Read file in segments. Parallel check enabled

Summary:

Please, I would like to know how many threads open an stage Read file in segments are open.

Content (required):

I have to download 200.000-400.000 records from a BI report, so Im planning:

1-bi report

2-download to UCM

3-download operation

4-read in segments, and for each chunk insert in DB.

My question is if i read segments in parallel, how may threads the system opens? and How to know?

Thanks.

Juan

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