Proxyusers in Oracle


we have a legacy system we need to expose.
It's all configured with database_users for security reasons (and automatic fills)

Now we need this as well in Outsystems.

we are currently looking at "DatabaseConnection_SetConnectionStringForSession"
How does this affect the connection poooling if we change the connectionstring for every session, since every session has a different user which needs to be known for the proxy-user?