Step_1. Create a text File and paste the below code:
Step_2. Now re-write this code based on your info,
Step_3. Save and rename file *.txt* to *.bat*
Stwp_4 . Now Double click on your file. Wait and see.
Procedure:
Example:
exp e_com/ecom123@orcl file=D:\DB\ecom_bk.dmp