1Z0-117 Exam Questions & Answers

Exam Code: 1Z0-117

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

Updated: Jul 10, 2024

Q&As: 125

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Practice These Free Questions and Answers to Pass the Oracle Database Exam

Questions 1

An application accessing your database got the following error in response to SQL query:

ORA-12827: insufficient parallel query slaves available

View the parallel parameters for your instance:

No hints are used and the session use default parallel settings.

What four changes could you make to help avoid the error and ensure that the query executes in parallel?

A. Set PARELLEL_DEGREE_POLICY to AUTO.

B. Increase the value of PARELLEL_MAX_SERVERS.

C. Increase PARELLEL_SERVERS_TARGET.

D. Decrease PARELLEL_MIN_PERCENT.

E. Increase PARELLEL_MIN_SERVERS.

F. Decrease PARELLEL_MIN_TIME_THRESHOLD.

G. Increase PARELLEL__MIN_TIME_THRESHOLD.

Show Answer
Questions 2

Examine the exhibit to view the query and its execution plan?

What two statements are true?

A. The HASH GROUP BY operation is the consumer of the HASH operation.

B. The HASH operation is the consumer of the HASH GROUP BY operation.

C. The HASH GROUP BY operation is the consumer of the TABLE ACCESS FULL operation for the CUSTOMER table.

D. The HASH GROUP BY operation is consumer of the TABLE ACCESS FULL operation for the SALES table.

E. The SALES table scan is a producer for the HASH JOIN operation.

Show Answer
Questions 3

Which two are the fastest methods for fetching a single row from a table based on an equality predicate?

A. Fast full index scan on an index created for a column with unique key

B. Index unique scan on an created for a column with unique key

C. Row fetch from a single table hash cluster

D. Index range scan on an index created from a column with primary key

E. Row fetch from a table using rowid

Show Answer
Questions 4

View the code sequence:

Which three statements are true about the execution of this query?

A. The optimizer uses an index join as an access path.

B. The optimizer uses a B* tree access path for the EMPLOYEES table.

C. The optimizer uses a bitmap access path for the EMPLOYEES table.

D. The optimizer performs bitmap conversion from row IDs.

E. The optimizer performs bitmap conversion to row IDs of the combined maps.

F. The optimizer performs bitmap conversion from the row IDs of the combined maps.

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Questions 5

Which three factors does the estimator depend on for overall cost estimation of a given execution plan?

A. Cardinality

B. Sort area size

C. OPTIMIZER_FEATURE_ENABLE parameter

D. NOT NULL_FEATURE_ENABLE parameter

E. NOT NULL constraint on a unique key column

F. Library cache size

G. The units of work such as disk input/output, CPU usage, and memory used in an operation

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