topic Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError in Splunk AppDynamics

Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError"

CommunityUser — Mon, 12 Jun 2017 15:12:30 GMT

Hi, I'm running Appdynamics since a while on a Tomcat server (very basic setup) and I'm seing a lot of thos Exceptions: "Agent Internal: com.singularity.ReflectionError" - around 400/min.

I searched the community site as well as on Google but I found anything, and I'm worried that this could in some way impact the services running on Tomcat.

Does someone has a clue about what's causing those exceptions?

Thanks, Davide

Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError

CommunityUser — Mon, 12 Jun 2017 16:09:20 GMT

Hi Davide,

I did a search, too, and found this community post: https://community.appdynamics.com/t5/Archive/Agent-Internal-Reflection-Errors-thousands-of-errors-every-day/td-p/22119

One recommendation is to "try enabling verbose logging to see if you get the stack trace for this error." Give that a go, first, and I'll keep looking.

Thanks,

Cody

Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError

CommunityUser — Wed, 30 Aug 2017 14:22:58 GMT

I'm seeing about 3000 occurances of this exception every minute across my java applications. This essentially makes all of the exception metrics useless.

How do I ignore this permanently ignore this exception in the agent?

Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError

Peter_Holditch — Wed, 30 Aug 2017 14:30:55 GMT

Note the underlying issue here is fixed in ~~v4.2.4 and v4.3~~ v4.3.8.7 and v4.4+ of the agent. Can I ask what version you are running?

Also, in v4.3.4+ internal agent errors are no longer counted against the application totals.

Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError

CommunityUser — Wed, 30 Aug 2017 14:50:54 GMT

I am running version 4.2.15.4-1 of the agent, so this should be corrected. Glad to know these exceptions no longer impact the application in 4.3!

Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError

Sundarapandian_ — Tue, 20 Mar 2018 08:20:25 GMT

Hi,

We are using agent version 4.3.2.2 and we still see this agent exception (see attached). How do we ignore these exceptions? Please advise

Thanks!

Sundar

Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError

Peter_Holditch — Tue, 20 Mar 2018 09:39:30 GMT

Can you please post a full set of agent logs, either here or in a support case.

Warm regards,

Peter

Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError

Sundarapandian_ — Tue, 20 Mar 2018 16:39:27 GMT

Support case - https://help.appdynamics.com/hc/en-us/requests/128406

Thanks!

Re: Java agent on Tomcat is reporting a lot of "Agent Internal: com.singularity.ReflectionError

Sundarapandian_ — Thu, 22 Mar 2018 08:58:36 GMT

Can you please confirm if this issue has been fixed in 4.3.2.2 agent version or how to ignore this exception?

I already provided the logs that were asked.

Thanks!