Oracle认证考试

Which statement describes the effect of the execution of the above PL/SQL block?（）A、The plan baselines are verified with the SQL profiles.B、All fixed plan baselines are converted into nonfixed plan baselines.C、All the nonaccepted SQL profiles are accepted

题目

Which statement describes the effect of the execution of the above PL/SQL block?（）

  • A、The plan baselines are verified with the SQL profiles.
  • B、All fixed plan baselines are converted into nonfixed plan baselines.
  • C、All the nonaccepted SQL profiles are accepted into the plan baseline.
  • D、The nonaccepted plans in the SQL Management Base are verified with the existing plan baselines.
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相似问题和答案

第1题：

Which statement is true about the plan being loaded into the SQL baseline by the above command?()

A. It is loaded with the FIXED status.

B. It is loaded with the ACCEPTED status.

C. It is not loaded with the ENABLED status.

D.It is not loaded with the ACCEPTED status.


参考答案：B

第2题：

Which statement describes the effect of the execution of the above PL／SQL block?()

A. The plan baselines are verified with the SQL profiles.

B. All fixed plan baselines are converted into nonfixed plan baselines.

C. All the nonaccepted SQL profiles are accepted into the plan baseline.

D. The nonaccepted plans in the SQL Management Base are verified with the existing plan baselines.


参考答案：D

第3题：

Identify the activities performed as part of the Automatic SQL Tuning process in the maintenance window?()

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


参考答案：A, B, C, E

第4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？（）

  • A、 It is loaded with the FIXED status.
  • B、 It is loaded with the ACCEPTED status.
  • C、 It is not loaded with the ENABLED status.
  • D、 It is not loaded with the ACCEPTED status.

正确答案:B

第5题：

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.

正确答案:C

第6题：

You want to analyze a SQL Tuning Set (STS) using SQL Performance Analyzer in a test database. Which two statements are true regarding the activities performed during the test execution of SQLs in a SQL Tuning Set?（）

A.Every SQL statement in the STS is considered only once for execution

B.The SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics

C.The execution plan and execution statistics are computed for each SQL statement in the STS

D.The effects of DDL and DML are considered to produce the execution plan and execution statistics


参考答案：A, C

第7题：

While deploying a new application module, the software vendor ships the application software along with appropriate SQL plan baselines for the new SQLs being introduced. Which two statements describe the consequences?（）

  • A、The plan baselines can be evolved over time to produce better performance.
  • B、The newly generated plans are directly placed into the SQL plan baseline without being verified.
  • C、The new SQL statements initially run with the plans that are known to produce good performance under standard test configuration.
  • D、The optimizer does not generate new plans for the SQL statements for which the SQL plan baseline has been imported.

正确答案:A,C

第8题：

Which two statements about the SQL Management Base (SMB) are true?()

A. It contains only SQL profiles generated by SQL Tuning Advisor.

B. It stores plans generated by the optimizer using a stored outline.

C. It is part of the data dictionary and stored in the SYSAUX tablespace.

D. It is part of the data dictionary and stored in the SYSTEM tablespace.

E. It contains the statement log, the plan history, plan baselines, and SQL profiles.


参考答案：C, E

第9题：

Which two statements about the SQL Management Base (SMB) are true? （）(Choose two.)

  • A、It contains only SQL profiles generated by SQL Tuning Advisor.
  • B、It stores plans generated by the optimizer using a stored outline.
  • C、It is part of the data dictionary and stored in the SYSAUX tablespace.
  • D、It is part of the data dictionary and stored in the SYSTEM tablespace.
  • E、It contains the statement log, the plan history, plan baselines, and SQL profiles.

正确答案:C,E

第10题：

Which three are the valid statements in relation to SQL plan baselines？（）

  • A、 The plans can be manually loaded to the SQL plan baseline.
  • B、 The plans in the SQL plan baseline are verified and accepted plans.
  • C、 The plans generated for every SQL statement are stored in the SQL plan baseline by default. 
  • D、 The plan baselines are stored temporarily in the memory as long as the database instance is running.
  • E、 For the SQL plan baselines to be accessible to the optimizer， the SYSAUX tablespace must be online.

正确答案:A,B,E

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