Not sure if this post is in the right place, but would like to ask what would be the best way to authenticate with our EXADATA in a microservice design.
E.g. To ensure that the authenticated Windows user credentials can be pass all the way from front layer to the database layer in a multiple containers design.
If Kerberos can't be used due to some constraints, what would be another good way to authenticate with Oracle database?
Kerberos certainly is possible and here's a good high level article discussing it:
You could go the enterprise security route EUS, which may be more suitable for what you might be looking for re "end to end".
EUS is part of the Advanced Security option of the database and as of now requires extra licensing where as kerberos does not.