If you are using any zClass objects and have them cataloged, then you need to run a script against them to do the reindexing, as I found out that changed at 2.8.

Also if you are using DTML and using any sorting within dtml-in segments, you will need to patch a file. Pages that use sorting on dtml-in throw a weird error. The patch works fine but since it sounds like no one who maintains core Zope uses DTML, that bug probably won't get really fixed. There is an outstanding ticket open on it.


Those are the things I have found so far. We are on 2.7.5 and now that those issues are worked out we are working on our upgrade strategy.

Allen


Nightflyer wrote:

Hi All,
        I've been asked to migrate an ancient Zope server from 2.1.x to the
latest 2.x or 3.x version.

This server only have a couple of applications, both using Z SQL Methods,
DHTML methods and documents, some products and some external methods. They
don't use ZPT or Script (python) at all.

I'd like to know if you think that such migration is feasible or if I'll
encounter some problems.

Do you think it is better to migrate to the latest version of the 2.x or 3.x
branch?

If you have any link on this subject is really appreciated.

Bye,

Andrew.

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