NetOps Data Collector (DC) is going down frequently due to memory issues

Products

• CA Performance Management - Usage and Administration

Issue/Introduction

OpenJDK 64-Bit Server VM warning: Ignoring option UnsyncloadClass; support was removed in 11.0
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
2023-02-22 22:40:50,841 - Passed abnormal-service-list-detector checking. 42 services of org.springframework.context.ApplicationContext found
java.lang.OutOfMemoryError: Java heap space
Dumping heap to java_pid6076.hprof ...
Heap dump file created [12840091251 bytes in 68.972 secs]
#
# java.lang.OutOfMemoryError: Java heap space

 

Environment

Release : 22.2

Resolution

Check the directory  IMDataCollector/broker/apache-activemq*/data/kahadb

If there are more than 7 files in there, delete them all.

Then -> 

1. Stop dcmd

2. Stop ActiveMQ

3. Check the directory  IMDataCollector/broker/apache-activemq*/data/kahadb

Remove any files in this directory, again.

3. Start ActiveMQ

4. Perform a 'netstat -a | grep 616 | grep EST'

You should see 61616, 61618, 61620 and 61622 ports get established.

5. Once established, start dcmd back up.