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It is not a matter of proper or not, but more required or not, depending on how your data pump is being used.
On the source, use the EDIT PARAMS command to create a parameter file for the data
pump. Include the following parameters plus any others that apply to your database
-- Identify the data pump group:
-- Specify database login information if using NOPASSTHRU:
[SOURCEDB <dsn_1>][, USERID <user>][, PASSWORD <pw>
I am using the PASSTHRU parameter in my data pump and just using it to transfer the data changes without performing any filtering or mapping, so i guess it is not needed in this case.
Thankyou for your answer stevencallan.
If you are using passthru in pump, you do not need any userid for pump.
It does not connect to DB.