IEM database connection error while upgrading 9.2.3 to 9.5.2

While upgrading IEM 9.2.3 to 9.5.2 i am getting DB connection error when i run BES-server.exe

I am using Local Database ( windows 2008 r2 , SQL 2008 R2)

I presume the suggestion is open a PMR for this type of issues
http://www-01.ibm.com/support/docview.wss?uid=swg21505708

Yes, PMR opened for this issue and closed.
Thanks

Hi

Please provide me the Solution for Database Error.

Regards,
Suresh H

Suresh, sorry i missed the tech notes for this issue , i am checking and will share if i find the one , but i guess for this issue we removed some reg keys for uninstall and install like a fresh pkg with the previous folder backup.