Storage

Server disk failure?

What are three ways to be informed of an Exadata Storage Server disk failure?

A. review of the output of list alerthistory

B. review of the output of select status from vSdatafile

C. review of the ILOM log

D. alert notifications through email when SMTP notification is configured

E. alert notifications in the Enterprise Manager Exadata Plug-In

F. review of database server iostat output

21) Because of the importance of the control file, Oracle

recommends that the control file be __________?

A control file tracks the physical components of a database. It is the root file that the database

uses to find all the other files used by the database. Because of the importance of the control file,

Oracle recommends that the control file be __________?

A. size constrained, to prevent size overruns

B. multiplexed, or have multiple identical copies

C. stored on an HA USB Drive, to ensure that it does not get overwritten

D. managed by EM12c, to ensure proper maintenance

22) Identify two reasons why using external tables for high

performance data loads on Exadata is more advantageous than

SQL*Loader.

Identify two reasons why using external tables for high performance data loads on Exadata is

more advantageous than SQL*Loader.

A. Transformations can be applied directly on the file data using SQL or PL/SQL constructions.

B. External tables allow transparent parallelization inside the database.

C. Parallelizing loads with external tables enables more efficient space management.

D. External tables can take advantage of storage indexes to speed up data loads.

23) Which statement is true about Enterprise Manager 12c for

Exadata?

Which statement is true about Enterprise Manager 12c for Exadata?

A. EM Agents are installed on each database and storage node.

B. EM Agents should not be installed on Exadata. Remote monitoring is the best practice.

C. EM Agents can communicate to storage cells via SSH.

D. The Exadata Plug-In for monitoring switches is installed in each EM Agent.

E. Storage cells communicate directly to the EM Management Server via SNMP and/or SMTP.

24) What are the three customer options for hosting the

Platinum Services Advanced Support Gateway?

What are the three customer options for hosting the Platinum Services Advanced Support

Gateway?

A. Install on Exadata Engineered System.

B. Provide individual x86 64-Bit gateway hardware.

C. Install in Oracle Virtual Machine with required hardware.

D. Install on Oracle Database Appliance.

E. Purchase the recommended x86 64-Bit gateway hardware from Oracle.

25) They are asking you for the key characteristic of DBFS on

Exadata.

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

key characteristic of DBFS on Exadata.

A. DBFS in an Exadata environment is faster than an NFS mount system because of the Smart

Scan performance gains.

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

C. DBFS offers tremendous I/O bandwidth.

26) Which statement is true about instance caging setup?

Which statement is true about instance caging setup?

A. Instance caging is the right approach to make sure that database instances are not stealing

memory from each other.

B. The CPU Resource Manager and IORM need to be enabled to make instance caging to work

as expected.

C. Database instances need to be restarted to make changes to cpu_count effective.

D. For a system with 16 threads, the sum of cpu_count for all databases should not be higher than

32 to prevent oversubscribing

E. The init.org parameter resource_manager_plan should be set.

27) Which statement is true about Oracle compression?

Which statement is true about Oracle compression?

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

concurrently.

B. A partitioned table can define the use of Advanced Compression or HybridColumnar

Compression for each partition.

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

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

Compression.

28) Use the information in the image below to identify two

reasons their backups are still slow.

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.

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.

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

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

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

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

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

29) Which compression technique would you recommend?

If your customer wants to save storage space by compressing tables that are read frequently but

rarely updated, which compression technique would you recommend?

A. OLTP

B. ARCHIVE HIGH

C. QUERY HIGH

D. ARCHIVE LOW

E. BASIC

30) 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?

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?

A. using GoldenGate

B. using SQL Developer migration tools

C. using Data Guard Physical Standby

D. using cross-platform transportable tablespaces

E. using incremental cross-platform RMAN restores

31) Which statement is true about the Exadata CELLBOOT

USB?

You are concerned about how recovery from a failed Exadata Storage Server would work. Which

statement is true about the Exadata CELLBOOT USB?

A. Exadata automatically copies OS binaries and configuration files from another cell during

patching to sync the internal USB.

B. Regular Exadata Storage Server patches make sure that the internal USB is updated so that it

can be used for recovery.

C. Changes to network configuration files are possible without usingipconf.plas long as all relevant

files are updated.

D. Some space from the CELLBOOT USB is used for cache metadata when write back flash

cache is enabled.

E. Each patch that is performed on Exadata storage servers requires manual resync of the

CELLBOOT USB.

32) Which three approaches would you use to evaluate the

efficiency of Exadata Flash Cache?

After migrating from legacy disk-based configuration, which three approaches would you use to

evaluate the efficiency of Exadata Flash Cache?

A. Review the Flash Hit rate via cellcli metrics.

B. Compare Optimized Physical Reads and Total Read Requests in Automatic Workload

Repository (AWR).

C. Review the IOSTAT data that is gathered from each compute node by OS Watcher.

D. Evaluate the Smart Flash Logging efficiency metrics via CellCLI.

E. Check I/O latency on large I/O to Temp in AWR.

33 ) Which table compression technique will not work on

Exadata without licensing the Oracle Advanced Compression

Option?

Which table compression technique will not work on Exadata without licensing the Oracle

Advanced Compression Option?

A. COMPRESS

B. COMPRESS BASIC

C. COMPRESS FOR OLTP

D. COMPRESS FOR QUERY

E. COMPRESS FOR ARCHIVE

34) Identify four significant changes when a backup of Exadata

compute nodes must be performed.

Identify four significant changes when a backup of Exadata compute nodes must be performed.

A. application of operating system patches

B. before shutdown to preserve storage indexes

C. application of Oracle patches

D. reconfiguration of significant operating system parameters

E. installation or reconfiguration of significant non-Oracle software

F. storage server rebalancing

G. addition of an Exadata storage expansion rack

35) MYOBJ_STATE’S region index is populated with high and

low values for the OBJECT_ID column during the I/O request.

Storage indexes are unique to the Exadata Database Machine and their primary goal is to reduce

the amount of I/O required to service I/O requests for Exadata Smart Scan. Put the following steps

in order:

1. The Exadata cell services software conducts I/O requests on I MO storage regions.

2. cellsrv checks the high and low values, and determines the storage region does not contain

any values meeting the predicate.

3. The database is started.

4. Physical I/O to the region is bypassed if the query selection falls outside the high/low storage

index storage.

5. A query is issued against the MYOBJ_CTRL table that has a predicate OBJECT_ID=1500.

6. A subsequent query is Issued against the MYOBJ_CTRL table that has a predicate

OBJECT_ID=2234.

7. MYOBJ_STATE’S region index is populated with high and low values for the OBJECT_ID

column during the I/O request.

A. 3. 7, 5, 2, 1, 6, and 4

B. 3, 7, 1, 5, 6, 2, and 4

C. 3, 6, 1.7, 2, 5 and 4

D. 3, 5, 1, 7, 6, 2. And 4

37) Put the following steps in the right order:

You are asked to enable Write Back Flash Cache for one of your customers X3-2 Full Rack in a

rolling fashion. Put the following steps in the right order:

A) Set flashCacheMode to writeback.

B) Inactivate all grid disks and shut down cellsrv.

C) Drop the Flash Cache.

D) Verify that cell for flashcacheMode is writeback.

E) Create the Flash Cache.

F) Start up cellsrv and activate all grid disks.

G) Check grdidksk asmdeactivationoutcome and asmmodestatus for all grid disks to ensure that

all grid disks on all cells are set to Yes and online, respectively.

A. G.

B, C, A, F, E, D, and G

B. G, A, B, C, F, E, D,and G

C. G, C, B, A, F, E, D, and G

D. G, E,C, B, F, A, D,and G

38) You need to perform to re-image the compute node?

The Exadata compute node, exadbs04, has been having issues for some time. The server had to

be repaired and you just received a new server. Your LVM snapshot was corrupt and now the

compute node must be re-image with an Oracle Support installation image. Which three tasks

would you need to perform to re-image the compute node?

A. Mount the LVM backup image across the network and recover the system.

B. Remove exadbs04 from the RAC cluster and all associated Oracle Homes from the central

inventory.

C. Create a CELLBOOT USB Flash Drive using an external USB drive.

D. Reboot the new server using a bootable recovery image from the external USB drive.

E. Reconfigure all site-specific settings (host name, IP addresses, NTP server, and so on).

39) Which Exadata feature uses Flash as a parallel write cache

to Disk Controller Cache?

Which Exadata feature uses Flash as a parallel write cache to Disk Controller Cache?

A. Exadata DRAM

B. InfiniBand network cache

C. high performance SAS disks

D. Smart Flash Log

E. Hybrid Columnar Compression

40) Which is a best practice for High Availability (HA) in an

Exadata environment?

