Autosys agent fails to start
Article ID: 243169
Updated On:
Products
Issue/Introduction
Autosys system agent service does not start. The startup command returns "Unable to start agent service"
# ./cybAgent -a
Agent service is starting...
Unable to start Agent service
The file nohup.stderr from the agent install location has the following message -
# cat nohup.stderr
Exception in thread "MainThread" java.lang.ExceptionInInitializerError
at java.lang.J9VMInternals.ensureError(J9VMInternals.java:148)
at java.lang.J9VMInternals.recordInitializationFailure(J9VMInternals.java:137)
at java.lang.J9VMInternals.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1852)
at org.bouncycastle.jce.provider.BouncyCastleProvider.loadAlgorithms(Unknown Source)
at org.bouncycastle.jce.provider.BouncyCastleProvider.setup(Unknown Source)
at org.bouncycastle.jce.provider.BouncyCastleProvider.access$000(Unknown Source)
at org.bouncycastle.jce.provider.BouncyCastleProvider$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(AccessController.java:678)
at org.bouncycastle.jce.provider.BouncyCastleProvider.<init>(Unknown Source)
at java.lang.J9VMInternals.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1852)
at cybermation.library.security.z.b(Unknown Source)
at cybermation.library.security.k.a(Unknown Source)
at cybermation.library.security.k.<init>(Unknown Source)
at cybermation.library.security.k.<init>(Unknown Source)
at cybermation.library.security.k$a.<clinit>(Unknown Source)
at cybermation.library.security.k.a(Unknown Source)
at cybermation.library.security.k.a(Unknown Source)
at cybermation.agent.CybAgentDriver.runApplication(Unknown Source)
at cybermation.agent.CybAgentDriver.main(Unknown Source)
Caused by: java.lang.NullPointerException
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:336)
at java.lang.ClassLoader.loadClass(ClassLoader.java:881)
at org.bouncycastle.jcajce.provider.digest.Blake2b$Mappings.<clinit>(Unknown Source)
... 19 more
Environment
Release : 12.0 and higher
Component : Workload Automation System Agent
Cause
This exception is due to the JVM does not have enough heap memory to load all the required java libraries into the process
Resolution
The default heap size for java is determined based on the available physical memory on the server. And it varies from server to server as the available memory. This problem only appears if the server's available memory is less and, the JVM considers even lesser as a max limit. That might not be enough to load all the required libraries for the applications to function appropriately.
Increase the JVM heap limit for the system agent. For example:
- Update the following agent parameter in the agent configuration file (agentparm.txt)
- oscomponent.jvm.x.options=-Xmx2048m
- Restart the agent
This increases the maximum heap size to 2048m (2GB).
Additional Information
Out of Heap exception in autosys system agents - Troubleshooting Agent Memory Issues
Default max heap size for Java 8: https://blog.openj9.org/2020/04/30/default-java-maximum-heap-size-is-changed-for-java-8/
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