WebSphere Application Server monitors thread activity and performs diagnostic actions if one has become inactive.
WSVR0605W: Thread threadname has been active for hangtime and may be hung. There are totalthreads threads in total in the server that may be hung.where: threadname is the name that appears in a JVM thread dump, hangtime gives an approximation of how long the thread has been active and totalthreads gives an overall assessment of the system threads.
WSVR0606W: Thread threadname was previously reported to be hung but has completed. It was active for approximately hangtime. There are totalthreads threads in total in the server that still may be hung.where threadname is the name that appears in a JVM thread dump, hangtime gives an approximation of how long the thread has been active and totalthreads gives an overall assessment of the system threads.
WSVR0607W: Too many thread hangs have been falsely reported. The hang threshold is now being set to thresholdtime.where: thresholdtime is the time (in seconds) in which a thread can be active before it is considered hung.
You can prevent WebSphere Application Server from automatically adjusting the hang time threshold. See Configuring the hang detection policy