Not the same percentage of them. Postgres has been used for a shorter time in large companies. Many experts in Postgres were previously experts in another DBMS.
In contrast, most Oracle DBAs/Engineers publish the fact that they have only used this specific product during their whole career. They seem to be rather proud of the fact, actually.
In contrast, most Oracle DBAs/Engineers publish the fact that they have only used this specific product during their whole career. They seem to be rather proud of the fact, actually.