java.io.IOException: No locks

We were encountering problems with starting both nodemanager and WebLogic on a OID installation. Noticed below errors in the server logs and when I ran "/etc/init.d/nfslock status", I got a message that said "rpc.statd dead but pid file exists".

This error is usually caused by the NFS lockd not running or malfunctioning. Other NFS daemons not running/malfunctioning may cause similar errors too.

Engage a unix admin who can look at startup script for statd, and figuring out what it was checking for. Usually there could be some lock files (not pid file) which would be causing statd to basically abort starting up. Deleting the file and restarting nfslock would resolved the issue. Thereafter we were able to bring the nodemanager and weblogic fine.


<BEA-300033> <Could not execute command "getVersion" on the node manager. Reason: "I/O error while reading domain directory".>
<Error> <NodeManager> <BEA-300033> <Could not execute command "getVersion" on the node manager. Reason: "I/O error while reading domain directory".>
<Info> <ServletContext-/bea_wls_internal> <BEA-000000> <HTTPClntLogin: Login rejected with code: 'Failed', reason: 

java.net.ProtocolException: HTTP tunneling is disabled
        at weblogic.rjvm.http.HTTPServerJVMConnection.acceptJVMConnection(HTTPServerJVMConnection.java:84)
        at weblogic.rjvm.http.TunnelLoginServlet.service(TunnelLoginServlet.java:80)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:821)
        at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
        at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
        at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
        at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3686)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
        at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
        at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
        at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)