Please find details as below .Its intermittent issue .It works for most of the time .Some time we will get this error
Product webMethods Integration Server
Version 9.9.0.0
IS_9.9_Core_Fix25
IS_9.9_SPM_Fix4
Error Message: Error while executing command ‘put’: No threads available in pool
Server Thread Pool
Available Threads 83 % (332 Threads)
Maximum Threads 400
Minimum Threads 40
Available Threads Warning Threshold 15 % (60 Threads)
Scheduler Thread Throttle 75 % (300 Threads)
Scheduler Current Threads 0
#Integration-Server-and-ESB#webMethods