Solution : https://service.sap.com/sap/support/notes/1499097 (SAP Service marketplace login required)
Key words : 
symptom application server crashes, application server crash, creates core file, terms core file, application server, work directory, `disp+work', program terminated, segmentation fault, kernel coding
Related Notes : 
       
| 39412 | How many work processes should be configured? | 
| 9942 | Maximum number of work processes |