Hii...im new in db...
i have a million record in old system and im try to transfer database to new system using sqlldr...but the problem is,in old system have a separated database like DB_A,DB_B,DB_C and got 10 different database transaction and want to transfer to new system means from 10 merge to 1 database,and another problem if got one customer register into DB_A and also register to DB_B how i can make sure this customer not to mix up or duplicate..

Can multiple table with different database want to merge into 1 database?

Can anyone help me find out about this problem..plss...

I think you posted this question on the wrong forum - maybe you need Oracle.

Hii BELLO4KA...thanks for the replay and advice....take note...