Failed to acquire a permit within 5 MINUTES exception in EAP 7

Issue

• We are seeing the following exception, leading the server to become unresponsive. How can we resolve this?

11:46:16,829 ERROR [org.jboss.as.ejb3.invocation] (default-threads - 9) WFLYEJB0034: EJB Invocation failed on component mycomp_MySampleCMTEJB for method public abstract void aaa.bbb.ccc.MySampleCMTEJBLocal.methodOne(aaa.bbb.ccc..myVarOne,aaa.bbb.ccc.myVarTwo): javax.ejb.EJBException: javax.ejb.EJBTransactionRolledbackException: WFLYEJB0378: Failed to acquire a permit within 5 MINUTES
    at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:188) [wildfly-ejb3-7.1.4.GA-redhat-1.jar:7.1.4.GA-redhat-1]
    at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:277) [wildfly-ejb3-7.1.4.GA-redhat-1.jar:7.1.4.GA-redhat-1]
    at org.jboss.as.ejb3.tx.CMTTxInterceptor.requiresNew(CMTTxInterceptor.java:349) [wildfly-ejb3-7.1.4.GA-redhat-1.jar:7.1.4.GA-redhat-1]
    at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:242) [wildfly-ejb3-7.1.4.GA-redhat-1.jar:7.1.4.GA-redhat-1]
    at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:422)