Hi, Probably a dumb question: I know ZODB stores everything in an Object table. So, this table probably has a fixed length primary key. To maintain this, let us say there should be a counter which tracks the number of records in the table. The question is, is there any limit to this? Like Zope can hold 1million objects? Again, if that's the case and if packing does not re-assign the object id's, this 1million is superfluous because the OID for deleted objects are not reclaimed. I'm an RDBMS guy - hence this doubt. Example: Add an object A - its internal zope id is 1234 Add another object B - its internal id is 1235 Add C - internally it is 1236 Delete B. Pack it. Does it look like A - internal 1234 C - internal 1235 I know, crazy question. But we have a site which has objects added and deleted and packed at a fairly regular rate (users - lot of non-technical ones - are very much used to deleting things and adding new/fixed stuff, instead of trying to fix things to wrong ones!). I'm getting some concerns about this size now. Thanks V.Satheesh Babu Web Technologies Group, (703)-841-5348 sbabu@tnc.org The Nature Conservancy http://www.tnc.org http://vsbabu.csoft.net/ "The man who smiles when things go wrong has thought of someone to blame it on." --- Jone's Law