Thanks for help in advance, The application(ear) is deployed successfully in jboss, when we do load test(on sockets and threads used in the application) on the application we are getting the following exception Oct-17-2008 08:30:24 ERROR jboss.naming.NamingService run.428 - Naming accept handler stopping java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353) at java.net.ServerSocket.implAccept(ServerSocket.java:448) at java.net.ServerSocket.accept(ServerSocket.java:419) at org.jnp.server.Main$AcceptHandler.run(Main.java:417) at org.jboss.util.threadpool.RunnableTaskWrapper.run(RunnableTaskWrapper.java:134) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) at java.lang.Thread.run(Thread.java:534) Oct-17-2008 08:30:24 ERROR jboss.naming.NamingService run.428 - Naming accept handler stopping java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353) at java.net.ServerSocket.implAccept(ServerSocket.java:448) at java.net.ServerSocket.accept(ServerSocket.java:419) at org.jnp.server.Main$AcceptHandler.run(Main.java:417) at org.jboss.util.threadpool.RunnableTaskWrapper.run(RunnableTaskWrapper.java:134) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) at java.lang.Thread.run(Thread.java:534) Oct-17-2008 08:30:24 ERROR jboss.naming.NamingService run.428 - Naming accept handler stopping java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353) at java.net.ServerSocket.implAccept(ServerSocket.java:448) at java.net.ServerSocket.accept(ServerSocket.java:419) at org.jnp.server.Main$AcceptHandler.run(Main.java:417) at org.jboss.util.threadpool.RunnableTaskWrapper.run(RunnableTaskWrapper.java:134) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) at java.lang.Thread.run(Thread.java:534) Oct-17-2008 08:30:26 ERROR deployment.scanner.AbstractDeploymentScanner$ScannerThread doScan.207 - Scanning failed; continuing java.lang.NullPointerException Oct-17-2008 08:30:28 ERROR jboss.naming.NamingService run.428 - Naming accept handler stopping java.net.SocketException: Too many open files at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:353) at java.net.ServerSocket.implAccept(ServerSocket.java:448) at java.net.ServerSocket.accept(ServerSocket.java:419) at org.jnp.server.Main$AcceptHandler.run(Main.java:417) at org.jboss.util.threadpool.RunnableTaskWrapper.run(RunnableTaskWrapper.java:134) at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743) at java.lang.Thread.run(Thread.java:534) Oct-17-2008 08:30:31 ERROR deployment.scanner.AbstractDeploymentScanner$ScannerThread doScan.207 - Scanning failed; continuing java.lang.NullPointerException View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4192343#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...