Hi Praveen,
Not clear with your issues. like you are mentioning port number 4901, but we have never heard such type of port.
Can you elaborate like below:
1. Database version.
2. SAP instance version
3. Instance numbers
4. Log file of R3trans -d of failed instance.
Additional log you feel will give some highlight on the issue.
Regards,
Anil Bhandary
