Online Access Free Oracle.1z0-070.v2021-09-23.q103 Practice Test (Page 11)

1z0-070 Exam Question 46

You are evaluating the performance of a SQL statement that accesses a very large table.
You run this query:

Identify two reasons why the "cell physical IO interconnect bytes" statistic is greater than the "cell physical IO interconnect bytes returned by smart scan" statistic.

A.There is a transaction, which committed after the query began, that has modified some of the table blocks, causing some "cell single block physical reads"to be requested by the database instance, resulting in additional I/O.

B.There are chained rowsin the table, causing some "cell single block physical reads"to be requested by the database instance, resulting in additional I/O.

C.The table is a hash clustered table, causing "cell multiblock physical reads"to be requested by the database instance, resulting in additional I/O.

D.The table is list partitioned, causing "cell list of blocks physical reads"to be requested by the database instance, resulting in additional I/O.

E.There is a local index ona list partitioned tableon the column used in the WHEREclause, causing "cell list of blocks physical reads"to be requested by the database instance, resulting in additional I/O.

1z0-070 Exam Question 47

You are evaluating the performance of a SQL statement that accesses a very large table.
You run this query:

Identify two reasons why the "physical read total bytes" statistic is greater than the "cell physical IO bytes eligible for predicate offload" statistic.

A.There is an index on the column used in the WHERE clause, causing "cell multiblock physical reads" to be requested by the database instance, resulting in additional I/O.

B.The table is an IOT and has an overflow segment, causing "cell multiblock physical reads" to be requested by the database instance, resulting in additional I/O.

C.There is an uncommitted transaction that has modified some of the table blocks, causing some "cell single block physical reads" to be requested by the database instance, resulting in additional I/O.

D.The table is an index clustered table, causing "cell single block physical reads" to be requested by the database instance, resulting in additional I/O.

E.There are migrated rows in the table, causing some "cell single block physical reads" to be requested by the database instance, resulting in additional I/O.

1z0-070 Exam Question 48

Batch and DSS workloads on your Exadata X6 Database Machine are causing performance problems for OLTP workloads at certain times of the day.
There are five RAC databases performing OLTP I/O. Two of them also perform batch I/O.
There is another RAC database that performs only DSS I/O.
You are asked to resolve this problem so that the OLTP workload will not suffer when competing with the batch or DSS workloads.
You decide to use the I/O resource manager.
Which is the best way to solve this problem?

A.Create a category plan with EXADCLI calling EXACLI to give the OLTP category the highest priority on all the cells, and use the Database Resource Manager to create the OLTP category and map all OLTP- oriented consumer groups in all databases to it.

B.Use the Database Resource Manager to give the OLTP category the highest priority and use EXADCLI calling EXACLI to create the OLTP category on all the cells.

C.Create a category plan with EXADCLI calling EXACLI to give the OLTP category the highest priority on all the cells, and use the Database Resource Manager to give the OLTP consumer group the highest priority on all databases.

D.Create a database plan using EXADCLI calling EXACLI to give OLTP I/O the highest priority from all six databases.

1z0-070 Exam Question 49

You are checking the status of the ports on one of the InfiniBand switches on your X5 Database Machine.
You run the getportstatus command as shown:
[root@exampsw-ib2 bin]# getportstatus 17b
Port status for connector 17B Switch Port 2
Adminstate:......................Enabled
LinkWidthEnabled: ...............1X or 4X
LinkWidthSupported:..............1X or 4X
LinkWidthActive..................4X
LinkSpeedSupported: .............2.5 Gbps or 5.0 Gbps or 10.0 Gbps
LinkState: ......................Active
PhysLinkState: ................LinkUp
LinkSpeedActive: ..............10.0 Gbps
LinkSpeedEnabled: .............2.5 Gbps or 5.0 Gbps or 10.0 Gbps
You have 36 ports to check.
Which two methods would you use to check the status of all 36 ports?

A.Use the ibqueryerrors.pl script after logging in to the InfiniBand switch as root.

B.Use Enterprise Manager.Cloud Control.

C.Use Enterprise Manager Express.

D.Create user-defined metrics for the InfiniBand switch.

1z0-070 Exam Question 50

Which three statements are true about bulk data loading capabilities in an X5 Database Machine environment?

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

B.DBFS may be used if Exadata-based shared storage is required to stage data before bulk loading into a database.

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

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

E.ACFS may be used if Exadata-based shared storage is required to stage data before bulk loading into a database.

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

G.ACFS may use the DBFS_DG diskgroup to contain the ADVM volume file.

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