Which is a best practice for High Availability (HA) in an Exadata environment?

A. Checksums performed on the Exadata Storage Server ensure logical consistency of block

content.

B. When a standby database is in place, DB_BLOCK_CHECKING is not required and thus not

recommended.

C. Oracle Exadata Storage Server Software HARD checks operate transparently after enabling

DB_BLOCK_CHECKSUM on a database.

D. Due to the different architecture that Exadata has with storage servers, compared to regular

Storage Area Network, DB_LOST_WRITE_PROTECT need not be set.

E. Stretched RAC is the best alternative for Exadata that combines both HA and DR into one.

41) Identify the correct steps required to upgrade a 1/8th rack of

Exadata to a 1/4th rack.

Identify the correct steps required to upgrade a 1/8th rack of Exadata to a 1/4th rack.

A.

Remove the doors of the 1/8th rack.

Add the new servers.

Cable the Database Servers in the rack.

Cable the Exadata Storage Servers in the rack.

Close the rack.

B.

Activate all cores by using a software command.

Activate all hard drives and flash drives.

Create the grid disks.

Expand the Oracle ASM diskgroups.

Review the new configuration.

C.

Remove the doors of the 1/8th rack.

Add an additional Sun Datacenter InfiniBand Switch.

Add the new servers.

Cable the Database Servers in the rack.

Cable the Exadata Storage Servers in the rack.

Close the rack.

Configure the new hardware.

D.

Activate all cores by using a software command.

Activate all hard drives and flash drives.

42) How does partition pruning, a 11gR2 database feature, help

to improve performance on an Exadata Database Machine?

How does partition pruning, a 11gR2 database feature, help to improve performance on an

Exadata Database Machine?

A. Partition pruning allows you to reduce a 5 TB I/O operation to a much smaller I/O operation and

therefore, enables a much faster return of information.

B. Using partition pruning can force the optimizer to use that method instead of Smart Scan.

Partitioning in Exadata should be used wisely

C. Partition pruning is not a supported option in the11gR2database codethatruns on an Exadata

Machine, due to issues with Cost Based Optimizer plans.

D. Partition pruning allows you to reduce the size of the physical table by reducing fragmentation

within the individual tables.

E. Partition pruning allows you to reduce a 5 TB I/O operation to a larger I/O operation and

therefore, forces the use of the Smart Scan technology.

43) Which two statements are true?

You are measuring the I/O savings provided by storage indexes for Table A. One of your scripts

displays the I/O savings as a result of the storage indexes. Which two statements are true?

SQL> select count (*) from transmap.mymap_comp

2 where map_id between 400 and 500;

COUNT(*)

—————————————103000

Elapsed: 00:00:00.08

SQL> select b.name, a.value/1024/1024 value

from vSmystat a, vSstatname b,

where b.statistic# = a.statistic#

and b.nafne in (•cell physical IO bytes eligible for predicate offload’,

•cell physical IO interconnect bytes’,

•cell physical IO bytes saved by storage index’,

•cell physical IO interconnect bytes returned by smart scan’) order by 1;

Statistic Value (MB)

——————————————————————————————— —————–cell

physical IO bytes eligible for predicate offload 2,255 .09

cell physical IO bytes saved by storage index .00

cell physical IO interconnect bytes 1.72

cell physical IO interconnect bytes returned by smart scan 1.68

A. The storage indexes were disabled using the disable_storage_INDEX Parameter.

B. Storage Index data is not on the Cell Server’s region index memory structures yet because this

predicate has not been used.

C. Since the database was started, no quires were run against this table with the same predicate.

D. The storage indexes reduced the amount of physical I/O bytes significantly for this query.

44) What is the best way to recover from a storage cell failure

when content in both system disks is lost?

You are concerned about how to recover from a failed Exadata Storage Server. What is the best

way to recover from a storage cell failure when content in both system disks is lost?

A. Database Machine Administrators should be prepared by creating a backup using

dbserver_backup.sh.

B. Database Machine Administrators should be prepared by creating a backup to an NFS file

location as described in the owners guide.

C. Any USB can be plugged in to create a backup.

D. Be sure that you have a backup by running make_cellboot_usb.sh in /opt/oracle.cellos.

E. Use the Exadata Storage Server rescue functionality that Is provided on the CELLBOOT USB

flash drive.

