[ZODB-Dev] ConflictError: database conflict error

[Bob Horvath]

Tim Peters wrote:

>[Bob Horvath]
>  
>
>>Yea, I saw your email suggesting newer tools might work better and was in
>>the process of rerunning and debugging using them and literally fell
>>asleep at the keyboard and never finished it last night.
>>    
>>
>
>That's no excuse <wink>.
>
>I can tell from the output that you're still not using the current (3.2.4)
>ZODB, so you're not using the best version of fsrefs.py.  Or maybe you're
>using a current fsrefs.py script, but didn't grab the rest of ZODB 3.2.4?
>
>...
>  
>

Hmm, I thought I had replied to this, but don't see it.  Apologies if I 
am sending twice.

I am trying to use the 3.2.4 ZODB tools. I have a PYTHONPATH including 
the ZODB directory and the python libs from a 2.7.0 version of Zope.

>  
>
>>I'll fix up those files later tonight.  An interesting thing is running
>>the newer tools doesn't yield any "failed to loads", but rather a lot of
>>"referes to invalid objects".
>>
>>
>>http://files.horvath.com/fsrefs.out  (newer fsrefs)
>>http://files.horvath.com/fsrefs.old  (older fsrefs)
>>
>>If you look at the older one, there are two POSKeyErrors in there that
>>are not in the newer one.
>>    
>>
>
>Yes, it's complaining about an object whose creation has been undone --
>there is no current revision of the object.  Newer versions of fsrefs.py
>handle that more gracefully.  Note that the two oids in the POSKeyErrors are
>precisely the same oids as in the two "failed to load" messages.  The newer
>fsrefs don't complain about those, simply because there's nothing wrong
>about undoing the creation of an object; it was a bug that fsrefs.py used to
>complain about those.
>  
>

OK, so running the new tools yields a lot (57 objects) of "refers to 
invalid objects" (279 objects).   What options are there to fix it?

- edit or fix objects from the /manage interface
- edit, fix, or deleted from the python command line
- getting out a hex editor and hacking the file to bits

I've tried the second option but have not been successful at figuring 
out how to make the calls to delete an object.