Richard Louapre [http://community.jboss.org/people/richard.louapre] created the discussion "petclinic project deployment issue with jboss7" To view the discussion, visit: http://community.jboss.org/message/643046#643046 -------------------------------------------------------------- Hi, I followed the instructions from http://community.jboss.org/blogs/mariusb/2011/07/13/spring-and-jboss-as7-... this blog But the deployment in jboss7 failed with the error message: 07:30:17,917 INFO  [org.jboss.as.server.deployment] (pool-2-thread-2) Content added at location D:\Download\Java\JBoss\jboss-as-7.0.2.Final\standalone\data\content\7fc87bc5dd5eb9e451cee831e13453be9d94491b\content 07:30:18,006 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-15) Starting deployment of "petclinic.war" 07:30:20,615 INFO  [org.jboss.as.jpa] (MSC service thread 1-9) added javax.persistence.api, javaee.api, org.jboss.as.jpa, org.javassist dependencies to petclinic.war 07:30:21,287 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-15) MSC00001: Failed to start service jboss.deployment.unit."petclinic.war".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.unit."petclinic.war" .INSTALL: Failed to process phase INSTALL of deployment "petclinic.war"         at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121) [jboss-as-server-7.0.2.Final.jar:7.0.2.Final]         at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]         at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:1.0.1.GA]         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_25]         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_25]         at java.lang.Thread.run(Thread.java:662) [:1.6.0_25] Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: only one persistence provider can be packaged with an application [oracle.toplink.essentials.PersistenceProvider, oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider, org.apache.openjpa.persistence.PersistenceProviderImpl, org.hibernate.ejb.HibernatePersistence]         at org.jboss.as.jpa.processor.PersistenceProviderProcessor.deploy(PersistenceProviderProcessor.java:65)         at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115) [jboss-as-server-7.0.2.Final.jar:7.0.2.Final]         ... 5 more I also tried to get the complete modified example for https://github.com/mbogoevici/spring-samples/tree/as7-blog github but I have the same deployment issue. How can I solve this issue? Thanks,    Richard. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/643046#643046] Start a new discussion in Snowdrop at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]