We use Jboss 4.0.4 in our production site and we user mssql server 2000 as DB. Today site was suddenly down. when we type our url browser says "page cannot be displayed" We checked the server.log file it doesn'e have any specific errors. Also during the down time there were some logs as well. What can be the reasons to hapeen this kind of thing. We use record level locking in our system. can it be cause the problem. which means all onnections are used.