1Z0-064 Questions and Answers

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Oracle Database 12c: Performance Management and Tuning: 1Z0-064

Rating: 4.5

Vendor: Oracle

Certifications: Oracle Database

Exam Name: Oracle Database 12c: Performance Management and Tuning

Exam Code: 1Z0-064

Total Questions: 119 Q&As

Last Updated: Nov 18, 2022

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Same Questions from the Latest Real Exam

1Z0-064 Online Practice Questions and Answers

Questions 1

Examine the query and its output:

Which two inferences can be definitely derived from this output? (Choose two.)

A. The db file scattered read event has occurred 104 times in this session for file# 12.

B. The session has completed performing a full table scan.

C. The SQL statements in this session are performing excessive disk reads.

D. The multiblock factor is 8 for this I/O but it could vary for the other I/O events.

Show Answer
Questions 2

Which three statements are true about using Real-Time Database Operations? (Choose three.)

A. The STATISTICS_LEVEL initialization parameter must be set to ALL to enable automatic SQL monitoring for all long-running queries.

B. The CONTROL_MANAGEMENT_PACK_ACCESS initialization parameter must be set to DIAGNOSTIC+TUNUNG to use Real-Time Database Operations.

C. The STATISTICS_LEVEL initialization parameter can be set to TYPICAL or ALL to enable Real-Time Database Operations.

D. Real-Time Database Operations can be enabled only at the system level.

E. Real-Time Database Operations can be created by using the DBMS_MONITOR or DBMS_SESSION packages.

F. Database operation monitoring starts automatically when a database operation consumes at least five seconds of the CPU or I/O time in a single execution.

Show Answer
Questions 3

You are administrating a database that supports a DSS workload. Syntactically similar queries using joins and aggregate functions are frequently executed by users to fetch data from remote databases by using database links.

Which three tasks should you perform to improve the performance of these queries?

A. Ensure that the RESULT_CACHE_MAX_RESULT parameter is set to 100.

B. Ensure that the RESULT_CACHE_REMOTE_EXPIRATION parameter is set to a nonzero value for the local instance.

C. Ensure that the RESULT_CACHE_MAX_SIZE parameter is set to a nonzero value on the local database instance.

D. Ensure that the RESULT_CACHE_MAX_SIZE parameter is set to a nonzero value on both the local and remote database instances.

E. Ensure that the RESULT_CACHE_MAX_SIZE parameter is set to a nonzero value on the remote database instance.

F. Ensure that the RESULT_CACHE_MAX_MODE parameter is set to FORCE for the local instance.

G. Ensure that the RESULT_CACHE_MODE parameter is set to FORCE for remote database instances.

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