Solution : https://service.sap.com/sap/support/notes/994942 (SAP Service marketplace login required)
Key words :
NetWeaver Upgrade; SAPJup; UPGRADE; COPY_BINARIES; couldn't unlink; file busy
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 |