Oracle 1z1-485 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1z1-485
Exam Name/Title: Oracle Exadata Database Machine 2014 Implementation Essentials
Certification Provider: Oracle
Corresponding Certification: Other Oracle Certification

Exam Questions: 71
Updated On: Jul 09, 2026

Question #33

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. Tune the application to reduce I/O requests.

B. LeverageIORM to give priority to critical workloads.

C. Swap hard disks to High Capacity disks.

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

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

Discussion 0

Correct Answer: A,B,E Vote an answer

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Question #34

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 enabled by default on Oracle 11gR2, allowing full use of its features.

C. 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.

D. Oracle's Auto DOP algorithms calculate the Degree ofParallelism based on the table's block counts.

E. Auto DOP is disabled by default and must be enabled before SQL statements can take advantage of its features.

Discussion 0

Correct Answer: C,D,E Vote an answer

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Question #35

Which two statements are true about Exadata memory capabilities?

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

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

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

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.

Discussion 0

Correct Answer: D,E Vote an answer

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Question #36

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 SQL Developer migration tools

B. using incremental cross-platform RMAN restore

C. using GoldenGate

D. using cross-platform transportable tablespaces

E. using Data Guard Physical Standby

Discussion 0

Correct Answer: B,C Vote an answer

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Question #37

Which table compression technique will not work on Exadata without licensing the Oracle Advanced Compression Option?

A. COMPRESS

B. COMPRESS FOR ARCHIVE

C. COMPRESS FOR OLTP

D. COMPRESS FOR QUERY

E. COMPRESS BASIC

Discussion 0

Correct Answer: C Vote an answer

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Question #38

When should you use Hybrid Columnar Compression?

A. on large active tables where deeper compression is desired

B. on every table where Advanced Compression is not used

C. always

D. on tables or partitions that have fairly static data

Discussion 0

Correct Answer: D Vote an answer

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Question #39

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. Enable Write Back Flash Cache.

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

D. Execute alter table ... cell_flash_cache=keep on heavily scanned tables.

Discussion 0

Correct Answer: D Vote an answer

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Question #40

Identify two tasks that the Database Resource Manager can perform, which the I/O Resource Manager cannot.

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

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

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

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

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

Discussion 0

Correct Answer: D,E Vote an answer

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