J2C connection pool data counters

The J2C connection pool data counters are used to monitor the J2C connection pool performance. The data can be found by using the Tivoli Performance Viewer and looking under each application server. Click application_server > J2C connection pool.

Data counter definitions

Name	Description	Version	Granularity	Type	Level
Number managed connections	Number of ManagedConnection objects in use	5.0	per connection factory	CountStatistic	Low
Number connections	Current number of connection objects in use	5.0	per connection factory	CountStatistic	Low
Number managed connections created	Total number of connections created	5.0	per connection factory	CountStatistic	Low
Number managed connections destroyed	Total number of connections destroyed	5.0	per connection factory	CountStatistic	Low
Number managed connections allocated	Total number of connections allocated	5.0	per connection factory	CountStatistic	Low
Number managed connections freed	Total number of connections freed	5.0	per connection factory	CountStatistic	Low
faults	Number of faults, such as timeouts, in connection pool	5.0	per connection factory	CountStatistic	Low
free pool size	Number of free connections in the pool	5.0	per connection factory	BoundedRangeStatistic	High
pool size	Pool size	5.0	per connection factory	BoundedRangeStatistic	High
concurrent waiters	Average number of threads concurrently waiting for a connection	5.0	per connection factory	RangeStatistic	High
Percent used	Average percent of the pool that is in use	5.0	per connection factory	RangeStatistic	High
Percent maxed	Average percent of the time that all connections are in use	5.0	per connection factory	RangeStatistic	High
Average wait time	Average waiting time in milliseconds until a connection is granted	5.0	per connection factory	TimeStatistic	Medium
Average use time	Average time in milliseconds that connections are in use	5.0	per connection factory	TimeStatistic	Medium