Number of blocked descendants: Unknown

kevriley

What are the causes when I get a Blocking Process alert, but the Number of blocked descendants shows 'Unknown'.
There is a value against Total blocking duration for all descendants, but there are no blocked processes shown on the Processes tab.


SQL Monitor 7.0.11.7623

Alex B

Hi Kev,

This appears to be the case when the blocking is for parallel threads within the same process rather than external processes. I've reported this to the developers as SRP-11256 to see if we can get a better message shown.

Kind regards,
Alex