J2EE Server not connecting after upgrade failed

Hi experts,

We tried upgrading our EP server to SP13 from the previous SP09 patch level, using JSPM.

After deploying some packages, when it reached JEECORE package, it got failed. But JSPM did not give any error message.

It tried to restart the server. But after restart, the server is not connecting. In the MMC, all the nodes are green showing successful restart. But when I try to access the portal, it is showing an error message as given below:

503 Service Unavailable

SAP WebAS Engine is starting...

If this state does not change within a few minutes,

please contact your system administrator.

Check the recommendations in SAP Notes: 943498, 764417

Message: Dispatcher running but no server connected!

Details: No details available

I checked the trace files.

I saw the following error message

Encomi: failed to connect to sapXXX/3251/Connection refused: connect)#

Can anyone help us out?

It urgent

Points will be rewarded for sure

Thanks alot

Shobin