How to migrate from Oracle to PostgreSQL on a budget?
When on a budget, there might not be enough money to pay for a migration tool.
In this situation, there are some Open-Source alternatives.
One of these alternatives is ora2pg.
Ora2pg is a free tool used to migrate an Oracle database to a PostgreSQL compatible schema. It connects your Oracle database, scans it automatically and extracts its structure or data, then generates SQL scripts that you can load into your PostgreSQL database.
The tool itself is written in Perl and it can be installed in Linux or Windows.
For further reading about ora2pg, head to https://ora2pg.darold.net/