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Home > Oracle > Oracle Certifications > 1Z0-117
Oracle 1Z0-117  Exam Questions & Answers
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Oracle 1Z0-117 Exam Questions & Answers


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  • Vendor: Oracle

    Exam Code: 1Z0-117

    Exam Name: Oracle Database 11g Release 2: SQL Tuning Exam

    Certification Provider: Oracle

    Total Questions: 125 Q&A

    Updated on: May 26, 2026

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1Z0-117 Online Practice Questions and Answers

Questions 1

Examine the parallelism parameter for your instance:

parallel_servers_target

Now examine the resource plan containing parallel statement directives:

Consumer Group resource plan containing parallel statement directives:

Which two are true about parallel statement queuing when this plan is active?

A. Urgent_group sessions collectively can consume up to 64 parallel execution servers before queuing starts for this consumer group.

B. ETL_GROUP sessions can collectively consume up to 64 parallel execution servers before the queuing starts for this consumer.

C. A single OTHER_GROUPS session will execute serially once it is queued for six minutes.

D. A single ETL_GROUP session can consume up to eight parallel execution servers.

E. A single ETL_GROUP session can consume up to 32 parallel execution servers.

F. A single OTHER_GROUPS session will execute in parallel once it is queued for six minutes.

Show Answer

Correct Answer: AD

(http://docs.oracle.com/cd/E11882_01/server.112/e25494/dbrm.htm#ADMIN13466)

Questions 2

You enable auto degree of parallelism (DOP) for your database instance.

Examine the following query:

Which two are true about the execution of statement?

A. Dictionary DOP for the objects accessed by the query is used to determine the statement DOP.

B. Auto DOP is used to determine the statement DOP only if the estimated serial execution time exceeds PARALLEL_MIN_TIME_THRESHOLD.

C. Dictionary DOP is used to determine the statement DOP only if the estimated serial execution time exceeds PARALLEL_MIN_TIME_THRESHOLD.

D. The statement will be queued if insufficient parallel execution slaves are available to satisfy the statements DOP.

E. The statement will be queued if the number of busy parallel execution servers exceeds PARALLEL_SERVERS_TARGET.

F. The statements may execute serially.

Show Answer

Correct Answer: AF

*

Parallel (Manual): The optimizer is forced to use the parallel settings of the objects in the state- ment.

*

MANUAL - This is the default. Disables Auto DOP (not B), statement queuing (not D, Not E) and in-memory parallel execution. It reverts the behavior of parallel

execution to what it was pre- vious to Oracle Database 11g, Release 2 (11.2).

*

PARELLEL (MANUAL)

You can use the PARALLEL hint to force parallelism. It takes an optional parameter: the DOP at which the statement should run.

The following example forces the statement to use Oracle Database 11g Release 1 (11.1) behav- ior:

SELECT /*+ parallel(manual) */ ename, dname FROM emp e, dept d WHERE e.deptno=d.deptno;

*

PARALLEL_SERVERS_TARGET specifies the number of parallel server processes allowed to run parallel statements before statement queuing will be used. When the parameter PARAL- LEL_DEGREE_POLICY is set to AUTO, Oracle will queue SQL statements that require paral- lel execution, if the necessary parallel server processes are not available. Statement queuing will begin once the number of parallel server processes active on the system is equal to or greater than PARALLEL_SERVER_TARGET.

By default, PARALLEL_SERVER_TARGET is set lower than the maximum number of parallel server processes allowed on the system (PARALLEL_MAX_SERVERS) to ensure each parallel statement will get all of the parallel server resources required and to prevent overloading the sys- tem with parallel server processes.

Note that all serial (non-parallel) statements will execute immediately even if statement queuing has been activated.

Questions 3

See the table below:

All execution servers are currently available and the sessions use defaults for all parallel settings.

In which two cases will statements execute in parallel?

A. When parallel hints are used but only if estimated serial execution takes more than 10 seconds.

B. When parallelism is defined at the statement level.

C. When the degree of parallelism is explicitly defined in the data dictionary for tables and indexes accessed by a query.

D. Parallel DDL statements but only if estimated serial DDL execution time is greater than 10 seconds.

E. When the degree of parallelism is explicitly defined for tables and indexes but only if estimated serial execution takes more than 10 seconds.

Show Answer More Questions

Correct Answer: BC

Incorrect:

A, D, E: When PARALLEL_MIN_TIME_THRESHOLD is set to AUTO the PARALLEL_MIN_TIME_THRESHOLD is set to 30, not to 10. See note below.

Note:

* parallel_min_time_threshold

PARALLEL_MIN_TIME_THRESHOLD specifies the minimum execution time a statement should have before the statement is considered for automatic degree of parallelism. By default, this is set to 30 seconds. Automatic degree of parallelism is only enabled if PARALLEL_DEGREE_POLICY is set to AUTO or LIMITED.

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