Java OutOfMemoryError: Compressed Class Space: Solutions and Troubleshooting

This error occurs when the JVM is unable to allocate sufficient memory for the compressed class space, a section of the JVM responsible for storing class metadata in a compact format.

To address this error, consider the following solutions:

1. Increase JVM Memory: Utilize the '-Xmx' flag to enhance the memory allocated to the JVM. For instance, execute the following command to provide 2GB of memory:

java -Xmx2g <main class>

2. Reduce Class Loading: Minimize the number of classes loaded by the JVM. Eliminate unnecessary dependencies or employ a tool like JDepend to analyze your code and identify potential issues.

3. Disable Class Compression: Append the following flag to the JVM arguments to deactivate class compression:

-XX:-UseCompressedClassPointers

Bear in mind that this may result in increased memory consumption, but it can be effective in resolving the problem in certain situations.

4. Upgrade JVM Version: Consider upgrading to a more recent JVM release that offers enhanced memory management capabilities.

If these solutions fail to resolve the issue, further investigation is necessary to determine the root cause and discover a more specific solution.