Oracle competes in the database realm with Microsoft (SQL Server) and IBM (DB/2). Oracle owns MySQL. PostgreSQL and MySQL are widely used but not considered enterprise-scale.
Big companies build their software around the database, so once they have committed to a database vendor they are pretty well locked in. I don’t see any newer players directly competing with Oracle, but there are always competing products aimed at specific requirements.
Besides the database server Oracle also sells enterprise software applications. So do Microsoft, IBM, HPE, etc. Salesforce (founded by a former Oracle exec) is an example of a new-ish competitor. Salesforce of course uses Oracle.
Big companies build their software around the database, so once they have committed to a database vendor they are pretty well locked in. I don’t see any newer players directly competing with Oracle, but there are always competing products aimed at specific requirements.
Besides the database server Oracle also sells enterprise software applications. So do Microsoft, IBM, HPE, etc. Salesforce (founded by a former Oracle exec) is an example of a new-ish competitor. Salesforce of course uses Oracle.