Thierry FLORAC wrote:

Hi,

I'm currently using DBTab (1.2) to split my Zope database into three entities : - a Data.fs for my "main" database - a Catalog.fs for my huge "full-text indexing" catalog - a Users.fs to store my users database. These three databases are always and heavilly used by every request.

I'm now going to add several new specific applications. For each of these applications, I'd like to create a new data file specific to it, but I have a few questions about this : - does it have any drawback ? - is there any limit on the number of data files that can be used without performance loss ? - when a request is received which doesn't implies any of these specific applications, are database connections automatically opened on them or not ?

The current version of DBTab opens all databases on every request. However, opening a connection really just involves setting a few attributes and bringing the object cache up to date. So I don't know at what point you'll start seeing speed reductions as a result of multiple databases. Try adding a few dozen and see if it makes any difference. The good news is that this is the only potential speed barrier I can think of. Shane