The server has 12GB of memory. Only GLUU is running on this server. I believe GLUU was last restarted when we did the upgrade on 8/8/2021. GLUU was down for 8 hours before I noticed this and restarted services. When I restarted opendj it took a while to shutdown which caused me to look at those logs. I saw the errors about it running out of memory there which I posted. According to our system monitoring the server itself did not run out of memory. At that time it had 3.7 GB of free memory. There is nothing in the OS system logs about running out of memory either.