Ravi Samavedula [https://community.jboss.org/people/samavedulark] created the discussion "WARNING [sun.rmi.transport.tcp] (RMI TCP Accept-0) RMI TCP Accept-0: accept loop for" To view the discussion, visit: https://community.jboss.org/message/760890#760890 -------------------------------------------------------------- Hi, I am using Jboss 5.1.0 on a 64 bit Windows R2 machine. We have JCA implementation and JMS also. It gets messages on TCP endpoint and post it to topic. messages to the TCP port comes at a pace of 20/sec. So JCA handles it using Threads. But we are facing an issues, below is the error it logs. 2012-09-21 20:06:44,182 WARNING [sun.rmi.transport.tcp] (RMI TCP Accept-0) RMI TCP Accept-0: accept loop for ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=3420] throws java.lang.OutOfMemoryError: unable to create new native thread     at java.lang.Thread.start0(Native Method)     at java.lang.Thread.start(Thread.java:597)     at java.util.concurrent.ThreadPoolExecutor.addIfUnderMaximumPoolSize(ThreadPoolExecutor.java:727)     at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:657)     at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:384)     at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:341)     at java.lang.Thread.run(Thread.java:619) Is JCA is unable to handle or manage threads? 1 gb Xmx is allocated and 256m for permsize. Machine has total of 4 gb. Thanks -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/760890#760890] Start a new discussion in JBoss Messaging at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]