Gagandeep, rather than try to answer your question here, I will refer you to the webMethods document “Building Integration Solutions Using Publication” (ISBuildingIntegrations.pdf). You will find very detailed answers to your questions regarding pub/sub and how the queues work. This doc can be found at the webMethods Advantage web site Bookshelf under the “webMethods Developer” section OR if you have webMethods 6.0.1. installed, look under <webMethods>\Developer\doc\guides
Regards,
Wayne
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