I suspect it's going to fail. The problem is that you're going to need a slightly more recent jdbc driver than works on the version of Java you need to run for JIRA 5.2.
It might work, but you'll need to do extensive testing with a mix of java and jdbc drivers that are not expected to work properly.
I would not bother. I would upgrade JIRA to a supported version.
If you spend enough time as a Jira admin - whether you are managing a single, mid-sized instance, a large enterprise one or juggling multiple instances at once - you will eventually find yourself in ...
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