Solution : https://service.sap.com/sap/support/notes/111876 (SAP Service marketplace login required)
Key words : 
database software car -xvf <mount-point>/unix/<plattform>_64/inf_be, dbhostc11shm0 onipcshm  dbhost  sapinfc11  dbhostc11shm  onsoctcp  dbhost  sapinfc11a                     reliant unix, dbhostc11shm0 onipcshm  dbhost  sapinfc11  dbhostc11shm  ontlitcp  dbhost  sapinfc11a 8, actual informix directory # setenv informixdir `pwd`                        # start unpacking, informix directory cd /informix/<sid>                        # set variable $informixdir, dbhostc11shm onipcshm dbhost sapinfc11                        copy, dbhostc11shm0  onipcshm  dbhost  sapinfc11                        add, component xx-ser-swfl-ship, user root su - root                        # start, ss  'sysmaster' database built successfully
Related Notes : 
       
| 407543 | AIX: Shared Memory Management with Informix | 
| 200045 | Informix 32-Bit to 64-Bit Migration fails | 
| 198589 | Additions Upgrade to 4.6C INFORMIX | 
| 198378 | Informix error inf-597 e.g. in ST04 | 
| 179675 | Additions upgrade to 4.6B INFORMIX | 
| 146528 | Configuration of R/3 on hosts with much RAM | 
| 146289 | Parameter Recommendations for 64-Bit SAP Kernel | 
| 143039 | INST: 4.5B R/3 Inst. on UNIX - Informix Database | 
| 115824 | Informix Server Versions | 
| 84060 | ST04: current Informix version monitor | 
| 76862 | Shared Memory limits of operating systems |