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This product reached the end of support date on March 31, 2021.

about java agent (DT6.5)

ksk_natsume
Inactive

Hi,

I want to know about connection of the Java Agent on DT6.5.

When I collector shutdown and restart,

I got the error messages "no connection to instrumentation channel, continuing without instrumentation" ...

If i have the connection of the Java Agent with the message "no connection to instrumentation channel, continuing without instrumentation" , Could I instrumentation the Agent without reboot the agent?

The JVM cannot restart easily.

Best Regards,

Ryotaro

3 REPLIES 3

Joe_Hoffman
Dynatrace Leader
Dynatrace Leader

Ryotaro, That message means that the agent did not have a connection to the Collector when the JVM started. That connection must exist at JVM startup time to perform instrumentation. Instrumentation can only happen at startup. So in order to instrument your JVM, you will need to restart the JVM.

joe

ksk_natsume
Inactive

Hi, Joseph

Thank you for your quick reply!

I got it that I need to restart the JVM though.

Our environment have 84 JVMs, and only 3 agents got the error when we restart collector.
the all of JVMs processes had continued to run, during the stop collector.

when is the instrumentation will be Invalid?

Best Regards,

Ryotaro

sooryaprabha_mo
Inactive

During the restart network latency issue may exists between 3 agents(JVM) and collector cause this instrumentation issue. Probably one more restart of JVM solves this issue.

BR

Soorya Mohan