Meta Space Error in AEM instaces

[akhilraj]

Hi All,

Sometimes, we are getting below error, especially in Author instances:

Caused by: java.lang.OutOfMemoryError: Metaspace
04.04.2024 02:15:56.627 *ERROR* [FelixDispatchQueue] org.apache.sling.servlets.resolver FrameworkEvent ERROR (org.osgi.framework.ServiceException: Service factory exception: Metaspace)
org.osgi.framework.ServiceException: Service factory exception: Metaspace

Any idea, how we can resolve these issues?

[sravs]

Hi @akhilraj ,

Please refer this https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/out-of-memory-metaspace/m-...

[arunpatidar · Accepted solution]

The "java.lang.OutOfMemoryError: Metaspace" error in Adobe Experience Manager (AEM) indicates that the JVM's Metaspace memory has been exhausted. Metaspace is a part of the Java Virtual Machine (JVM) that is responsible for storing metadata about classes and methods.

To fix this error in AEM, you can try the following steps:

1. Increase Metaspace Size:

   • Increase the Metaspace size by adjusting the JVM memory settings in the AEM startup script (e.g., setenv or start.bat).
   • Increase the Metaspace size by adding the following JVM options:
     -XX:MaxMetaspaceSize=<size>

   Replace <size> with an appropriate value, such as 256m or 512m, depending on your system's available memory and requirements.

2. Review and Optimize Code:

   • Review your AEM application code and identify any memory-intensive operations or memory leaks.
   • Optimize your code to reduce memory usage, such as by closing resources properly and avoiding unnecessary object creation.

3. Increase Overall JVM Memory:

   • If increasing Metaspace size alone does not resolve the issue, consider increasing the overall JVM memory (Heap and Metaspace).
   • Adjust the JVM options for Heap memory using -Xmx and -Xms parameters.

4. Check for Memory Leaks:

   • Use profiling tools or memory analyzers to identify and address any memory leaks in your AEM application.

5. Review AEM Configuration:

   • Review the AEM configuration and ensure that it is optimized for performance and memory usage.
   • Check for any misconfigurations or excessive memory usage in AEM components or services.

6. Monitor and Tune:

   • Monitor the AEM instance regularly for memory usage and performance metrics.
   • Tune the JVM memory settings as needed based on monitoring data and performance testing.