How to create or reusing in python a token based DRCP connection to an Orcale database saving that Token in a Django Model inside postgres

I am trying to figure out how it is possible to use a tokenbased (not username and password) authorization method to create or reuse DRCP connections from one djangobased Python WSGI Webapplication to a remote Oracle database. The token for connecting to that Oracle DB should be stored inside a local postgresql database where all django models of that Web-Application is stored.

I was able to create a "Hello World" Python programm connecting to the Oracle database using user name and password.

Lets have a look to a picture

I found some nice information here:

• https://oracle.github.io/python-cx_Oracle/samples/tutorial/Python-and-Oracle-Database-Scripting-for-the-Future.html#pooling
• Persistent DB Connection in Django/WSGI application
• Django multiple dynamic databases after server startup
• Interprocess communication in Python
• https://community.oracle.com/thread/3583799
• https://blogs.oracle.com/opal/python-cxoracle-and-oracle-11g-drcp-connection-pooling
• Create Django token-based Authentication
• Token Based Authentication in Django

But the missing link is missing. How to create and use that token for allowing that webapplication from that server to connect to Oracle DB and to some work, without telling the webapplication admin any Oracle DB accounts or asking the current Webapplication for oracle account name and password?

Edit (2020-12-10): perhaps "linked server" is the right way, to do it ?

• https://www.sqlshack.com/link-sql-server-oracle-database/
• https://peter-whyte.com/creating-a-linked-server-with-a-postgres-database/