Solution : https://service.sap.com/sap/support/notes/192822 (SAP Service marketplace login required)
Key words : 
supportedr/3              oracle        os32bit            32bit        32bit/64bit32bit            32bit/64bit  64bit32bit/64bit      64bit         64bit 64bit            64bit        32bit, cd /usr/sap/<sid>/sys/exe/rundisp+work -versionr3trans -versionetc, cd /usr/sap/<sid>/sys/exe/runfile dboraslib, 0] checking '/usr/sap/pr1/sys/exe/run/libclntsh, load library    '/usr/sap/put/exe/dboraslib, 0] checking '/usr/sap/put/exe/libclntsh, shl_load    /usr/sap/put/exe/dboraslib, like149bf58 a3ec /usr/lib/drivers/syscalls64, terms 32-bit64-bit64-bit modeosoracler/3 reason, extended memory heap memory programm buffer
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| 191801 | AIX 64-bit with very large amount of Extended Memory | 
| 180430 | Installing the ORACLE client software for UNIX | 
| 172747 | SAP on HP-UX: OS kernel parameter recommendations | 
| 156548 | Released operating systems for SAP kernel 4.6x ORACLE | 
| 153641 | Swap space requirement for R/3 64-bit kernel | 
| 85838 | Released operating systems for SAP Kernel 4.0x/4.5x ORACLE | 
| 23875 | Released operating systems for R/3 3.0x/3.1x ORACLE |