Which of the following cannot be used as input to the SQL Tuning Advisor?() (Choose all that apply.) A. A single SQL statement provided by a userB. An existing SQL Tuning Set (STS)C. A preprocessed Database Replay workloadD. A schema nameE. SQL statement identified in EM as using excessive resources
Which of the following cannot be used as input to the SQL Tuning Advisor?() (Choose all that apply.)
A. A single SQL statement provided by a user
B. An existing SQL Tuning Set (STS)
C. A preprocessed Database Replay workload
D. A schema name
E. SQL statement identified in EM as using excessive resources
相关考题:
You’re going to have a quiz ( )by another two in the ( )month. A. followed,followedB. followed,followingC. following,followedD. following,following
Examine the commands executed to monitor database operations:$ conn sys oracle/oracle@prod as sysdbaSQL VAR eid NUMBERSQL EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION (‘batch_job’ , FORCED_TRACKING = ‘Y’);Which two statements are true?()A. Database operations will be monitored only when they consume a significant amount of resource.B. Database operations for all sessions will be monitored.C. Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + tuning.D. Only DML and DDL statements will be monitored for the session.E. All subsequent statements in the session will be treated as one database operation and will be monitored.
Evaluatethefollowingcode:SQLVARIABLEtask_nameVARCHAR2(255);SQLVARIABLEsql_stmtVARCHAR2(4000);SQLBEGIN:sql_stmt:=’SELECTCOUNT(*)FROMcustomersWHEREcust_state_province=’’CA’’’;:task_name:=’MY_QUICKTUNE_TASK’;DBMS_ADVISOR.QUICK_TUNE(DBMS_ADVISOR.SQLACCESS_ADVISOR,:task_name,:sql_stmt);END;Whatistheoutcomeofthisblockofcode?()A.Itcreatesataskandworkload,andexecutesthetask.B.Itcreatesataskandworkloadbutdoesnotexecutethetask.C.Itproducesanerrorbecauseatemplatehasnotbeencreated.D.ItproducesanerrorbecausetheSQLTuningSethasnotbeencreated.
A new report process containing a complex query is written, with high impact on the database. You wantto collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests.For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and theCONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING.What should you do to accomplish this task?()A. Execute the query and view Active Session History (ASH) for information about the query.B. Enable SQL trace for the query.C. Create a database operation, execute the query, and use the DBMS_SQL_MONITOR. REPORT_SQL_MONITOR function to view the report.D. Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.
在SQL的嵌套查询中,如何区分谓词ANY和ALL,请用实例进行说明。