Combining Sessions which Read Data from Different Schemas

Scenario:

I have to combine 32 sessions which read data from different (32) schemas and load target to same table.
Can you please tell me how to read parameter file which contain schema connections?

Solution:

If you want to parameterize connection, setup the session to use connection variables instead of specific connections e.g. $DBConnection<Name>. Then specify the value for the connection variable in the parameter file.

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