Too many open files Exception

Hi ,
I am getting the following exception in weblogic servers.Can someone help me out to resolve the issue?

####<Feb 8, 2013 1:00:40 PM EST> <Error> <Cluster> <dayrhegrdq004.enterprisenet.org> <pnbr21_qa01> <[ACTIVE] ExecuteThread: '14' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1360346440584> <BEA-000141> <TCP/IP socket failure occurred while fetching statedump over HTTP from -4047200945559644330S:10.7.35.128:[7002,7002,-1,-1,-1,-1,-1]:masr21qa:masr21_qa05.
weblogic.socket.SocketOptionException: Too many open files
        at weblogic.socket.SocketMuxer.initSocket(SocketMuxer.java:484)
        at weblogic.socket.SocketMuxer.newSocket(SocketMuxer.java:371)
        at weblogic.socket.SocketMuxer.newClientSocket(SocketMuxer.java:383)
        at weblogic.socket.ChannelSocketFactory.createSocket(ChannelSocketFactory.java:86)