A user in a session executed the following SQL statement to set the optimizer mode:ALTER SESSION SET OPTIMIZER_MODE = AL
Posted: Sun Jun 11, 2023 3:49 pm
A user in a session executed the following SQL statement to set the optimizer mode:ALTER SESSION SET OPTIMIZER_MODE = ALL_ROWSWhat impact would it have on the goal of the optimizer for that session? (Choose all that apply.)
A. Statement level OPTIMIZER_MODE hints take precedence over the session-level setting.
B. The OPTIMIZER_MODE parameter set at instance level takes precedence over the session-level value.
C. The optimizer uses a cost-based approach, regardless of the presence of statistics; it optimizes with a goal of best response time.
D. The optimizer uses a cost-based approach for all SQL statements in the session, regardless of the presence of statistics; it optimizes with a goal of best throughput.
A. Statement level OPTIMIZER_MODE hints take precedence over the session-level setting.
B. The OPTIMIZER_MODE parameter set at instance level takes precedence over the session-level value.
C. The optimizer uses a cost-based approach, regardless of the presence of statistics; it optimizes with a goal of best response time.
D. The optimizer uses a cost-based approach for all SQL statements in the session, regardless of the presence of statistics; it optimizes with a goal of best throughput.