There is just guessware in your information, especially about ...

  - NW version

  - NMM version

  - Sybase version

and whether the configuration has worked earlier.

It looks like a Sybase problem "Msg 8009, Level 16, State 1" which NW (nsrdasv) just forwards.

You can find a bunch of entries in the internet refering to this message.

So before I would check NW I personally would go ahead and check the Sybase logs first.

Hello Bingo,

Sorry for the delay in replying. To our luck, i just tried taking a backup today and it completed to our surprise.

Issue observed with libnsrsyb.dll file

Initially we tried with 8.2.3.4 dll file and it failed. As part of troubleshooting we used older 8.2.1.0 dll but that went invain.

Today i just kept the new DLL back in sybase directory and backup went fine.

Thanks for checking this bingo...