Solution : https://service.sap.com/sap/support/notes/927811 (SAP Service marketplace login required)
Key words :
-called dual stack upgrade scenario, dual stack upgrade reason, j2ee server running, abap/j2ee upgrades, abap stack, abap upgrade, j2ee incompletely, java upgrade, upgrade manual, abap prepare
Related Notes :
| 826488 | Enhancements to upgrade on SAP CRM 5.0 ABAP |
| 826093 | Add. info. on upgrading to SAP SCM 5.0 ABAP |
| 826092 | Add. info. on upgrading to SAP ERP Central Component 6.0 |
| 818322 | Add. info.: Upgrade to SAP NW 2004s ABAP |