Batch processes keep in "zombie" status in Jdedwards EnterprieseOne

Many processes finalize in zombie status. When this event happens, we receive an email as follows:Subject: Server Manager Monitor Notification:   Zombie Kernel or Batch Process
Information:

The below mentioned examples are the notification mail that we are getting from jdemonitor.

Example 1:

You are receiving this message because a monitored event has occurred.  Details of the event are shown below.

Monitor: JDE_PD900_BAM
Event Type:  Zombie Kernel or Batch Process Event Time: 10/17/12 6:01 AM Managed Instance: prod_enterprise Additional Information:
Enterprise Server Process Detail
=====================================
         OS Status: 2 (ZOMBIE)
         E1 Status: 3 (ZOMBIE)
     AS/400 Job Id: 0
        Process Id: 49048748
           User Id: 40034
          Group Id: 40034
      Process Type: 0 [Kernel Process]