For those still on Oracle, why? Is it regulations or executives demanding certified solutions? And if so then with so many bugs at what point does certification become a negative signal?
Query hints are one reason. I'm not a fan of Oracle as a company, but for certain usage patterns you need query hints and Postgres doesn't support them.
Disclosure: I implemented the Optimizer Query Hints feature at EnterpriseDB.
[1]: https://www.enterprisedb.com/edb-docs/d/edb-postgres-advance...