Exam 1z0-053 topic 15 question 63 discussion

Actual exam question from Oracle's 1z0-053

Question #: 63
Topic #: 15

You run the SQL Tuning Advisor (STA) to tune a SQL statement that is part of a fixed SQL plan baseline. The STA generates a SQL profile for the SQL statement, which recommends that you accept the profile.
Which statement is true when you accept the suggested SQL profile?

A. The tuned plan is not added to the SQL plan baseline.
B. The tuned plan is added to the fixed SQL plan baseline as a fixed plan.
C. The tuned plan is added to the fixed SQL plan baseline as a nonfixed plan.
D. The tuned plan is added to a new nonfixed SQL plan baseline as a nonfixed plan.

Show Suggested Answer

Suggested Answer: C 🗳️
15.4 Using Fixed SQL Plan Baselines
When you tune a SQL statement with a fixed SQL plan baseline using SQL Tuning Advisor, a SQL profile recommendation has special meaning. When the SQL profile is accepted, the database adds the tuned plan to the fixed SQL plan baseline as a non-fixed plan. However, as described above, the optimizer does not use the tuned plan when a reproducible fixed plan is present. Therefore, the benefit of SQL tuning may not be realized. To enable the use of the tuned plan, manually alter the tuned plan to a fixed plan by setting its FIXED attribute to YES.

by thuthuysphn58 at April 4, 2025, 8:21 a.m.

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