SOA 12c is the most important release of Oracle's flagship integration product set that we've seen for 5 years (when 11g was launched). Oracle has also now produced the first SOA 12c bundle patch-set (184.108.40.206.1) so in my opinion any new SOA installations should definitely be using 12c, and existing 11g users should be seriously considering upgrading to take advantage of the many new features.
For administrators what is particularly nice about this release is that a lot of work has clearly een put into the upgrade process, building on some of the changes introduced in WebLogic 12.1.2. The upgrade is actually surprisingly straightforward - in outline you have to:
Of course you may only have short-lived processes so be able to drain down the old SOA 11g system and switch over to a brand new SOA 12c system running in parallel, in which case the above upgrade is probably unnecessary.
The above does not consider migration from SOA Suite 10g to 11g/12c which is much more complicated and, if you've not already done it by now, a project in itself. Plus I've not mentioned Service Bus or BAM yet but we'll describe in more detail in a week's time... Read the complete article here.
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