Business Connector proxy account(Session type is web user) is getting incremented automatically ?

Hi

We are using web based application which is integrated with AX using business connector .

It was working fine and all of sudden we are seeing in AX → online users->bcproxy (session type is web user) is getting incremented and reaching 2000,for which ax is stuck and telling AOS has reached it’s maximum limit or memory consumption.

Did the following things which is giving the temp solution but after sometimes the same exception is coming.

Deleted cache(.AUC) file and increased the buffer size 60 to 80 in server configuration.

So i can’t delete all bcproxy sessions in each hour or even recycling the application pool.

Now it reached 2000 web users and ax is tuck,Now even i can’t open ax also,