Ora2Pg is a free tool used to migrate an Oracle database to a PostgreSQL compatible schema. It connects your Oracle database, scan it automatically and extracts its structure or data, it then generates SQL scripts that you can load into PostgreSQL.
13:26:37 psql:schema/tables/CONSTRAINTS_table.sql:461: ERROR: syntax error at or near "USER"
13:26:37 LINE 1: ALTER TABLE [...] ALTER COLUMN USER SET NO...
13:26:37 ^
13:26:37 ERROR: can not import constraints.
https://github.com/darold/ora2pg/blob/190db1322877303051144411239e1ccb13c35379/lib/Ora2Pg.pm#L11034
We receive the following error: