Oracle 1Z0-027 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1Z0-027
Exam Name/Title: Oracle Exadata X3 and X4 Administration
Certification Provider: Oracle
Corresponding Certification: Oracle Database

Exam Questions: 72
Updated On: Jul 09, 2026

Question #17

Which statement is true about operating systems on database Machine multi-rack configuration consisting ofi two fiull
racks and one Exadata storage rack?

A. All Exadata storage servers in the same cluster must run the same O/S but Exadata Storage Servers in different
clusters may run a different O/S.

B. All Exadata storage servers must run the Oracle Linux O/S and all database servers within the same cluster must run
the same O/s.

C. All Exadata Storage Servers must run the Oracle Solaris O/S and all database servers within the same cluster must
run the same O/S.

D. All Exadata storage servers and all database servers must run the Oracle Linux O/S and X3-8 database server may
run the Oracle Solaris O/S.

E. All Exadata storage servers must run the Oracle Linux O/S and all database servers within the same cluster must run
the Oracle Linux O/s.

Discussion 0

Correct Answer: B Vote an answer

Question #18

Identifiy two valid reasons fior creating multiple griddisks on a Single celldisk.

A. To fiacilitate normal or high redundancy ASM diskgroups

B. To segregate storage into multiple pools with different perfiormance characteristics

C. To segregate storage into multiple pools that can be assigned to different databases

D. To enable disk mirroring fior the system area

E. To segregate storage into multiple pools that can be assigned to different resource consumer groups in the same
database.

Discussion 0

Correct Answer: B,C Vote an answer

Question #19

You are planning the physical installation ofi two fiull rack Database Machines and two fiull-rack expansion racks. The
fiour racks will be combined into one multi rack system.
Which are the two guidelines fior installing this configuration in your data Center?

A. All racks must be placed side by side with no space between them.

B. All Expansion Racks must be placed side by side with no space between them.

C. Expansion Racks must be placed side by side at least one meter apart.

D. All Database Machines must be placed side by side with no space between them.

E. All racks must be placed in such a way that the exhaust air ofi one rack does not enter the air inlet ofi another

F. Racks may be placed as required in the machine room.

G. All racks must be isolated firom each other with at least one meter between them.

Discussion 0

Correct Answer: D,E Vote an answer

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Question #20

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 fiast response times, which
satisfies stringent requirements, and most ofi 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?

A. Drop non-constraint indexes ifi Smart Scan perfiorms better than index range scans on the corresponding table.

B. Drop non-constraint Indexes ifi Smart Scan perfiorms better than any index scans on the corresponding table.

C. Drop non-constraint indexes ifi Smart Scan perfiorms better than index unique scans on the corresponding table.

D. Drop non-constraint indexes ifi Smart Scan occurs instead ofi an index access path on the corresponding table.

Discussion 0

Correct Answer: B Vote an answer

Question #21

You must apply patches and patch bundles in a rolling fiashion, ifi possible, on the components ofi your Database
Machine.
You use RAC fior 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 fiollowing:
$ORACLE_HOME/oplan/oplangenerateApplySteps /u01/stage
Which two are true concerning oplan?

A. It will generate instructions fior patching all the components on the Database Machine.

B. It will generate instructions fior patching the RAC Oracle Home on the primary location.

C. It will generate instructions fior patching only storage servers.

D. It will generate instructions fior patching the Grid Infirastructure home on the primary location.

E. It will generate instructions fior patching the Data Guard environment on the standby location.

Discussion 0

Correct Answer: B,D Vote an answer

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Question #22

You are checking the status ofi the ports on the one ofi the InfiniBand switches in your Database Machine.
You have run the getportstatus as shown:

You have 36 ports to check.
Which two methods would you use to check the status ofi all 36 ports?

A. Use Database Control.

B. Use Enterprise Manager.

C. Use the ibqueryerros.pl script logged into the InfiniBand switch as root.

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

Discussion 0

Correct Answer: B,C Vote an answer

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Question #23

Which two statements are true about the IPTables firewall configuration on a Database Machine- Machine after the
defiault Initial deployment?

A. IPTables is configured with Oracle supplied rules on the cells.

B. IPTables is installed and available but not configured on the cells.

C. IPTables is configured with Oracle supplied rules on the database servers.

D. IPTables is installed and available but not configured on any servers.

E. IPTables is installed and available but not configured on the database servers.

Discussion 0

Correct Answer: A,E Vote an answer

Question #24

Which two are regarding the case ofi storage indexes?

A. Storage indexes are retained after a cell is rebooted.

B. Avoid the use ofi bind variables because Storage Indexes do not work with bind variables.

C. The cell physical 10 bytes saved by storage index statistic returns multiple rows, one fior each storage server.

D. To maximize the benefit ofi storage Indexes, load your data stored on the filtered columns.

E. To increase the chance ofi using the a storage index, you can make table indexes invisible.

Discussion 0

Correct Answer: D,E Vote an answer

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