Is Interop.Domino dll thread safe ?

Question

Hi ,

I am using Interop.Domino dll version 1.2 in c# application, and using multithreading to access multiple NSF file at same time by creating new session for each thread created (Max 5 threads at a time).

For the large NSF files, I was getting the Notes error like memory segment overflow. To overcome this problem, i used Marshal.ReleaseComObject(object) to release the necessary Notesdocument, and NotesView object where ever possible.

Now, the issues is like, i am able to access 2 NSF files but the rest threads are going in dll exceptions as few Notes object are getting null.

Kindly provide me some help....

Thanks for help.