View the Exhibit.
Examine the query on the v$servicemetric view and the output.You wish to
define a service-level threshold based on wall-clock time to monitor the performance of the
service.
Which metric should be used to set the appropriate threshold?
A.
DELTA
B.
CPUPERCALL
C.
CALLSPERSEC
D.
DBTIMEPERSEC
E.
DBTIMEPERCALL
http://docs.oracle.com/cd/B28359_01/server.111/b28320/dynviews_3010.htm
V$SERVICEMETRIC
Displays metric values measured on the most recent time interval period for services executing inside the database.
Service metrics are measured in 5-second and 1-minute intervals.
DELTA
Indicates the predicted increase in the goodness for every additional session that is routed to this instance
CPUPERCALL
CPU time per call (in microseconds)
CALLSPERSEC
Number of user calls per second
DBTIMEPERSEC
Database time per second
DBTIMEPERCALL
Elapsed time per call (in microseconds)
wall-clock time to measure performance
E. DBTIMEPERCALL is the one