Keeping or not keeping the connection?

Hi!
I'm wondering what is better. If my program need to connect to Oracle lot of times, it's better to connect once at the begining and keep the connection to the end of program? Or maybe it's better to connect everytime when some data from database is needed?
Thanks in advance,
Jacek

That all depends on what your application wants.
If your application is online and require high performance , then keep the connections, however this will have impact on server side with unnecessary connections holding for long time.
If your application is not performance oriented then you can afford to connect whenever required.

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