Oracle 1z1-084 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1z1-084
Exam Name/Title: Oracle Database 19c Performance and Tuning Management
Certification Provider: Oracle
Corresponding Certification: Oracle Database 19c

Exam Questions: 57
Updated On: Jul 11, 2026

Question #19

An Oracle 19c database uses default values for all optimizer initialization parameters.
After a table undergoes partition maintenance, a large number of wait events occur for:
cursor: pin S wait on X
Which command reduces the number of these wait events?

A. ALTER SYSTEM SET SESSION CACHED CURSORS = 500;

B. ALTER SYSTEM SET CURSOR_SHARING = FORCE;

C. ALTER SYSTEM SET CURSOR_INVALIDATION = DEFERRED;

D. ALTER SYSTEM SET CURSOR_SPACE_FOR_TIME - TRUE;

Discussion 0

Correct Answer: C Vote an answer

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Question #20

You want to reduce the amount of db file scattered read that is generated in the database. You execute the SQL Tuning Advisor against the relevant workload. Which two can be part of the expected result?

A. recommendations regarding partitioning the tables

B. recommendations regarding the creation of SQL Patches

C. recommendations regarding the creation of materialized views

D. recommendations regarding rewriting the SQL statements

E. recommendations regarding the creation of additional indexes

Discussion 0

Correct Answer: D,E Vote an answer

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Question #21

Which three statements are true about tuning dimensions and details of v$sys_time_model and DB time?

A. The proportion of WAIT TIME to CPU TIME always increases with increased system load.

B. Parse Time Elapsed accounts for successful soft and hard parse operations only.

C. When WAIT TIME is high, instance tuning may improve performance.

D. Statspack cannot account for high CPU time when CPU TIME is a Top 10 event in DB time. When CPU time is high, SQL tuning may improve performance.

E. DB Time accounts for all time used by background processes and user sessions.

F. Systems in which CPU time is dominant need more tuning that those in which WAIT TIME is dominant.

Discussion 0

Correct Answer: C,D,E Vote an answer

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Question #22

Examine this code block, which executes successfully:
DBMS_SERVER_ALERT. SET_THRESHOLD (
DBMS_SERVER_ALERT.CPU_TIME_PER_CALL, DBMS_SERVER_ALERT. OPERATOR_GE, '8000', DBMS_SERVER_ALERT.OPERATOR_GE, '10000', 1, 2, 'inst1', DBMS_SERVER_ALERT.OBJECT_TYPE_SERVICE, 'main.regress.rdbms.dev.us.example.com') ;

What will happen?

A. A warning alert will be issued when CPU time exceeds 1 minute for each user call.

B. A critical alert will be issued when CPU time exceeds 10000 microseconds for each user call.

C. A critical alert will be issued when CPU time exceeds 2 minutes for each user call.

D. A warning alert will be issued only when CPU time exceeds 10000 microseconds for each user call.

Discussion 0

Correct Answer: B Vote an answer

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Question #23

Which two statements are true about session wait information contained in v$session or v$session_wait?

A. Rows for sessions displaying WAITED UNKNOWN TIME in the STATE column indicate that the session is still waiting.

B. Rows for sessions that are not waiting might contain the actual wait time for the last event for which they waited.

C. Rows for sessions that are currently waiting have their wait time incremented every microsecond.

D. Rows for sessions that are not waiting always contain the total wait time since the session started.

E. Rows for sessions that are currently waiting have a wait time of 0.

Discussion 0

Correct Answer: B,E Vote an answer

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Question #24

Users complain about slowness and session interruptions. Additional checks reveal the following error in the application log:

Which file has additional information about this error?

A. Session trace file SQL trace file automatically generated by the error

B. ASH report

C. Alert log

D. SQL trace file automatically generated by the error

Discussion 0

Correct Answer: C Vote an answer

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