Weblogic STUCK ThreadsTuning also closed normal users threads

Issue details :

Our application is using Web-logic to manage REST web-service from external system, the external system will continuously call webservice for a set period of time.

Example : from 9 AM to 9:30 AM around 700 webservice calls

In the beginning : we set up Stuck Thread Max Time to 600s. so we will see lot of webservice calls got failed after 9:10 AM. Meanwhile , some normal users' login session were closed too ,user just login in for few mins .

because webservice call can be reprocessed, there is no complain,but users always complained . As a workaround to avoid issue to users' session , we updated