1. Login to the FMS
2. Navigate to (FMS dir)\server\tomcat\
3. Edit server.xml
4. Change the maxThreads="250" to maxThreads="1000" inside the Executor tag
5. Add the maxThreads="500" into the two Connector tags. See attached screenshot for details.
NOTE: The value for maxThreads under the two Connector tags above depends on the number of FglAMs reporting to the FMS. For example, if there are 800 FglAMs connecting to FMS via HTTP protocol, then a value of 900 or higher should be supplied. The same applies if the FglAMs use the HTTPS protocol to connect to the FMS.
6. Save the file and restart the FMS
STATUS: FGL-19384 has been fixed in the 5.9.1 and higher FMS versions.