By default, during RMAN backup copy the data snaps are mounted in the same location as source on proxy MediaAgents. In case of ASM databases, the ASM Disk Groups are not renamed during RMAN backup copy. This is to facilitate incremental RMAN backup copy where the datafile paths need to be in the same path as source.
However, if you use the same proxy MediaAgent for multiple databases RMAN backup copy may fail if the file system mount points or ASM Disk Group names of different Oracle instances conflict with each other.
In such cases, edit the additional setting sRMANDATAFILECOPY to make the data snaps to be mounted on a different path or in case of ASM databases, to rename the ASM Disk Groups uniquely.
Note
RMAN incremental backups are not possible with this additional setting.
Procedure
To add or edit an additional setting, follow the steps in Add or Modify an Additional Setting.
Use these arguments:
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In the Name box, type sRMANDATAFILECOPY.
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In the Category box, type or select OracleAgent from the list.
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In the Type box, select String.
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In the Value box, type Y.