F. Re-imaging the cell is the only option.

45) What manual action must you take to restore the system to

full redundancy?

When an Exadata Storage Server hard disk failure alert is received, what manual action must you

take to restore the system to full redundancy?

A. Replace the disk and run MegaCLI to rebuild the degenerate mirror.

B. No manual action is required because Automatic Storage Management (ASM) fast mirror

resync is automatic

C. No manual action is required because ASM rebalancing is automatic.

D. Replace the disk and manually copy the mirror extents to the new drive.

E. Run RMAN REPAIR FAILURE.

46) When should you use Hybrid Columnar Compression?

When should you use Hybrid Columnar Compression?

A. always

B. on large active tables where deeper compression is desired

C. on tables or partitions that have fairly static data

D. on every table where Advanced Compression is not used

47) Which three approaches would you use to improve this

scenario?

High-disk IOPS (I/Os per second) rates are leading to longer execution times.

Which three approaches would you use to improve this scenario?

A. Enable Write-Back Flash Cache due to heavy DBWR usage.

B. Enable Write-Back Flash Cache due to heavy LGWR usage.

C. Swap hard disks to High Capacity disks.

D. Tune the application to reduce I/O requests.

E. Leverage IORM to give priority to critical workloads.

48) Identify the three values to which the cell_flash_cache

attribute can be set.

Identify the three values to which the cell_flash_cache attribute can be set.

A. read

B. WRITE

C. KEEP

D. DEFAULT

E. NONE

49) In looking to improve query performance for your Data

Warehouse, select the best way that Exadata’s Flash Cache

feature can be leveraged?

In looking to improve query performance for your Data Warehouse, select the best way that

Exadata’s Flash Cache feature can be leveraged?

A. Enable Smart Flash Log.

B. Execute alter table … cell_flash_cache=keep on heavily scanned tables.

C. Enable Write Back Flash Cache.

D. Create an ASM diskgroup on Flash Cache and move the indexes from disk to Flash.

50) Give them three ways in which it will benefit their Exadata

Database Machine support experience and potentially resolve

some of the issues…

Your customer is hesitant to install the Oracle Configuration Manager in their environment. Give

them three ways in which it will benefit their Exadata Database Machine support experience and

potentially resolve some of the issues they are having with the length of time it is taking Oracle to

process their Exadata Service Requests (SRs).

A. Host information can be gathered and sent to Oracle for license compliance.

B. Potential issues can be addressed before they impact operations.

C. Priority handling can be extended for SRs, with attached configuration.

D. Exadata patching cannot be done successfully without the Oracle Configuration Manager.

E. Root cause analysis can be accelerated.

51) Which Exadata feature eliminates unnecessary data

transfers between database nodes and storage?

Which Exadata feature eliminates unnecessary data transfers between database nodes and

storage?

A. database views

B. InfiniBand networking

C. Flash Cache

D. high performance SAS2 disk drives

E. cell offloading

52) Which statement is true about Exadata Storage Servers?

Which statement is true about Exadata Storage Servers?

A. The Exadata Storage Server automatically deletes old diagnostic and metric files.

B. Exadata requires a running database instance on all storage servers and database servers.

C. Redundancy for user data stored in a database that is running on Exadata is achieved with

RAID5.

D. Communication between a database and an Exadata storage flows over low latency 10 Gigabit

Ethernet.

E. Exadata uses network affinity to determine which storage server data is written.

53) Which two statements are true about migrating your

database to Exadata?

Which two statements are true about migrating your database to Exadata?

A) Because Exadata uses InfiniBand, in order to migrate your database to Exadata, you must

have InfiniBand on the system that you are migrating from.

B) Using Data Guard Physical Standby to migrate from an 11.1 database to Exadata is beneficial

because it allows you to adopt HCC during migration.

C) ASM and database best practice configuration supplied during Exadata deployment should be

retained during and after migration,

D) Logical migration methods allow more flexibility than physical methods to change the database

structure for best performance. ***

E) All indexes should be dropped when migrating to Exadata.

54) How would you execute CellCLI commands and scripts?

How would you execute CellCLI commands and scripts?

A. using SQL*Plus on database nodes

B. by CellCLI commands executed on the database nodes

C. using third party tools after installing the CellCLI RPM plug-in

D. directly executing the commands and scripts on the Exadata storage cell

E. remotely by connecting to Port 1521 using SSL

55) Which two statements describe correct network

configuration for Exadata Database Machine?

