Cursor cache
Stored outline
SQL Tuning Set
Automatic Workload Repository (AWR) snapshots
第1题:
A. It detects changes in SQL execution plans.
B. It produces results that can be used to create the SQL plan baseline.
C. The importance of SQL statements is based on the size of the objects accessed.
D. It generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.
E. It shows only the overall impact on workload and not the net SQL impact on workload.
第2题:
When executing a SQL workload, you choose to generate execution plans only, without collecting execution statistics. Which two statements describe the implications of this? ()(Choose two.)
第3题:
You perform the following activities during the database upgrade from Oracle Database 10g to Oracle Database 11g:1. Capture plans for a SQL workload into a SQL Tuning Set (STS) before upgrade.2. Load these plans from the STS into the SQL plan baseline immediately after the upgrade.What is the reason for performing these activities? ()
A. to minimize plan regression due to the use of a new optimizer version
B. to completely avoid the use of new plans generated by a new optimizer version
C. to prevent plan capturing when the SQL statement is executed after the database upgrade
D. to keep the plan in the plan history so that it can be used when the older version of the optimizer is used
第4题:
Your system has been upgraded from Oracle Database 10g to Oracle Database 11g. You imported SQL Tuning Sets (STS) from the previous version. After changing the OPTIMIZER_FEATURE_ENABLE parameter to 10.2.0.4 and running the SQL Performance Analyzer, you observed performance regression for a few SQL statements. What would you do with these SQL statements?()
第5题:
Which two statements are true about the Automatic Workload Repository (AWR)()
第6题:
A. Cursor cache
B. Stored outline
C. SQL Tuning Set
D. Automatic Workload Repository (AWR) snapshots
第7题:
You plan to collect the Automatic Workload Repository (AWR) data every Monday morning for a month. You want Oracle Database to automatically create a baseline every Monday and remove the old baseline. What is the correct action to achieve this?()
第8题:
A. generating the SQL profile
B. testing and accepting the SQL profile
C. generating a list of candidate SQLs for tuning
D. adding tuned SQL plans into the SQL plan baseline
E. tuning each SQL statement in the order of importance
F. generating baselines that include candidate SQLs for tuning
第9题:
You work with a newly created database. Presently, there is no application load on the database instance.You want to create a baseline for tuning the application, so you decide to collect recommendations that can be implemented to improve application performance.What action must you take to achieve this?()
第10题:
Examine the following PL/SQL block: DECLARE my_plans pls_integer; BEGIN my_plans := DBMS_SPM.LOAD_PLANS_FROM_CURSOR_CACHE (sql_id=> ?9twu5t2dn5xd?; END; Which statement is true about the plan being loaded into the SQL plan baseline by the above command?()