Migrating from Oracle to Postgres is much more appealing because you can avoid the high Oracle license costs. I don't really see that much benefit in convertin

Migrating from Oracle to Postgres is much more appealing because you can avoid the high Oracle license costs. I don't really see that much benefit in converting from MySQL to Postgres. While Postgres is a legit database, so is MySQL. If you're looking to scale MySQL, I recommend the book High Performance MySQL. For greenfield projects I'd be comfortable with either MySQL or Postgres.