Solution : https://service.sap.com/sap/support/notes/1496543 (SAP Service marketplace login required)
Key words : 
java class library anymore, symptom sap jvm 6, solution sap jvm 6, removed globalsignrootca certificate, sun bug id 6274920, sap jvm patch, 1 patch collection 12 relates, 1 patch collection 12, cacerts file, logging package
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