Hello, F, >>>1. Can I reuse the same EJB and the MA88 classes? You should be able to use the same EJB, but not the MA88 classes. MA88 is not supported with WAS V5, you will either need to use the WMQ V5.3 Java classes (if you are using WMQ with WAS) or the Embedded Messaging (EM) Java classes supplied with WAS V5.
>>>2. MA88 java classes are compliant with WebSphere 5? No. In WAS you either need to use the WMQ V5.3 Java classes (if you are using WMQ with WAS) or the EM Java classes supplied with WAS V5. You might be able to connect a Java client using MA88 that runs outside of WAS to either WMQ or EM, but the issue then would be one of Support. If you use MA88 it must be the most recent release (V5.2.2). If you are using WMQ then I believe MA88 V5.2.2 will be supported through the end of the year. If you are using EM, the question of whether or not it is supported is a WAS question, I'm afraid I don't know the answer. >>>3. With WebSphere 5.0 it's mandatory use JMS and Message driven bean? You don't need to use MDBs. If you are using WAS EM then only JMS is supported. If you are using WMQ with WAS then you can use JMS, MDB, MQI Java classes, etc. >>>4. If I need to use JMS can i reuse my code into a Message Driven Bean? Don't know the answer, I'm afraid. >>>5. Do you know a IBM redbook that describe the best practice for webSphere 5 and IBM MQSeries integration? Don't know of a Redbook specifically on that subject, but I know there are several recent Redbooks that talk about using JMS and WMQ with WAS V5. You might investigate some of them. Posting these questions to a WAS group might get you more detailed answers specific to WAS. You could also try the JMS message board on http://www.mqseries.net - I've seen WAS-specific messages out there. Regards, Christopher Frank Sr. I/T Specialist - IBM Software Group IBM Certified Solutions Expert - Websphere MQ & MQ Integrator -------------------------------------------- Phone: 612-397-5532 (t/l 653-5532) mobile: 612-669-3008 e-mail: [EMAIL PROTECTED] Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive