Solution : https://service.sap.com/sap/support/notes/443308 (SAP Service marketplace login required)
Key words : 
sqlgetdata [microsoft][odbc driver manager]invalid string, buffer length additional key words contentserver, /general/3rdparty/sapdb/oltp_versions/73, sap content server displays, kpro web server, sap db version 7, odbc driver, fetchcomp contentstorage, error program, storagewrapper storage
Related Notes : 
       
| 620218 | Installing SAP DB Version 7.3.00 B33 or higher (BW, CS) | 
| 530567 | Importing SAP DB Version 7.3.00 B33 or higher (OLTP) |