adpatch Fails After Restart With Error: “Unable to read file format id from file adainit.rf9”

Error:

adpatch Fails After Restart With Error: “Unable to read file format id from file adainit.rf9”

Solution:

cd <$APPL_TOP>/admin/AXMD/restart/

Rename the file adainit.rf9

mv adainit.rf9 adainit.rf9.org