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单选题
You are maintaining the PROD database of NetFx Corporation. You set the value of the SQL_TRACE parameter to TRUE. What will be the impact of this setting？（）
A
The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the USER_DUMP_DEST directory.
B
The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the USER_DUMP_DEST directory.
C
The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the BACKGROUND_DUMP_DEST directory.
D
The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the BACKGROUND_DUMP_DEST directory.
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更多 “单选题You are maintaining the PROD database of NetFx Corporation. You set the value of the SQL_TRACE parameter to TRUE. What will be the impact of this setting？（）A The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the USER_DUMP_DEST directory.B The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the USER_DUMP_DEST directory.C The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the BACKGROUND_DUMP_DEST directory.D The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the BACKGROUND_DUMP_DEST directory.” 相关考题
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You are connected to a pluggable database (PDB) as a common user with DBA privileges.The STATISTICS_LEVEL parameter is PDB_MODIFIABLE. You execute the following:SQL ALTER SYSTEM SET STATISTICS_LEVEL = ALL SID = ‘*’ SCOPE = SPFILE;Which is true about the result of this command?（）A. The STATISTICS_LEVEL parameter is set to all whenever this PDB is re-opened.B. The STATISTICS_LEVEL parameter is set to ALL whenever any PDB is reopened.C. The STATISTICS_LEVEL parameter is set to all whenever the multitenant container database (CDB) is restarted.D. Nothing happens; because there is no SPFILE for each PDB, the statement is ignored.
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You are maintaining an OLTP database in Oracle10g. You set the value of the LOG_ARCHIVE_TRACE parameter to zero. What is the impact of this setting？ （） A、 The trace files will be disabled only for a specific session.B、 Tracing will be disabled for a client identifier.C、 Tracing will be disabled only for the ARCn process.D、 The SQL Trace facility will be disabled for the instance.
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You have specified the warning and critical threshold values of an application tablespace to be 60% and 70% respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（）A、 The EVENT parameter was not setB、 The SQL_TRACE parameter is set to FALSEC、 The Enterprise Manager Grid Control is not usedD、 The STATISTICS_LEVEL parameter is set to BASICE、 The TIMED_STATISTICS parameter is set to FALSE
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You are maintaining the SALES database for eSoft Corporation. You have not configured ASMM on the database. You want to know what size of the SGA will provide the best performance. Which advisor would you use to determine the suitable size of the SGA？（）A、 SQL Tuning AdvisorB、 Undo AdvisorC、 ADDMD、 Memory Advisor
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You are maintaining the PROD database of NetFx Corporation. You set the value of the SQL_TRACE parameter to TRUE. What will be the impact of this setting？（） A、 The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the USER_DUMP_DEST directory.B、 The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the USER_DUMP_DEST directory.C、 The SQL trace facility will generate the performance statistics for all the SQL statements for an instance and write them in the BACKGROUND_DUMP_DEST directory.D、 The SQL trace facility will generate the performance statistics for all the SQL statements for a session and write them in the BACKGROUND_DUMP_DEST directory.
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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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You have specified the warning and critical threshold values of an application tablespace to be 60% and 70%， respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（）A、The EVENT parameter was not set.B、The SQL_TRACE parameter is set to FALSEC、The Enterprise Manager Grid Control is not used.D、The STATISTICS_LEVEL parameter is set to BASICE、The TIMED_STATISTICS parameter is set to FALSE
考题
You are maintaining an OLTP database in Oracle10g. You find that the database is generating a large number of trace files. You decide to disable the trace files generated by the ARCn background process. Which action will enable you to disable the trace files generated by the ARCn background process？（） A、 Remove the LOG_ARCHIVE_DEST parameter from the init.ora file.B、 Set the value of the SQL_TRACE parameter to FALSE in the init.ora file.C、 Use the DBMS_MONITOR.SESSION_TRACE_DISABLE procedure.D、 Set the value of the LOG_ARCHIVE_TRACE initialization parameter to zero.
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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.
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You are maintaining the PROD database for NetFx Corporation. You have configured controlfile autobackup in your database. At 6：00 P.M. on Monday， you issue the following command： RMANBACKUP DATABASE； At 8：00 A.M. on Tuesday， you are unable to start the database because all the control files are missing. You decide to restore the control files from the backup by using the RMAN RESTORE CONTROLFILE FROM AUTOBACKUP； command. Which operation should you perform before using the RMAN RESTORE CONTROLFILE FROM AUTOBACKUP； command？（）A、 Start the database in the MOUNT stage.B、 Back up the control file to trace.C、 Set the DBIDD、 Issue the RECOVER DATABASE command.
