Solution : https://service.sap.com/sap/support/notes/953851 (SAP Service marketplace login required)
Key words : 
java upgrade exits, terms netweaver upgrade, batch config tool, <jupgrade-dir>/batchconfig, -atomic batch failure, configure_iiop_service phase, error message, db2 database, configure_iiop_service reason, executes system
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 | 
| 913972 | Add. info. on upgrading to SAP NW 7.0 SR1 Java |