Connection Pool issue in Weblogic 8.1 SP5

[Biswamohan Padhy]

The Connection Pool capacity:80

Oneday The connections held by our four managed servers are

server1:- 0
server2:- 61
server3:- 4
server4:- 7

Connections held by server2 is not decreasing from 61, but increasing from 61 and coming down to 61.

after sometime it stucks at a higher value and eventually reaches the maximum capacity, and stucks at that, causing failure of transactions. So we are forced to restart the managed server.

Can anyone help us in this regard???

[Roger Chung-Wee]

Are your applications obtaining Connections from the pool as late as possible and returning them to the pool as soon as they are finished with them.

[Biswamohan Padhy]

yeah.
Can you advice is there any point/state after reaching where a application server's connection pool fails to shrink it size.

In our ApplicationServer the shrink frequency has been set to 900 seconds it means in each 15 mins, the connection pool will get refreshed to it's initial capacity.But that is also not happening.