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APM performance due to webservice calls - 500 Response for SOAP web service calls under high concurrent load due to a ConcurrentModificationException


Article ID: 186379


Updated On:


CA Application Performance Management Agent (APM / Wily / Introscope) CA Application Performance Management (APM / Wily / Introscope) INTROSCOPE DX Application Performance Management


We are heavily utilizing the SOAP metric data web service ( to fetch metric data from APM (using the operation “getMetricData”) using grafana which is integrated with APM. 

Sometimes the Enterprise Manager returns an error response with HTTP error code 500. In these cases the response always contains the following response body:

<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="" xmlns:xsd=""
                <ns1:hostname xmlns:ns1="">f22cb603e4a8</ns1:hostname>


This is a known issue with the Axis version bundled with the Introscope Enteprise Manager:

DE449168 - 20320127-HTTP 500 error codes from metrics data webservice (Axis 1.4.1120-1)


Introscope Enterprise Manager 10.7.x


Fixed in 10.7 HF#61

APM 10.7 Hotfixes