Is Oracle's Database Dominance Fading? Slow but Clear Market Shift

Recent Gartner data highlights a subtle yet unmistakable shift in the database management system (DBMS) market: Oracle, long the undisputed leader, is beginning to lose market share to cloud providers and emerging vendors.

"Among the major vendors in 2011 (Oracle, IBM, Microsoft, and SAP), only Microsoft has grown its market share over the past 15 years. The rest have been eroded by Amazon, Google Cloud, and fast‑growing newcomers such as Snowflake, Databricks, and MongoDB. There is no reason to expect this trend to reverse in the foreseeable future," said Gartner Vice President and Analyst Adam Ronthal.

Gartner’s DBMS market‑share ranking is based on revenue, so open‑source systems like PostgreSQL, MySQL, and Cassandra are evaluated only as part of commercial services rather than as standalone products.

Since 2022, the top‑five vendors by revenue have consistently been AWS, Microsoft, Oracle, Google Cloud, and IBM. The only notable change projected for 2026 is the rapid growth of Cockroach Labs, whose CockroachDB offers a PostgreSQL‑compatible front end with a distributed back end.

Ronthal further explains that the primary growth drivers for the DBMS market through 2025 will be cloud computing, data analytics, and artificial intelligence. The relatively stable upper half of the technology‑stack ranking shows that leading vendors can adapt well to AI and cloud demands, while the lower half—comprising smaller‑revenue players—experiences more volatility, where even a single large deal can shift rankings.

Unlike Gartner’s revenue‑centric view, the DB‑Engines ranking, which aggregates website mentions, Google search trends, technical discussions, and job ads, paints a different picture. Oracle remains at the top, followed by MySQL, a position it has held since around 2011. PostgreSQL benefits from its popularity as a managed service on AWS, Azure, and GCP, showing steady growth and the potential to overtake SQL Server for third place.

In the developer community, PostgreSQL became the most popular database in 2023, while Oracle fell to ninth place, though it still holds a strong position in Stack Overflow’s rankings.

Overall, Oracle’s dominance in the database market is gradually weakening. Although its influence will persist for a long time, the company’s focus is shifting toward cloud infrastructure (OCI) and AI‑related investments, and without existing partnerships, customers are more likely to choose mature open‑source cloud services.