Exception AttributeError: "'NoneType' object has no attribute 'cast'" reported when instrumenting Pyhon app that uses cx_Oracle

[hanafury]

ISSUE: Process appears instrumented in Dynatrace (OA module is presented) but no trace / custom service is generated. Using AUTODYNATRACE_LOG_LEVEL=INFO at the end of the execution we can see in the CMD:

Exception AttributeError: "'NoneType' object has no attribute 'cast'" in <bound method SDKDllInterface.__del__ of <oneagent._impl.native.sdkctypesiface.SDKDllInterface object at 0x000000000391E448>> ignored

We have confirmed that OA SDK is loaded with: python -c "import oneagent; print(oneagent.initialize())"

And we have added the following lines into the relevant .py scripts: import oneagent import autodynatrace

But after starting the process, no trace is generated. In Dynatrace we can confirm the OA is loaded:

COMPONENTS:

• OneAgent Full Stack version: 1.261.201.20230315-145944
• OneAgent SDK used: 1.4
• Python 2.7 with cx_Oracle module inside (version to be confirmed)
• Windows Server 2019 Standard 1809, ver. 10.0.17763

Thanks in advance!

[dlopes7]

Autodynatrace doesn't support python 2