DPR-ERR-2002 无法执行请求，请问如何解决？

DPR-ERR-2002 无法执行请求，因为配置的时间限制内无法连接到可用进程。
处理程序回溯：
[the_dispatcher] com.cognos.pogo.handlers.performance.PerformanceIndicationHandler
[the_dispatcher] com.cognos.pogo.handlers.logic.ChainHandler
[service_lookup] com.cognos.pogo.handlers.engine.ServiceLookupHandler
[load_balancer] com.cognos.pogo.handlers.logic.ChainHandler
[lb_forwarder] com.cognos.p2plb.clerver.LoadBalanceHandler
[queryChainHandler] com.cognos.pogo.handlers.logic.ChainHandler
[queryAsyncHandler] com.cognos.pogo.async.impl.AsyncHandler
[queryServiceHandler] com.cognos.xqebifw.cubingservices.CubingServicesHandler