Скачать или смотреть Connecting to Oracle Database 18cXE with Spring Boot: A Step-By-Step Guide

Struggling to connect your `Oracle Database 18cXE` to Spring Boot? This comprehensive guide will walk you through the necessary steps to establish the connection smoothly.
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How to Connect Oracle Database 18cXE to Spring Boot

Spring Boot is a powerful tool for building Java web applications, and connecting it to a database like Oracle 18c Express Edition (XE) can seem daunting for newcomers. If you're feeling lost navigating this setup, don’t worry! In this guide, we will guide you through the process of connecting your Spring Boot application to an Oracle 18c XE database.

The Problem: Connecting Spring Boot to Oracle 18cXE

You might find yourself in a situation similar to a beginner who posted on Stack Overflow. They were trying to connect their Spring Boot application to an Oracle Database but were running into some errors. The foremost issue was related to their connection string in the application properties file.

The other day, I encountered a crucial error message while reviewing the question:

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This made us realize some fundamental mistakes in how the connection string was set up.

The Solution: Correcting Connection Issues

Here’s a breakdown of the solutions necessary to establish a connection with Oracle Database 18cXE in your Spring Boot application.

1. Correct the Typo in Your Connection String

First things first, check for typos. The error was caused by a simple misspelling of jdbc. The original string included jbdc, which is incorrect.

Change the connection string from:

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To:

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2. Understand the Database Structure

Oracle 18c XE is a container database that consists of pluggable databases. When connecting, you can no longer use the SID itself (like in 11g XE) but instead should refer to the pluggable database's service name. In this case, the service name is XEPDB1.

3. Using the Correct Service Name

Make sure you reference your pluggable database as follows:

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4. Update Your application.properties File

Your application.properties file will now look like this:

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5. Ensure Dependencies in pom.xml

Make sure your pom.xml includes the following dependencies for Oracle JDBC:

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6. Verify Your Application Code

Lastly, ensure your application code is correctly set to utilize the JdbcTemplate. Here's an example of what your entry point application code can look like:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By addressing simple yet critical aspects like connection strings and understanding Oracle's architecture, you can successfully connect your Spring Boot application to an Oracle Database 18c XE. With these steps, you should be well on your way to resolving connection issues and embarking on your Spring Boot journey. If you run into any more obstacles, don’t hesitate to ask for help—many resources are here to guide you!



Hopefully, this guide has equipped you with the knowledge needed to connect your Oracle database to Spring Boot efficiently!