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About warning message on java agent log (DT6.5)

ksk_natsume
Inactive

Hi,This is Ryotaro

I want to ask about Agent log file.

I got the error message as follow

◼︎[native]Capability can _redefine_classes not available. Hot Sensor placement is not abailable in this virtual machine.

◼︎[native]Capability can _redefine_any_class not available. There may be problems with Hot Sensor placement.

◼︎[java]Retrieving starts array for module : 'beanModule' returned null. This may be caused by a not yet initialized module. If subscriptiones for this module do not provide data after initialization, please check module path.

◼︎[java]...last message reported 2 times...

Q.

please tell me about why these logs are shown.

Can I cange the Capability can _redefine_classes?

About java's error, if I can see this message after initialization, how can I resolve the message?

Best regards

Ryotaro natsume

3 REPLIES 3

kristof_renders
Dynatrace Pro
Dynatrace Pro

Hi Ryotaro,

Most likely this message occurred because your JVM does not support Hot Sensor Placement.
This means that you will have to restart the application server in order to modify the byte code injection. Other than that this message can be ignored.

KR,
Kristof

harald_berger
Dynatrace Pro
Dynatrace Pro

Hi,

This messages are typical for IBM WebSphere Application Server using an IBM JVM. These are just warnings and can safely be ignored.

Best

Harry

ksk_natsume
Inactive

Hi, kristof and harry.

thank you for your answers.

ok, we are using IBM WebSphere.

so, I'll ignore these 4 warning logs.

thank you!

Best regards,

Ryotaro