Solution : https://service.sap.com/sap/support/notes/149553 (SAP Service marketplace login required)
Key words : 
additional key words sql packages, symptom command dltr3pgk terminates, error message mch2804, -mentioned error message, 'r3<sid>x000', 'r3<sid>x0000', r3<sid>x0001, sql packages, /3 sql packages, delete sqlpkg
Related Notes : 
       
| 93503 | AS/400: SQL packages | 
| 63037 | AS/400: Deleting SQL Packages |