In this post, you’ll learn more about the Oracle ErrorDRG-50603: unrecognized operation code string with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
DRG-50603: unrecognized operation code string
Reason for the Error DRG-50603: unrecognized operation code string
Cause: Bad operation code was encountered (reached switch default:)
How to fix the Error DRG-50603: unrecognized operation code string ?
You can fix this error in Oracle by following the below steps
Action: check .h files versions