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Migrating IBM WAS 6.x enterprise applications to WAS 7.x / WAS 8.x

Posted by Unknown Jumat, 07 Juni 2013 0 komentar

Please find my quick note on migrating IBM WAS 6.x applications to WAS 7.x/WAS 8.x. This is specific to some project, but could be customized for general needs.

Question 0 : Why do we need to migrate WAS 6.x to WAS 7.x ?

ANS : Please refer IBM WAS End of Support chart ->
http://www-01.ibm.com/software/support/lifecycleapp/PLCSearch.wss?q=WAS&scope=S962652E67398D77-X007925I73652A47&ibm-search.x=12&ibm-search.y=11&ibm-search=Search&sort=E

Question 1 : If we have decided to migrate, then why are we going for WAS 7.x instead of WAS 8.x, could save another near future migration project.

ANS : We can, but we need to see whether the libraries supported by WAS 6.x are supported by WAS 8.x as well. The RED marked ones are of little bit concern.

So we need to identify the libraries used in current application, and see their compatibility with the new IBM WAS 7.x or IBM WAS 8.x
Apart from these, there is a performance bonus as well.

Please refer this guide for finding the advantages of WAS 8.x migration.
http://www.ibm.com/developerworks/websphere/techjournal/1206_alcott/1206_alcott.html

Question 2 : Do we have any step by step procedure for the same

ANS : IBM has published standard guideline for migration, please find the same here -
http://publib.boulder.ibm.com/infocenter/prodconn/v1r0m0/topic/com.ibm.scenarios.wmqwasmig2v7.doc/wmq_was_mig2v7.pdf
For migrating Messaging part, please refer the following guide
http://publib.boulder.ibm.com/infocenter/wmbhelp/v7r0m0/index.jsp?topic=%2Fcom.ibm.etools.mft.doc%2Fah14130_.htm

Question 3 : Any migration tools available with IBM or with any third party ?

Yes, but not sure how far it can work on specific applications/environments, but nothing wrong in having a try.
http://www.ibm.com/developerworks/websphere/library/techarticles/0812_luchini/0812_luchini.html

Question 4 : What are the risks involved and their mitigations ? Any historical information ?

Some issues and mitigations from historical information.
http://bairdblog.wordpress.com/2009/11/20/migrating-from-websphere-6-0-to-websphere-7-0/

Question 5 : Any other references ?

This shares some of the interesting migration issues with "Weblogic" server migration, which I feel stands valid for IBM WAS as well.
http://docs.oracle.com/cd/E19747-01/819-0083/mgmistr.html

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Judul: Migrating IBM WAS 6.x enterprise applications to WAS 7.x / WAS 8.x
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