BUG #16535: Implementing Autonomous Transactions in Postgresql

The following bug has been logged on the website:

Bug reference:      16535
Logged by:          Isha Sonal
Email address:      ishasonal1841@yahoo.com
PostgreSQL version: 11.0
Operating system:   unix
Description:

I am trying to enable logging / auditing / progress tracking feature even if
my all transactions are rollbacked back. I tried to handle it with
procedures but its not working. Please suggest how can i achieve this
feature in PostgreSQL 11.

I am currently working on Oracle DB and using Autonomous Transactions to
enable logging feature.