Process Troubleshooting 
You can view the status of the deployed development components and trace the problems related to component availability using the Process Troubleshooting application, which is part of SAP NetWeaver Administrator Problem Management.
Procedure
Log on to the NetWeaver Administrator (NWA) application.
Select
Problem Management
Processes and Tasks Process Troubleshooting
.The system displays the cluster nodes and their availability status. Green traffic light indicates that the components are available while red traffic light indicates that component(s) are missing.
In case of a red traffic light for a node, you can view the missing components in the Missing Components of the Node: <node name> section.
If the missing component is a sub system, from the Related Links, select Start & Stop Services and start the appropriate service.
If the missing component is an adapter, from the Related Links, select Start & Stop Applications and start the appropriate adapter application.
To view the trace of the process server actions, choose the Process Server Log tab page.