DataGuard with LGWR ASYNC or even ARCH

I believe that there are valid reasons for the need to use LGWR ASYNC , Maximum Performance mode, instead of Maximum Availability mode even in 11g.

When there are wide fluctuations in redo volume and the bandwidth is grossly inadequate for the peak volumes, I would even consider ARCH.

What criteria would you use to qualify a DataGuard environment to run ASYNC, Maximum Performance ?

Hemant K Chitale

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