Which two statements are true regarding the SQL Repair Advisor?（）

• A、The SQL Repair Advisor can be invoked to tune the performance of the regressed SQL statements.
• B、The SQL Repair Advisor can be invoked even when the incident is not active for a SQL statement crash.
• C、The SQL Repair Advisor is invoked by the Health Monitor when it encounters the problematic SQL statement.
• D、The DBA can invoke the SQL Repair Advisor when he or she receives an alert generated when a SQL statement crashes and an incident is created in the ADR.