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java.util.ConcurrentModificationException: 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:782)	at java.util.HashMap$KeyIterator.next(HashMap.java:818)	at weblogic.rjvm.ConnectionRuntime.(ConnectionRuntime.java:68)	at weblogic.rjvm.ConnectionRuntime.getConnections(ConnectionRuntime.java:26)	at weblogic.t3.srvr.ServerRuntime.getConnections(ServerRuntime.java:871)	at sun.reflect.GeneratedMethodAccessor1151.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:324)	at weblogic.management.internal.DynamicMBeanImpl.getAttribute(DynamicMBeanImpl.java:574)	at com.sun.management.jmx.MBeanServerImpl.getAttribute(MBeanServerImpl.java:1183)	at com.sun.management.jmx.MBeanServerImpl.getAttribute(MBeanServerImpl.java:1153)	at weblogic.management.internal.RemoteMBeanServerImpl.getAttribute(RemoteMBeanServerImpl.java:287)	at weblogic.management.internal.RemoteMBeanServerImpl_WLSkel.invoke(Unknown Source)	at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:477)	at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:420)	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)	at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:144)	at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:415)	at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)	at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)	at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)