Hi Sithara,
Please check the below things:
1. Check if all the java processes are up and running fine without any issues from JCMON/JSMON.
2. Please check if the Debug mode is enabled for that SAP node. You can check that as below:
https://help.sap.com/saphelp_nw73/helpdata/en/4a/38f6c292a81c62e10000000a42189c/content.htm
3. If the issue is not resolved, please try to capture the HTTP trace using httpwatch tool (you can download it free and use it) to find any incorrect redirection.
4. Please attach the dev_server0, default trace here.
5. Finally, I hope you have checked Reagan's advice, take note of his point and see you are doing any missing anything there.
Let us know if it helps.
Regards,
Sujit Kumar Banerjee.