单选题View the Exhibit to examine the metrics with a threshold.Which statement is true regarding the Number of Transactions (per second) metric?（）A Oracle uses statistical relevance to determine when an adaptive threshold has been breached for the metric.B

A. Accept the recommended SQL profile.

B.Collect statistics for the related objects.

C. Run the Access Advisor for the SQL statement.

D. Run the Segment Advisor for recommendations.

A. Oracle uses statistical relevance to determine when an adaptive threshold has been breached for the metric.

B. The statistics for the metric values observed over the baseline time period are not examined to determine threshold values.

C. Oracle determines when an adaptive threshold has been breached based on the maximum value captured by the baseline.

D. The total concurrent number of threshold violations, which must occur before an alert is raised for the metric, has been set to zero.

A. The tape I/O performed is asynchronous

B. The tape buffer is allocated from the System Global Area (SGA)

C. The tape buffer is allocated from the Program Global Area (PGA)

D. Oracle I/O uses an interrupt mechanism to determine when each I/O completes

View the Exhibit exhibit1 to examine the series of SQL commands. View the Exhibit exhibit2 to examine the plans available in the SQL plan baseline. The baseline in the first row of the Exhibit is created when OPTIMIZER_MODE was set to FIRST_ROWS.Which statement is true if the SQL query in exhibit1 is executed again when the valueof OPTIMIZER_MODE is set to FIRST_ROWS?（）

A. The optimizer uses a new plan because none of the plans in the exhibit2 are fixed plans.

B. The optimizer uses the plan in the second row of the exhibit2 because it is an accepted plan.

C. The optimizer uses the plan in the first row of the exhibit2 because it is the latest generated plan.

D. The optimizer uses the plan in the first row of the exhibit2 because OPTIMIZER_MODE was set to FIRST_ROW during its creation.

A. It does not allow you to change the moving window size.

B. Adaptive threshold functionalities use it by default to compute statistics.

C. It is created by default with the window size being equal to the AWR retention time.

D. It is created when the first snapshot is collected by the Automatic Workload Repository (AWR).

A. because AWR baseline is not enabled

B. because Current Open Cursors Count is not a basic metric

C. because the STATISTICS_LEVEL parameter is set to BASIC

D. because the AWR baseline is a system-defined moving window baseline

A. Another repair session is running concurrently.

B. The failure ID has not been mentioned in the command for data file 5.

C. There are new failures recorded in the Automatic Diagnostic Repository (ADR).

D. The ADVISE FAILURE command has not been issued before the REPAIR FAILURE command.

A. The FRA disk group has an asynchronous I/O bottleneck

B. The least number of I/Os are performed on the last data file in the list

C. The number of times that the backup or restore process directed the OS to wait until an I/O was complete is the highest for the last data file in the list

D. The number of times that the backup or restore process made an OS call to poll for I/O completion in Nonblocking mode is the least for the FRA disk group

A. The path to the location of the background as well as the foreground process trace files is /u01/oracle/diag/rdbms/orclbi/orclbi/trace.

B. The location of the text alert log file is /u01/oracle/diag/rdbms/orclbi/orclbi/alert.

C. The location of the trace file for the current session is /u01/oracle/diag/rdbms/orclbi/orclbi/trace.

D. The location of the XML-formatted version of the alert log is /u01/oracle/diag/rdbms/orclbi/orclbi/alert.