Question

I insert some data into a sql server 2005 database using NHibernate. Before I insert an object I check whether it already exists based on its primary key. Every 100000 or so lookups this seems to throw some exception (if I do the same via sql it takes ages as well). A defragmentation of the hard disk seems to help but seems a bit strange that I have to do this – or is this normal?

BTW I know that I could use bulk insert but had to opt for NHibernate for certain reasons …

Thanks.

Christian

Answer 1

Likely to be database file growth if it’s 100k inserts. Do you:

• shrink the database at all?
• have large growth increment?
• not have instant file initialisation enabled?

Defragging the filesystem is only useful for generating IO time-outs