Which two statements describe correct network configuration for Exadata Database Machine?

A. The InfiniBand network subnet manager runs on all database servers to achieve High

Availability.

B. Oracle Clusterware communication is configured to use the management network.

C. The InfiniBand network interfaces on Linux servers are configured using active-passive

bonding.

D. Database connections to the SCAN listener route through the Ethernet switch in the Exadata

rack.

E. Database servers are deployed with three logical network interfaces configured: management,

client access, and private.

56) When would be the best time to run an Exadata health

check (exachk)?

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

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

B. after patching, after upgrades, and after backups

C. only when advised by Oracle Support

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

E. only after a hardware failure

F. monthly and after a hardware failure

56) What are two choices that a customer must make that

impact diskgroup creation?

What are two choices that a customer must make that impact diskgroup creation?

A. What is the level of redundancy required?

B. What OS will be run?

C. Where will disk backups be written?

D. How many databases will run on the cluster?

58) Which two are the best options that you would

recommend?

Your customer wants to increase the size of the DATA diskgroup on the Exadata systems. The

customer is currently using 600 GB disks. Which two are the best options that you would

recommend?

A. adding a High Capacity Storage expansion rack

B. expanding the Exadata rack from a Half Rack to a Full Rack

C. moving underutilized grid disks from the RECO diskgroup to DATA

D. adding a ZFS storage appliance

E. adding a High Performance Storage expansion rack

59) Which two DML operations will add rows compressed by

Hybrid Columnar Compression (HCC) to a table that is

created to use HCC?

Which two DML operations will add rows compressed by Hybrid Columnar Compression (HCC) to

a table that is created to use HCC?

A. INSERT

B. insert with an append hint

C. UPDATE

D. CREATE TABLE AS SELECT

60) Which two statements are true about troubleshooting failed

patching activities?

Which two statements are true about troubleshooting failed patching activities?

A. Dependency issues found during yum updates require rolling back to a previous release before

retrying.

B. Bundle patches applied using opatch auto cannot roll back only the database or the grid

infrastructure home.

C. Failed OS patches on database servers can be rolled back.

D. Failed storage cell patches are rolled back to the previous release automatically.

E. Database server OS updates can be rolled back using opatch auto -rollback.

F. Dependency issues found during yum updates should be ignored using the force option.

61) Identify three Exadata Storage Server software processes

and their purpose?

Identify three Exadata Storage Server software processes and their purpose?

A. CELLSRV: The Cell Server is responsible for servicing disk I/O and predicate processing

offload.

B. CELLSRV: The Cell Server is responsible for balancing workload to other storage servers.

C. MS: The Management Server is responsible for storage cell management and configuration.

D. MS: The Management Server is responsible for starting a local Enterprise Manager agent.

E. RS: The Restart Server is responsible for Automatic Storage Management (ASM) instance

restart.

F. RS: The Restart Server is responsible for CELLSRV and MS monitoring and restart.

62) Which two attributes describe key benefits of the

InfiniBand network?

Which two attributes describe key benefits of the InfiniBand network?

A. All Exadata database servers have a direct path link to each Exadata Storage Server.

B. Cell-to-cell communication uses Reliable Datagram Sockets (RDS) over InfiniBand to achieve

low latency.

C. Expanding from two Full racks to four only requires adding an external InfiniBand switch to be

at the top of the fat-tree topology.

D. Each InfiniBand link provides 10 Gigabits of bandwidth.

E. Oracle’s interconnect protocol uses direct memory access (DMA) to eliminate buffer copies and

reduce CPU use.

63) What would you do to get a full picture of CPU utilization

on the entire Exadata RAC cluster?

The mpstat output from OS Watcher shows a database node as being 90% idle on an average.

What would you do to get a full picture of CPU utilization on the entire Exadata RAC cluster?

A. Average the mpstat id1 output from all the nodes.

B. Ask application users if they have noticed a slowdown in screen response.

C. Look for an increase in batch job servicing times.

D. A & B above

64) Identify three best practices for applying

asmdeactivationoutcome es on Exadata Database Servers and

Exadata Storage Servers?

Identify three best practices for applying asmdeactivationoutcome es on Exadata Database

Servers and Exadata Storage Servers?

A. Backing up database servers and storage cells is not recommended before performing planned

maintenance.

B. Database server updates can be rolled back using the the “yum downgrade” procedure.

C. Bundle patches do not require testing before being installed on a production system.

D. It is recommended that Exadata systems with Data Guard configured use the “Standby First”

patching approach.

E. Patching should never be interrupted due to a connection drop. It is therefore recommended

that you use VNC or the screen utility.

F. Before patching cells in a rolling manner, you must check asmdeactivationoutcome

amModestatus and make sure that cells on all disks are online and that disks can be deactivated.

65) What are two other ways in which you can connect?

You get a Host Unreachable error when you attempt to connect to a server through a network

terminal command line. What are two other ways in which you can connect?

A. Use the ILOM Web GUI.

B. Use the dcli command at the root prompt on a database node.

C. Attach a terminal device to the back panel of the server with a serial cable.

D. Connect by using SQL *Plus.

E. Log in as root on the database node using the Net1 IP address.

66) What happens when you execute this command?

Consider this CellCLI command:

CellCLI> CREATE GRIDDISK ALL HARDDISK PREFIX=data, size=423G;

Which two statements describe what happens when you execute this command?

A. It creates one 423 GB grid disk on the first available cell hard disk.

B. It creates one 423 GB grid disk on each available cell hard disk.

C. It creates grid disks on the outermost 423 GB that is available on each hard disk.

D. It creates grid disks on the innermost 423 GB that is available on each hard disk.

E. It creates an Exadata Smart Flash Cache on all flash drives.

67) Consider the following setup: User A1 belongs to resource

group High on Database

Consider the following setup:

User A1 belongs to resource group High on Database A.

User B2 belongs to resource group Low on Database B.

User C3 is a user on Database C without any DBRM setup.

DBRM setup:

Database A: Resource group High gets 80% and Low gets 20%.

Database B: Resource group High gets 60% and Low gets 40%.

IORM setup:

Database A: Share=20, limit=5

Database B: Share=30, limit=10

Database C: 5 shares

Total number of shares in the IORM setup = 100

What percent of I/O will each database user theoretically be using when the Exadata storage unit

I/O throughout is used 100% and no other databases but A, B, and C are running?

A. Al = 36%, B2=18%, and C3=9%

B. Al = 33%, B2=33%, and C3=33%

C. AI = 10%, B2=5%, and C3=20%

D. Al = 8%, B2=12%, and C3=5%

E. Al = 5%, B2=10%, andC3=85%

68) Which two statements are true about enabling write-back

flash cache?

Which two statements are true about enabling write-back flash cache?

A. When enabling write-back flash cache in a non rolling manner, it is important to ensure that

asmdeactivatonoutcome is set to YES and asmModestatus is set to ONLINE for all grid disks.

B. Before using write-back flash cache, you need to verify the minimum required versions.

C. Before write back-flash cache is enabled, you need to drop the Flash Cache first.

D. The setting flash Cache Mode should be set to writeback by updating cellinit.ora and restarting

cellsrv.

E. When enabling write-back flash cache in a rolling manner, dcli should be used to inactivate the

grid disks on all cells first.

69) Which of the software changes listed are permitted on

Exadata Storage Servers?

Consider the following software changes that are performed manually on a Linux server:

1. Changes for Linux kernel firewall configuration

2. Changes for custom performance monitoring tools

3. Changes for security scan tools

4. Changes for Linux system performance optimization

Which of the software changes listed are permitted on Exadata Storage Servers?

A. 1, 2, 3, and 4

B. only 3

C. none

D. only 2

E. only 1 and 2

F. only 2 and 3

70) Which option should be implemented?

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

“on hold” 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?

A. DBRMon the CC database

B. DBRM on all the databases

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

D. IORM and DBRM

71) Which is the best location to point your customer to, for

finding the latest Exadata patches?

Which is the best location to point your customer to, for finding the latest Exadata patches?

A. owner’s guide

B. Patch database in MyOracle Support

C. MyOracle Support note 888828.1

D. MyOracle Support for database patches, ULN for OS patches, and Sun Support for Server and

InfiniBand patches.

72) Which option is true?

Exadata Database Machine offers an Intelligent Platform Management Interface for the various

components in the Exadata product. Which option is true?

A. IPMI can be used to remotely start and stop servers.

B. IPMI can be used to remotely log in to the operating system.

C. IPMI commands can be executed by using SNMP traps.

D. IPMI settings can be secured by backing up the Oracle Linux installation on the storage system.