R12.1.3 : Unable to start Workflow Deferred Agent Listener after upgrade from 11.5.10

Hi ,
We recently upgraded to R12.1.3 .    After upgrade , we are not able to start Workflow Deferred Agent Listener.

SELECT c.component_name, c.component_status from fnd_svc_components c where upper (c.component_name) in ('WORKFLOW DEFERRED AGENT LISTENER',
'WORKFLOW JAVA DEFERRED AGENT LISTENER');  2

COMPONENT_NAME
--------------------------------------------------------------------------------
COMPONENT_STATUS
------------------------------
Workflow Deferred Agent Listener
DEACTIVATED_SYSTEM

Workflow Java Deferred Agent Listener
RUNNING


Status Information  This Automatic Service Component has been restarted the maximum of 10 times after stopping with error. Thus, it has been system deactivated -> oracle.apps.fnd.cp.gsc.ProcessorException: 10consecutive errors occurred
 
 
Please let me know, how to start this.