While accessing the DRM web client url we are getting HTTP Error 503. We found that DRM service was running fine but the drm_pool in IIS manager was in stopped state. When we start the application pool, url becomes available. But, we are getting this error sporadically and every time we have to start the drm app pool.
Just wanted to share that we have never received this error in our environment but recently we went for RAM size increase in our Test servers and the error started coming after that. We are not getting this error in other server where RAM size is not increased yet.
These are the Warnings and error found in Windows Event log for drm_pool:
Warning:
A process serving application pool 'drm_pool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '9016'. The data field contains the error number.
process serving application pool 'drm_pool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '12244'. The data field contains the error number.
Error:
Application pool 'drm_pool' is being automatically disabled due to a series of failures in the process(es) serving that application pool.
Could any one please provide the reason for this error and any IIS setting dependency on RAM size.
Thanks,
Ashish