Fetching BLOBs

Hi team

 

I have a very intersting question to all of you. Pls help me to build this query, I want to fetch more that 70,000 BLOB from different customer servers. the issue is there are some BOLB files with common names on all servers. So I want merge these files into a single BLOB during  fetching data. I am able to fetch the  BLOB data from all cust servers but unfortunatelly it overwrite previous file.

 

So pls provide any simple query format for the same, assuming two table tab1 & tab 2.

 

Ashish  ............. INDIA