Not able to connect using Webstart Workstation.

Document ID : KB000029061
Last Modified Date : 14/02/2018
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Webstart Workstation fails with the error message:

"Type=socket of user AuthenticatedUser[user] was rejected since the clamp value of 10 has been reached"


Workstation resource consumption on the Enterprise Manager:

Workstation connections to an Enterprise Manager are not resource-intensive.  There is no practical, software-based limit to the number of Workstations that an Enterprise Manager can handle.


Workstation session resource consumption depends on the tasks that the Workstation users are doing. For instance, many users can view live metrics

 concurrently with little resource consumption.


However, many users triggering frequent Transaction Traces on large transactions, or requesting thread dumps, can consume a large amount of memory on the Enterprise Manager.



 A clamp on the number of concurrent Workstation connections is defined in the apm-events-thresholds-config.xml file.

This clamp is the introscope.workstation.max.users property. The default value is 40, which is a conservative value. Based on the configuration on Enterprise Manager resource availability and expected Workstation user behavior, this value can be increased.


 User activity through Workstation clients consumes the following Enterprise Manager resources, from most to least important:


 1. Heap memory

 2. Network bandwidth

 3. Disk storage and I/O

 4. CPU