Newbie here. Appreciate your help. I am trying to integrate only drools expert (rules) with spring without any persistence. In spring beans config, i have specified like this. When i start my local server, I received the following error. [PersistenceUnitDeployment] Starting persistence unit persistence.unit:unitName=#org.drools.grid ERROR [AbstractKernelController] Error installing to Start: name=persistence.unit:unitName=#org.drools.grid state=Create Specification violation [EJB3 JPA 6.2.1.2] - You have not defined a jta-data-source for a JTA enabled persistence context named: org.drools.grid Spring beans config <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:drools="http://drools.org/schema/drools-spring" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://drools.org/schema/drools-spring http://drools.org/schema/drools-service-spring"> <drools:kbase id="kbase"> <drools:resources> <drools:resource type="DRL" source="classpath:testSpring.drl"></drools:resource> </drools:resources> </drools:kbase> <drools:ksession id="statelessKSession" type="stateless" name="statelessKSession" kbase="kbase"></drools:ksession> </beans> -- View this message in context: http://drools.46999.n3.nabble.com/Drools-rules-spring-integration-without... Sent from the Drools: User forum mailing list archive at Nabble.com.