Prerequisites and steps to connect to oracle data base from uipath database connect activity

I am able to connect to my client installed oracle data base from sql developer using host name ,port connection credentials etc.
I dont have anything called client/DNS setup installed in my system .
Could anyone let me know easiest way to connect to oracle data base.
I see some packages available named ‘Oracle Client’ in uipath , is that necessary and how does it works

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