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? （）Ato minimize plan regression due to the use of a new optimizer versionBto completely avoid the use of new plans generated by a new optimizer versionCto prevent plan capturing when the SQL statement is executed after the database upgradeDto keep the plan in the plan history so that it can be used when the older version of the optimizer is used
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 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
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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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单选题You installed Oracle Database 11g and are performing a manual upgrade of the Oracle9i database. As a part of the upgrade process, you execute the following script: SQL@utlu111i.sql Which statement about the execution of this script is true?（）AIt must be executed from the Oracle Database 11g environment.BIt must be executed only after the SYSAUX tablespace has been created.CIt must be executed from the environment of the database that is being upgraded.DIt must be executed only after AUTOEXTEND is set to ON for all existing tablespaces.EIt must be executed from both the Oracle Database 11g and Oracle Database 9i environments.
单选题Your organization decided to upgrade the existing Oracle 10g database to Oracle 11g database in a multiprocessor environment. At the end of the upgrade, you observe that the DBA executes the following script: SQL @utlrp.sql What is the significance of executing this script?（）AIt performs parallel recompilation of only the stored PL/SQL code.BIt performs sequential recompilation of only the stored PL/SQL code.CIt performs parallel recompilation of any stored PL/SQL as well as Java code.DIt performs sequential recompilation of any stored PL/SQL as well as Java code.
多选题Identify three scenarios in which you would recommend the use of SQL Performance Analyzer to analyzeimpact on the performance of SQL statements.（）AChange in the Oracle Database versionBChange in your network infrastructureCChange in the hardware configuration of the database serverDMigration of database storage from non-ASM to ASM storageEDatabase and operating system upgrade
单选题Your database supports a DSS workload that involves the execution of complex queries: Currently, the library cache contains the ideal workload for analysis. You want to analyze some of the queries for an application that are cached in the library cache. What must you do to receive recommendations about the efficient use of indexes and materialized views to improve query performance?（）ACreate a SQL Tuning Set (STS) that contains the queries cached in the library cache and run the SQL Tuning Advisor (STA) on the workload captured in the STS.BRun the Automatic Workload Repository Monitor (ADDM).CCreate an STS that contains the queries cached in the library cache and run the SQL Performance Analyzer (SPA) on the workload captured in the STS.DCreate an STS that contains the queries cached in the library cache and run the SQL Access Advisor on the workload captured in the STS.
多选题Which of the following cannot be used as input to the SQL Tuning Advisor？（）AA single SQL statement provided by a userBAn existing SQL Tuning Set （STS）CA preprocessed Database Replay workloadDA schema nameESQL statement identified in EM as using excessive resources
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.
多选题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？（）AEvery SQL statement in the STS is considered only once for execution.BThe SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics.CThe execution plan and execution statistics are computed for each SQL statement in the STS.DThe effects of DDL and DML are considered to produce the execution plan and execution statistics.