[ZODB-Dev] merging databases containing multidatabase references

[Jim Fulton]

On Apr 23, 2009, at 6:02 PM, David Glick wrote:

> I have a multidatabase of 3 databases containing a handful of
> multidatabase references.  (This was created out of a combination of
> naivety along with a desire to be able to work with smaller files if I
> need to pull down a local copy of the database from the server.)  Of
> course, now I am running into trouble because I cannot pack one of the
> databases without occasionally having an object get garbage collected
> that is still referenced from another database, which leads to
> POSKeyErrors when I try to load the object containing that reference.


In ZODB 3.9, you can pack without doing garbage collection.  This  
should at least buy you time, if not solve your problem (depending on  
how much garbage your application creates.

In the (near?) future, we'll be providing a multi-database garbage  
collector that works independently of packing.

Jim

--
Jim Fulton
Zope Corporation