Solution : https://service.sap.com/sap/support/notes/994942 (SAP Service marketplace login required)
Key words :
<sapsid-directory>/sys/exe/run/sapstart, central instance sapstart process, trailing sapstart process, terms netweaver upgrade, file busy reason, sap<sid> processes, copy_binaries phase fails, tmp directory, sap note 799755, latest copy_
Related Notes :
981804 | Add. info. on upgrading to SAP SRM LAC 6.0 |
970039 | Add. info. on upgrading to SAP NW 7.0 SR2 Java |
799755 | J2EE Engine doesn't complete its shutdown |