Thank you for your reply.
Yes, i will need to jdbc adapter. And i noticed(ofcourse i may be wrong) that we must have PI 7.4 with at least SP 10. Even if it supplies a rest adapter, It seems that complex. Regarding searching documents on scn about rest adapter with oauth call I can not still understand how can i achieve to authentication with p12 file for service-to-service process in native pi env. Additionally, i ve read blog on scn about this subject. But i am not enlighted. Because it doest involve my scenario.
Google advise to use service account such as that process without human interaction. see also
So, i think that developing a custom adapter with ejb become easier than basis upgrade and trusting native rest adapter's capabilities about oauth2.0.
Your ideas are welcome..
Thank you
Regards