Think of Zimbra as a black-box appliance.
Everything under /opt/zimbra is tunes to work with Zimbra, and only Zimbra, and should only be used for/by Zimbra. Don't try to break it up, and don't try to use the pieces for anything other than Zimbra.
You won't be poking around in the db innards anyway, everything is accessible via the Zimbra-provided tools.
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Freddie
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