Solution : https://service.sap.com/sap/support/notes/1643799 (SAP Service marketplace login required)
Key words : 
-> special instant client builds             -> ora_ic_11203_dvd_sol_11, sap kernel 720_ext requires sqldbc version 7, sap maxdb server version  sap maxdb, -> installation            -> solaris oracle database             -> oracle rdbms 11, sap maxdb client version  compared, sudo pkg info entire, ibm supports db2/udb, documentation    > database upgrades     > maxdb, sufficient  maxdb client software, 819829 oracle instant client installation
Related Notes : 
       
| 1669684 | SAP on Solaris 11 | 
| 1638356 | Additional information about BR*Tools Version 7.20 EXT | 
| 1469675 | MaxDB 7.8: Inst./System Copy based on SAP Kernel 7.00/7.01 | 
| 1431793 | Oracle 11.2.0: Upgrade Scripts | 
| 822239 | FAQ: SAP MaxDB Interfaces | 
| 819829 | Oracle Instant Client Installation and Configuration on Unix | 
| 649814 | Updating MaxDB/liveCache client software | 
| 498036 | Overview note: Importing MaxDB/liveCache versions |