Answer / guest

Cause: Duplex backup to recovery area is not supported.

Action: Remove duplex option and try again.

Please add more information about this Error

Answer / uday

this is because you might have set the parametes
1)configure datafile backup copies for device type disk to <int>
2)configure archivelog backup copies for device type disk to
<int>
now the solution is to clear the above two configuration
settings i,e...
A)
1)configure datafile backup copies for device type disk to
clear;
2)configure archivelog backup copies for device type disk to
clear;
now it will work ...................

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