Hi, We are running some heavy load testing using Tomcat 3.1, JDK 1.2.1.04 on Solaris with Apache and Jserv. As our tests ramp up, we invariably get the error below. We have changed our file descriptors from 64 to 256, but this did not appear to change the results. Per below, we are using PoolTcpConnector connector or 500 max connection, and 200 & 100 max/min spare threads respectively. Any ideas what the 'too many open files' really indicates? Thanks for you help! System.out ---------- 500 200 100 Starting tcp endpoint on 8007 with org.apache.tomcat.service.connector.Ajp12ConnectionHandler ... java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.socketAccept(Compiled Code) at java.net.PlainSocketImpl.accept(Compiled Code) at java.net.ServerSocket.implAccept(Compiled Code) at java.net.ServerSocket.accept(Compiled Code) at org.apache.tomcat.service.PoolTcpEndpoint.acceptSocket(Compiled Code) at org.apache.tomcat.service.TcpWorkerThread.run(Compiled Code) at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(Compiled Code) at java.lang.Thread.run(Compiled Code) Endpoint ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=8007] shutdown due to exception: java.net.SocketException: Too many open files --------------- Steve McIntyre Email: [EMAIL PROTECTED] Tickets.com - "Official Ticketing Supplier to the 2002 Olympic Winter Games"