Solution : https://service.sap.com/sap/support/notes/373294 (SAP Service marketplace login required)
Key words : 
latest admin tool patch, symptom sddb6ins terminates, terms sddb6ins reason, level patch < 6, prerequisites sddb6ins, solution install, note 410252
Related Notes : 
       
| 410252 | DB6: Installing the Latest 4.6D DB2 Admin Tools |