I want migration from Oracle 12 to postgres 12. If anyone have documen

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.

 

Ora2Pg can be used for anything from reverse engineering Oracle database to huge enterprise database migration or simply replicating some Oracle data into a PostgreSQL database. It is really easy to use and doesn't require any Oracle database knowledge other than providing the parameters needed to connect to the Oracle database.