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by 0cf8612b2e1e 190 days ago
It is legacy decisions going back decades. Thirty years ago, you did not have a wealth of database alternatives. You picked Oracle and built the business around it. More and more business processes accumulate around the data store, all using some proprietary Oracle extensions. Eventually, the thought of disentangling the dependency is so daunting you are locked in forever until an existential risk materializes.