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.
Explanation:
15.4 Using Fixed SQL Plan Baselines (Refer to here)
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.