Thestatistics available for the JDBC connection pool are shown in the following table.
TABLE18–10 JDBCConnection Pool Statistics
Statistic Units DataType Description
numconnfailedvalidation Number CountStatistic Thetotal number of connections
inthe connection pool that failed
validationfrom the start time
untilthe last sample time.
numconnused Number RangeStatistic Providesconnection usage
statistics.The total number of
connectionsthat are currently
beingused, as well as information
aboutthe maximum number of
connectionsthat were used (the
highwater mark).
numconnfree Number CountStatistic Thetotal number of free
connectionsin the pool as of the
lastsampling.
numconntimedout Number BoundedRangeStatistic Thetotal number of connections
inthe pool that timed out
betweenthe start time and the last
sampletime.
averageconnwaittime Number CountStatistic Indicatesthe average wait time of
connectionsfor successful
connectionrequest attempts to
theconnector connection pool.
waitqueuelength Number CountStatistic Numberof connection requests
inthe queue waiting to be
serviced.
connectionrequestwaittime RangeStatistic Thelongest and shortest wait
timesof connection requests. The
currentvalue indicates the wait
timeof the last request that was
servicedby the pool.
numconncreated Milliseconds CountStatistic Thenumber of physical
connectionsthat were created
sincethe last reset.
numconndestroyed Number CountStatistic Numberof physical connections
thatwere destroyed since the last
reset.
AboutMonitoring
Chapter18 • Monitoring Components and Ser vices 183