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Connecting Spring Boot With MySQL and Oracle Databases

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Connecting Spring Boot With MySQL and Oracle Databases

In this post, we will go walk through, step-by-step, how to integrate a Spring Boot application MySQL and Oracle databases.

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This guide will help you understand how to connect Spring Boot with databases like MySQL and Oracle.

You Will Learn

  • How to connect a Spring Boot, JPA application with MySQL and Oracle.
  • What should you configure in application.properties.
  • How to set up the database schema.

Updating the Spring Boot Project Step by Step

Let's look at the 5 steps involved in connecting a Spring Boot application to a database.

You can use the example we created earlier for connecting to H2 in a memory database as the starting point for this article.

Step 1 - Add a Dependency for Your Database Connector to pom.xml

An example for a MySQL database is shown below.


If you would want to connect to an Oracle database, you can use a dependency similar to the one shown below.


Step 2 - Remove H2 Dependency From pom.xml

Or at least make its scope as test


Step 3 - Setup Your MySQL Database

We would need to set up a database with a schema and the tables.

For an example, check out my GitHub repo.

Step 4 - Configure Your Connection to Your Database

Configure application.properties to connect to your database.

An example for a MySQL database is shown below:



Spring Boot chooses a default value for this based on whether you are connecting to an embedded database or not.

  • Embedded Databases - default create-drop
  • Other Databases - default none

Here is a quick guide to all the options

  • none: No action will be performed.
  • create-only: Database creation will be generated from entities.
  • drop: Database dropping will be generated from entities.
  • create: Database dropping will be generated followed by database creation.
  • validate: Validate entities with the database schema.
  • update: Update the database schema based on the entities.

Step 5 - Restart and You Are Ready!

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spring boot ,integration ,database integration

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