How to tune the EJB Stateless Session Beans (SLSB) pool size in EAP 7 / 6

Solution Verified - Updated

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP)
    • 7.x
    • 6.x

Issue

  • Similar to EAP5 (slsb-strict-max-pool) is there any similar feature available in EAP6 to tune the EJBs Stateless Session Bean Pool ?

Resolution

  • Define a new pool in the ejb3 subsystem [1].

  • Associate the EJB with the pool via annotations [2] or "$EJB_JAR/META-INF/jboss-ejb3.xml" [3]

[1]

<subsystem xmlns="urn:jboss:domain:ejb3:1.3">
            <session-bean>
                <stateless>
                    <bean-instance-pool-ref pool-name="NewPool"/>
                </stateless>
               ...
            </session-bean>
            <pools>
                <bean-instance-pools>
                    <strict-max-pool name="NewPool" max-pool-size="20" instance-acquisition-timeout="5" instance-acquisition-timeout-unit="MINUTES"/>
                    ...
                </bean-instance-pools>
            </pools>
            ...

[2]

@Stateless
@org.jboss.ejb3.annotation.Pool(value="NewPool")
public class MyBean....

[3]

<jboss xmlns="http://java.sun.com/xml/ns/javaee" xmlns:p="urn:ejb-pool:1.0">
 .... 
  <assembly-descriptor>
    <p:pool>
      <ejb-name>MyBean</ejb-name>
        <p:bean-instance-pool-ref>NewPool</p:bean-instance-pool-ref>
      </p:pool>
    </assembly-descriptor>
</jboss>

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