Clarity Java OutOfMemoryError: Metaspace in app-system or bg-system.log

Products

• Clarity PPM SaaS
• Clarity PPM On Premise

Issue/Introduction

• Alert showed java.lang.OutOfMemoryError in the app-system.log file or app-ca.log file
• Or the app service has gone down with OOM
• This may affect app or bg service and may generate a heap dump if it's set up

Upon checking the heap dump we could see low memory usage and nothing out of ordinary. This is not a heap space issue but metaspace issue.

Error from the log:
2019/02/21 08:23:23.414 | java.lang.OutOfMemoryError: Metaspace

Resolution

Troubleshooting:

• Check for anything done on this server during this time (another process that could take all the available RAM).
• Check the current value for Metaspace in the properties.xml in jvmParameters for the affected service. This value may have to be increased

Resolution

1. Please update the JVM parameters for the affected service.  Example for app service:
   From -XX:MaxMetaspaceSize=300m 
   to
   -XX:MaxMetaspaceSize=512m 
2. Save and restart the services. 
3. Repeat for all the servers in cluster