Lists all sessions at the root of a blocking chain, along with all sessions blocked by them, and then sessions blocked by those, and so on.
These are displayed in a hierarchy, which can be expanded and collapsed using the + and - symbols.
|What It Shows||Comments|
|SPID||The SPID that is blocking or being blocked (or both)|
Click on a row to display more detail in the Session Detail report.< Activity | Current | Transactions Activity | Current | Waiting Tasks >