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TABLE 18–10JDBC Connection Pool Statistics

(Continued)

 

 

Statistic

Units

Data Type

Description

 

 

 

 

numconnacquired

Number

CountStatistic

Number of logical connections

 

 

 

acquired from the pool.

 

 

 

 

numconnreleased

Number

CountStatistic

Number of logical connections

 

 

 

released to the pool.

 

 

 

 

JMS/Connector Service Statistics

The statistics available for the connector connection pools are shown in Table 18–11.Statistics for Connector Work Management are shown in Table 18–12.

TABLE 18–11Connector Connection Pool Statistics

Statistic

Units

Data Type

Description

 

 

 

 

numconnfailedvalidation

Number

CountStatistic

The total number of connections in the

 

 

 

connection pool that failed validation

 

 

 

from the start time until the last sample

 

 

 

time.

 

 

 

 

numconnused

Number

RangeStatistic

Provides connection usage statistics.

 

 

 

The total number of connections that

 

 

 

are currently being used, as well as

 

 

 

information about the maximum

 

 

 

number of connections that were used

 

 

 

(the high water mark).

 

 

 

 

numconnfree

Number

RangeStatistic

The total number of free connections in

 

 

 

the pool as of the last sampling.

 

 

 

 

numconntimedout

Number

CountStatistic

The total number of connections in the

 

 

 

pool that timed out between the start

 

 

 

time and the last sample time.

 

 

 

 

averageconnwaittime

Number

CountStatistic

Average wait time of connections before

 

 

 

they are serviced by the connection pool.

 

 

 

 

waitqueuelenght

Number

CountStatistic

Number of connection requests in the

 

 

 

queue waiting to be serviced.

 

 

 

 

connectionrequestwaittime

 

RangeStatistic

The longest and shortest wait times of

 

 

 

connection requests. The current value

 

 

 

indicates the wait time of the last request

 

 

 

that was serviced by the pool.

 

 

 

 

numconncreated

Milliseconds

CountStatistic

The number of physical connections

 

 

 

that were created since the last reset.

 

 

 

 

184

Sun GlassFish Enterprise Server 2.1 Administration Guide • December 2008

Page 184
Image 184
Sun Microsystems 820433510 manual JMS/Connector Service Statistics, 11Connector Connection Pool Statistics