Solution : https://service.sap.com/sap/support/notes/1789225 (SAP Service marketplace login required)
Key words : 
customer component bc-db-ora oracle priority correction, medium priority category program error validity, directory generates sha-1 based password verifier, current oracle 11g based sap systems, windows 819829   oracle instant client installation, oracle security sap notes 998004   update, sha-1 based password verifiers exclusively, quick overview oracle server release 11, / __%pdfstyle%__font-size, __%pdfstyle%__ / } symptom
Related Notes : 
       
| 1868094 | Overview: Oracle Security SAP Notes | 
| 998004 | Update the Oracle Instant Client on Windows | 
| 819829 | Oracle Instant Client Installation and Configuration on Unix |