You really should try Postgres. I was a professional Oracle developer for 15 years, then we had to move to Postgres since we simply couldn't afford the Oracle licensing fees anymore. It took 2 years to move our database over - mainly because we had to rewrite thousands of queries from Oracle sql syntax into standard-compliant sql syntax. Anyway, I truly expected Postgres to by worse than Oracle. I was wrong. The performance has been equal to or greater than Oracle. The documentation in Postgres is so good it almost makes me weep. I had no idea the Oracle documentation was so bad until I had something to compare it with. Installing and managing Postgres is so much easier. Backups, replication, etc. are far far easier and less error prone than Oracle. I've literally not found a single thing to complain about in Postgres. Now I wish we had moved years earlier.