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Oracle 1Z0-070 Exam Questions


Vendor Name: Oracle
Certification Name:Exadata
Exam Name:Oracle Exadata X5 Administration

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1Z0-070 Exam Sample Questions:



Which two options should be used to identify a damaged or failing flash card on an X6
Database Machine high-capacity storage server?

 

Using the CELLCLI CALIBRATE command on the storage server after logging in as the
root user

 

Using the CELLCLI LIST LUN DETAIL command as the celladmin user

 

Using the CELLCLI CALIBRATE command on the storage server after logging in as the
celladmin

 

Hardware monitoring using the storage server ILOM


Using the CELLCLI CALIBRATE command on the storage server after logging in as the
root user


Hardware monitoring using the storage server ILOM


The CALIBRATE command runs raw performance tests on cell disks, enabling you to verify
the disk performance before the cell is put online. You must be logged on to the cell as the
root user to run CALIBRATE.
Oracle ILOM automatically detects system hardware faults and environmental conditions
on the server. If a problem occurs on the server, Oracle ILOM will automatically do the
following:
Illuminate the Service Required status indicator (LED) on the server front and back panels.
Identify the faulted component in the Open Problems table.
Record system information about the faulted component or condition in the event log.
References:http://docs.oracle.com/cd/E80920_01/SAGUG/exadata-storage-servercellcli.
htm#SAGUG20617




Which two statements are true about backup performance when using Recovery Manager
(RMAN) on an X5 Database Machine?

 

Backups are fast because the Infiniband network is faster than fiber channel storage, so
RMAN read I/O operations are faster than in traditional storage networks.

 

Backups are fast, because physical I/Os operations are reduced by the use of the
Storage Index by cellsrv.

 

Backups are fast, because data blocks are read from the Database Flash Cache.

 

Backups are fast, because all data blocks are read from the Exadata Smart Flash
Cache.

 

For incremental backups using Block Change Tracking, cellsrv filters blocks and returns
only those that have changed since the last backup.


Backups are fast, because all data blocks are read from the Exadata Smart Flash
Cache.


For incremental backups using Block Change Tracking, cellsrv filters blocks and returns
only those that have changed since the last backup.


D: The storage server software manages the flash cache and can recognize different types
of I/O requests so that non-repeatable data access like RMAN backup I/O does not flush
database blocks from the cache. It also prioritizes frequently accessed block types such as
redo logs, control files, and index root blocks.
E: RMAN block change tracking allows incremental backups to run very quickly andefficiently. With block change tracking, only the areas of the database that have been
modified since the last incremental backup or full backup are read from disk.




Which three are true about Exadata Smart Flash Log?

 

Databases on the Database Machine use Exadata Smart Flash Log by default.

 

I/O Resource Manager database plans can be used to enable or disable Exadata Smart
Flash Log for individual databases.

 

LGWR will not wait for writes to Exadata Smart Flash Log if the write to a disk-based
logfile completes first.

 

I/O Resource Manager category plans can be used to enable or disable Exadata Smart
Flash Log for different I/O categories.

 

The use of Exadata Smart Flash Logs is mandatory for support of production databases.


Databases on the Database Machine use Exadata Smart Flash Log by default.


I/O Resource Manager database plans can be used to enable or disable Exadata Smart
Flash Log for individual databases.


LGWR will not wait for writes to Exadata Smart Flash Log if the write to a disk-based
logfile completes first.


A: Exadata I/O Resource Manager (IORM) has been enhanced to enable or disable Smart
Flash Logging for the different databases running on the Database Machine, reserving
flash for the most performance critical databases.B: The Exadata I/O Resource Manager (IORM) has been enhanced to enable or disable
Smart Flash Logging for the different databases running on the Database Machine.
C: Smart Flash Logging works as follows. When receiving a redo log write request,
Exadata will do parallel writes to the on-disk redo logs as well as a small amount of space
reserved in the flash hardware. When either of these writes has successfully completed the
database will be immediately notified of completion. If the disk drives hosting the logs
experience slow response times, then the Exadata Smart Flash Cache will provide a faster
log write response time.
Conversely, if the Exadata Smart Flash Cache is temporarily experiencing slow response
times (e.g., due to wear leveling algorithms), then the disk drive will provide a faster
response time.
This algorithm will significantly smooth out redo write response times and provide overall
better database performance.




Which two statements are true about the Integrated Lights Out Manager (ILOM) on an
Exadata x5 or x6 Database Machine?

 

ILOM on database servers can use IPMI to send sensor alerts to an Enterprise Manager
Agent.

 

ILOM on a storage server uses SNMP to send sensor alerts to the cellsrv process on
the same storage server.

 

ILOM on a storage server uses IPMI to send sensor alerts to the MS process on the
same storage server.

 

ILOM on a storage server uses SNMP to send sensor alerts to the MS process on the same storage server.

 

ILOM on database servers can use SNMP to send sensor alerts to an Enterprise
Manager Agent.


ILOM on a storage server uses IPMI to send sensor alerts to the MS process on the
same storage server.


ILOM on database servers can use SNMP to send sensor alerts to an Enterprise
Manager Agent.


C: ILOM supports the Intelligent Platform Management Interface (IPMI), which enables you
to monitor and control your server platform, as well as to retrieve information about your
server platform.
ILOM supports alerts in the form of IPMI Platform Event Trap (PET) alerts. Alerts provide
advance warning of possible system failures.
E: Oracle ILOM supports the Simple Network Management Protocol (SNMP), which is used
to exchange data about network activity.
SNMP functionality requires the following two components:
References:https://docs.oracle.com/cd/E19860-01/E21452/E21452.pdf




You must replace the battery on the disk controller in three Exadata storage servers and
must power off the affected storage servers.
Which two commands must you execute to safely power off the storage servers in an X5
Database Machine?

 

‘shutdown -h now’on the affected storage servers

 

CellCLI> LIST GRIDDISK WHERE STATUS != ‘inactive’

 

CellCLI > LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome !=
‘Yes’

 

‘crsctl stop cluster –all’on one of the database servers

 

CellCLI> ALTER GRIDDISK ALL INACTIVE


CellCLI > LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome !=
‘Yes’


CellCLI> ALTER GRIDDISK ALL INACTIVE


C: Step 1:
Run the following command to check if there are other offline disks
CellCLI> LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome != 'Yes'
If any grid disks are returned, then it is not safe to take the storage server offline because
proper Oracle ASM disk group redundancy will not be intact.
E: Step 2:
Inactivate all the grid disks when Oracle Exadata Storage Server is safe to take offline
using the following command:
CellCLI> ALTER GRIDDISK ALL INACTIVE
Taking the storage server offline when one or more grid disks are in this state will cause
Oracle ASM to dismount the affected disk group, causing the databases to shut down
abruptly.


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