In this post, you’ll learn more about the Oracle ErrorRMAN-00556: could not open CMDFILE “string” with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
RMAN-00556: could not open CMDFILE “string”
Reason for the Error RMAN-00556: could not open CMDFILE “string”
An error occurred when trying to open the file.
How to fix the Error RMAN-00556: could not open CMDFILE “string” ?
You can fix this error in Oracle by following the below steps
Check that the file name was specified correctly and that the file exists and that the user running RMAN has read permission for the file.