考题
You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance？（）A、run Segment AdvisorB、run SQL Tuning Advisor on top SQL statementsC、run the Automatic Workload Repository （AWR） reportD、run the Automatic Database Diagnostic Monitor （ADDM）on top SQL statements
考题
In your test database， you find that a user’s session is executing a lot of SQL statements， resulting in the generation of a large number of trace files. While investigating the reason， you find that SQL trace has been enabled at the instance level. You want to disable SQL trace， remotely， only for that user session to reduce the volume of trace data being generated.How do you achieve this objective？（）A、 by setting the SQL_TRACE parameter to FALSE in the parameter fileB、 by using DBMS_MONITOR.SESSION_TRACE_DISABLE to disable the tracing for the user sessionC、 by setting the SQL_TRACE parameter to FALSE by using the ALTER SYSTEM command in the user sessionD、 by setting the SQL_TRACE parameter to FALSE by using the ALTER SESSION command in the user session
考题
单选题You are maintaining the PROD database for NetFx Corporation. You have configured controlfile autobackup in your database. At 6：00 P.M. on Monday， you issue the following command： RMANBACKUP DATABASE； At 8：00 A.M. on Tuesday， you are unable to start the database because all the control files are missing. You decide to restore the control files from the backup by using the RMAN RESTORE CONTROLFILE FROM AUTOBACKUP； command. Which operation should you perform before using the RMAN RESTORE CONTROLFILE FROM AUTOBACKUP； command？（）A
Start the database in the MOUNT stage.B
Back up the control file to trace.C
Set the DBIDD
Issue the RECOVER DATABASE command.
考题
单选题You have specified the warning and critical threshold values of an application tablespace to be 60% and 70%， respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（）A
The EVENT parameter was not set.B
The SQL_TRACE parameter is set to FALSEC
The Enterprise Manager Grid Control is not used.D
The STATISTICS_LEVEL parameter is set to BASICE
The TIMED_STATISTICS parameter is set to FALSE
考题
单选题You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance？（）A
run Segment AdvisorB
run SQL Tuning Advisor on top SQL statementsC
run the Automatic Workload Repository （AWR） reportD
run the Automatic Database Diagnostic Monitor （ADDM）on top SQL statements
考题
单选题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.
考题
单选题You are maintaining an OLTP database in Oracle10g. You set the value of the LOG_ARCHIVE_TRACE parameter to zero. What is the impact of this setting？ （）A
The trace files will be disabled only for a specific session.B
Tracing will be disabled for a client identifier.C
Tracing will be disabled only for the ARCn process.D
The SQL Trace facility will be disabled for the instance.
考题
单选题In your test database， you find that a user’s session is executing a lot of SQL statements， resulting in the generation of a large number of trace files. While investigating the reason， you find that SQL trace has been enabled at the instance level. You want to disable SQL trace， remotely， only for that user session to reduce the volume of trace data being generated. How do you achieve this objective？（）A
by setting the SQL_TRACE parameter to FALSE in the parameter fileB
by using DBMS_MONITOR.SESSION_TRACE_DISABLE to disable the tracing for the user sessionC
by setting the SQL_TRACE parameter to FALSE by using the ALTER SYSTEM command in the user sessionD
by setting the SQL_TRACE parameter to FALSE by using the ALTER SESSION command in the user session
考题
单选题You have specified the warning and critical threshold values of an application tablespace to be 60% and 70% respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（）A
The EVENT parameter was not setB
The SQL_TRACE parameter is set to FALSEC
The Enterprise Manager Grid Control is not usedD
The STATISTICS_LEVEL parameter is set to BASICE
The TIMED_STATISTICS parameter is set to FALSE
考题
单选题You are maintaining an OLTP database in Oracle10g. You find that the database is generating a large number of trace files. You decide to disable the trace files generated by the ARCn background process. Which action will enable you to disable the trace files generated by the ARCn background process？（）A
Remove the LOG_ARCHIVE_DEST parameter from the init.ora file.B
Set the value of the SQL_TRACE parameter to FALSE in the init.ora file.C
Use the DBMS_MONITOR.SESSION_TRACE_DISABLE procedure.D
Set the value of the LOG_ARCHIVE_TRACE initialization parameter to zero.
考题
单选题You are maintaining the SALES database for eSoft Corporation. You have not configured ASMM on the database. You want to know what size of the SGA will provide the best performance. Which advisor would you use to determine the suitable size of the SGA？（）A
SQL Tuning AdvisorB
Undo AdvisorC
ADDMD
Memory Advisor
考题
单选题You are connected to a pluggable database (PDB) as a common user with DBA privileges. The STATISTICS_LEVEL parameter is PDB_MODIFIABLE. You execute the following: SQL ALTER SYSTEM SET STATISTICS_LEVEL = ALL SID = ‘*’ SCOPE = SPFILE; Which is true about the result of this command?（）A
The STATISTICS_LEVEL parameter is set to all whenever this PDB is re-opened.B
The STATISTICS_LEVEL parameter is set to ALL whenever any PDB is reopened.C
The STATISTICS_LEVEL parameter is set to all whenever the multitenant container database (CDB) is restarted.D
Nothing happens; because there is no SPFILE for each PDB, the statement is ignored.
考题
单选题You are maintaining your database in Oracle10g. You have set the value of the STATISTICS_LEVEL initialization parameter to TYPICAL and the value of the FAST_START_MTTR_TARGET parameter to 900 seconds. To increase the performance of the database， you want to determine the optimal size of the online redo log files. Which tool enables you to determine the optimal size of the online redo log files？（）A
Oracle Enterprise ManagerB
The V$LOG viewC
The V$LOGFILE viewD
The V$FLASHBACK_DATABASE_LOGS view
考题
单选题You are maintaining your database in Oracle10g. You set the value of the UNDO_RETENTION initialization parameter to zero in the initialization parameter file. What will be the impact of specifying this setting？（）A
The database will not start.B
The database will start but will not retain the undo data in the undo segment.C
The database will start， and the undo segment will contain the undo data for at least one hour.D
The database will start， and the undo segment will retain the undo data for at least 15 minutes.
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