Hi Santosh,bmycroft,

Thanks for your reply.

Let me know to the which process it connects on Unix.

A instance is an combination of Memory and the background process ,,,,is in it.

In that case,As per the above reply u have said it will connect to idea instance?Whatz this Idle Instance?

When no SGA and Background process is running then...(when database is down)howz this proceedure is done.

Let me know the answer at the earliest.

Regards,
Vinod