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 #33

You have two very large databases supporting OLTP workloads which run on multiple small-blade style servers in a
cluster and which require optimal latency fior I/O.
You plan to migrate them to a Database Machine once a capacity planning exercise is finished.
The database backup strategy requires that backups are written directly to media.
High availability requirements state that you must be able to survive node fiailures at any time.
Which three Database Machine components or fieatures would you recommend to support these requirements?

A. A high perfiormance expansion fiull rack

B. Use ofi write back flash cache

C. Use ofi smart flash logs

D. High capacity disks in the Database Machine

E. A high capacity expansion fiull rack

F. High perfiormance disks in the Database Machine

Discussion 0

Correct Answer: B,C,D Vote an answer

Question #34

Which fiour statements are true about Exadata Smart Flash Cache?

A. Smart Scan will never be done fior I/Os to flash based griddisks.

B. Single block reads can benefit firom Smart Flash Cache.

C. Multiblock reads can benefit firom Smart Flash Cache.

D. Flash based ASM diskgroups may share space with the Flash Cache on the flashdisks.

E. Smart Flash Logs reduce the size ofi Smart Flash Cache.

F. Smart Scan will always be done fior I/Os to flash based griddisks.

Discussion 0

Correct Answer: B,C,D,E Vote an answer

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Question #35

Last weekend, an Exadata storage server flashdisk entered the predictive fiailure state.
The flashdisk is used by the flashcache and has a griddisk which is a member ofi a normal redundancy diskgroup.
Identifiy the fiour steps you must perfiorm to replace this flashdisk.

A. Verifiy that the griddisk located on the predictive fiailure flashdisk has been successfiully dropped firom the
associated ASM diskgroup.

B. Add the griddisk back into the ASM diskgroup to which it belonged.

C. Replace the predictive fiailure flashdisk.

D. Identifiy the griddisk on the predictive fiailure flashdisk and drop it firom the associated ASM diskgroup

E. Create a new griddisk on the replaced flashdisk.

F. Safiely power off the cell containing the predictive fiailure flashdlsk.

G. Drop the flashcache on the cell and re-create it using all flashdlsks.

H. Drop the flashcache on the cell and re-create it using all but the predictive fiailure flashdisk.

I. Power up the cell containing the replaced flashdlsk and activate all grlddlsks.

Discussion 0

Correct Answer: C,D,F,I Vote an answer

Question #36

Which three statements are true about the initial storage configuration after the standard deployment ofi a new
database Machine?

A. The Data_<DBM_Name> and RECO_<DBM_Name> ASM diskgroups are built on part ofi the interleaved griddisks.

B. There is a firee space available on the hard disks inside the database servers fior possible extension ofi the /u01 file
system.

C. There is firee space available on the flashdisk inside the Exadata storage servers fior possible use as flash-based
griddisks.

D. There is no firee disk space available on the hard disk inside the database servers fior possible extensions ofi the /u01
file system.

E. The Data_<DBM_Name> and RECO_<DBM_Name> ASM diskgroups are built on top ofi the non-interleaved
griddisks.

F. There is no firee disk available on the flashdisk inside the Exadata storage servers fior possible use as flash-based
griddisks.

Discussion 0

Correct Answer: B,E,F Vote an answer

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Question #37

Yesterday, an Exadata storage server flashdisk entered the poor perfiormance state.
This flashdisk os used by flashcache and has a griddisk which is a member ofi a normal redundancy diskgroup.
Identifiy the six steps you must perfiorm to replace flashdisk.

A. Identifiy the griddisk located on the poorly perfiorming flashdisk and drop it firom the associated ASm diskgroup.

B. Add the griddisk back into the ASM diskgroup to which it belonged.

C. Recreate the flashcache on the cell using all flashdisks.

D. Replace the poorly perfiorming flashdisk.

E. Create a new griddisk on the replaced flashdisk.

F. Drop the flashcache on all cell.

G. Power up the cell containing the replaced flashdisk and activate all griddisks.

H. Safiely power off the cell containing the poorly-perfiorming flashdisk.

I. Verifiy that the griddisk located on the poorly perfiorming flashdisk has been successfiully dropped firom the
associated ASM diskgroup.

Discussion 0

Correct Answer: A,D,E,G,H Vote an answer

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Question #38

Which three are true about Exadata storage server alerts?

A. A threshold based alert gets cleared automatically when the measured value no longer violates the threshold.

B. Storage server alerts are all statefiul alerts.

C. Storage server alerts notifications may be sent using SMTP.

D. Storage server alerts notifications may be sent using SNMP.

E. Storage server alerts are all stateless alerts.

F. A storage server alert is only ever issued as a warning or at a critical situation.

Discussion 0

Correct Answer: A,D,F Vote an answer

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Question #39

You are using Hybrid Columnar Compression fior a table stored in a tablespace that is contained in an Exadata-based
ASM diskgroup. Identifiy three statements that correctly explain where the compression and decompression can be
done.

A. Decompression can be done on the Exadata storage servers.

B. Compression can be done on the Exadata storage servers.

C. Compression can be done on the database servers.

D. Decompression can be done on the database servers.

Discussion 0

Correct Answer: A,C,D Vote an answer

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Question #40

Which three must be true fior Smart Scans to be done?

A. Having a 4 meg AU size fior the ASM diskgroup containing the tablespace in which tables accessed by a query are
stored

B. Cell_offload_process = true fior the ASM diskgroup containing the tablespace in which tables accessed by a query
are stored.

C. Having direct path reads used at run time

D. Executing a query in parallel

E. cell.smart_scan_capable=true fior the ASM diskgroup containing the tablespace in which tables accessed by a query
are stored.

F. Setting _serial_direct_read=true in the session issuing the SQL statements

Discussion 0

Correct Answer: C,E,F Vote an answer

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