Solution : https://service.sap.com/sap/support/notes/115619 (SAP Service marketplace login required)
Key words : 
tc1     -      31i_com 32bit  31i_com 64bit  40b_com 32bit    40b_com 64bit----+----------------------------------------------------------------hpx, tc1       -              -                -      31i_ext 32bit  31i_ext 64bit  40b_ext 32bit    40b_ext 64bit-----+---------------------------------------------------------------hpx, 31i 32bit    31i 64bit    40b 32bit    40b 64bit-----+-------------------------------------------------hpx, 45b 32bit   45b 64bit    46b 32bit    46b 64bit-----+---------------------------------------------------hpx, 46c 32bit   46c 64bit    46d 32bit    46d 64bit-----+---------------------------------------------------hpx, 46d_ex2 32bit  46d_ex2 64bit-------------+-------------------------------hp-ux 11, 640_ex2 32bit  640_ex2 64bit-------------+-------------------------------hp-ux 11, tc2x4      -      45b_ext 32bit  45b_ext 64bit-----+---------------------------------------------------------------hpx, tc2x4     -      46d_ext 32bit    46d_ext 64bit-----+---------------------------------------------------------------hpx, start->programs->informix-connect->uninstall
Related Notes : 
       
| 449159 | Importing new INFORMIX CONNECT software | 
| 380468 | Incorrect data selection f. fragm.tables and PDQ | 
| 379231 | Informix client versions | 
| 368859 | Open SQL queries with PDQ occupy resources for too long | 
| 210363 | NT+INF: WP dump immediately after instnc start | 
| 198589 | Additions Upgrade to 4.6C INFORMIX | 
| 161302 | ON-Bar: Backup and restore as user != informix |