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data files are offline / tablespace offline

ski123Jun 17 2009 — edited Jun 17 2009

I am confused on the concept of data file offline.

What happened when you take data file offline?

Is data file offline because of disk damage? we see the error that data file is haning a problem, we have manually to take data file offline? how?

Why is tablespace offline but data file is still online?

Please help!
Thanks

S.

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Locked on Jul 15 2009

Added on Jun 17 2009

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