[technology1]

Thanks for your help.everything has resolved.
but I followed my own steps with help of the links available on BB forum.

BES for Lotus Domino

In the above scenario particularly where everything change except the db.

If you got exact above scenario.
Note: No need to update the db in this case, too troublesome.
1. Shutdown BB and lotus on the old one.
2. Install the new BB ver. on the new server as per normal instructions and connect to the current db, after installation shutdown BB and lotus on the new one.
3. Copy the BES folder from old server to the new server under same location c:\lotus\domino\data
4. On the new server, go to the command prompt, change directory to c:\lotus\domino\data and run nfixup bes ( while bes is the folder u just copied under this location) ( this will fixup all inconsistencies)
5. nupdall bes –R ( this will re-build and update all views)
6. ncompact bes –c ( this will correct all corruption in all dbs inside)
7. turn on BB and lotus notes on the new one
8. turn on only lotus on the old one , stop all BB services. ( this will allow one by one user migration and delete user from old lotus notes)
9. Open up BB on the new server and move user 1 by 1 and u can see that this user would be welcomed by the new server and rock and roll 