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单选题
What would indicate intra-partition parallelism in an Optimizer Plan?()
A
BTQ
B
LTQ
C
IP
D
DTQ
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Your best option would be to include Transport Protection Rules in your plan.B
Your best option would be to include a custom Send connector in you plan.C
Your best option would be to include custom MailTips in you plan.D
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one server having at least two processors B
two servers having one processor and one logical database partition C
one server having four processors and two logical database partitions D
two servers each having four processors and two logical database partitions
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单选题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?()A
Set OPTIMIZER_USE_PLAN_BASELINES to FALSE to prevent the use of regressed plans.B
Capture the plans from the previous version using STS and then load them into the stored outline.C
Capture the plans from the previous version using STS and then load them into SQL Management Base (SMB).D
Set OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES to FALSE to prevent the plans from being loaded to the SQL plan baseline.
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单选题Examine the parameter for your database instance: You generated the execution plan for the following query in the plan table and noticed that the nested loop join was done. After actual execution of the query, you notice that the hash join was done in the execution plan: Identify the reason why the optimizer chose different execution plans.()A
The optimizer used a dynamic plan for the query.B
The optimizer chose different plans because automatic dynamic sampling was enabled.C
The optimizer used re-optimization cardinality feedback for the query.D
The optimizer chose different plan because extended statistics were created for the columns used.
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单选题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 versionB
to completely avoid the use of new plans generated by a new optimizer versionC
to prevent plan capturing when the SQL statement is executed after the database upgradeD
to keep the plan in the plan history so that it can be used when the older version of the optimizer is used
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多选题You have created a resource plan, PROD_DB_PLAN, with the following consumer groups with the respective plan directives: Consumer group SALES with CPU_P1 as 60 and DEGREE_OF_PARALLELISM as 4. Consumer group MARKET with CPU_P1 as 20. Consumer group DEV with CPU_P1 as 20. Consumer group OTHERS with CPU_P1 as 0 and CPU_P2 as 100. Which two statements are correct in this scenario? ()AThe maximum degree of parallelism for the members of the consumer groups is 4.BThe CPU allocation will always be equal for the consumer groups MARKET and DEV.CThe OTHERS consumer group would get 100% of the CPU if there are unused level 1 CPU resources.DThe SALES and MARKET consumer groups would get 100% of the CPU if there are unused level 2 CPU resources.EThe maximum degree of parallelism for the members of the consumer group SALES is 4 with no restriction for the remaining groups.
考题
单选题What would indicate intra-partition parallelism in an Optimizer Plan?()A
BTQ B
LTQ C
IP D
DTQ
考题
单选题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?()A
Set OPTIMIZER_USE_PLAN_BASELINES to FALSE to prevent the use of regressed plans.B
Capture the plans from the previous version using STS and then load them into the stored outline.C
Capture the plans from the previous version using STS and then load them into SQL Management Base (SMB)D
Set OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES to FALSE to prevent the plans from being loaded to the SQL plan baseline.
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