Solution : https://service.sap.com/sap/support/notes/1553804 (SAP Service marketplace login required)
Key words : 
'yyyy-mm-dd'                     'yyyy-m-dd'                     'yyyy-mm-d'                     'yyyy-m-d', documented jdbc date escape format 'yyyy-mm-dd', format 'yyyy-mm-dd', symptom sap jvm 6, solution sap jvm 6, sap jvm build 6, sap jvm patch, existing application programs, tolerant default behavior, 1 patch collection 17 relates
Related Notes : 
       
| 1434916 | How to find out the SAP JVM build version | 
| 1367498 | SAP JVM installation prerequisites | 
| 1249462 | How to import an SAP JVM patch into an SAP BC | 
| 1133020 | How to import a SAP JVM patch into an AS Java |