How to figure out what object is represented by associatedObjectId during blocking?

Question

I got report from another team about blocking in SQL Server. Looking at results of

  Exec sp_who2

and query from blog by Glenn Berry

SELECT blocking.session_id AS blocking_session_id
       ,blocked.session_id AS blocked_session_id
       ,waitstats.wait_type AS blocking_resource
       ,waitstats.wait_duration_ms
       ,waitstats.resource_description
       ,blocked_cache.text AS blocked_text
       ,blocking_cache.text AS blocking_text
    FROM sys.dm_exec_connections AS blocking
    INNER JOIN sys.dm_exec_requests blocked
        ON blocking.session_id = blocked.blocking_session_id
    CROSS APPLY sys.dm_exec_sql_text(blocked.sql_handle) blocked_cache
    CROSS APPLY sys.dm_exec_sql_text(blocking.most_recent_sql_handle) blocking_cache
    INNER JOIN sys.dm_os_waiting_tasks waitstats
        ON waitstats.session_id = blocked.session_id

I want not able to catch anything being blocked. Running this multiple time I start to notice that something shows up but next time I run query, blcoking is gone.

I created temp table by SELECT INTO

       ,blocking_cache.text AS blocking_text
    INTO #TempBlockingTable
    FROM sys.dm_exec_connections AS blocking

After that modified query to be INSERT INTO SELECT. Now I was able to run query as many times as I want without fearing that results would be gone.

I kept running query for about 10 seconds until I finally got some results.

 SELECT * FROM #TempBlockingTable

Looking at resource_description column from sys.dm_os_waiting_tasks I found that data is displayed in the following format.

 <type-specific-description> id=lock<lock-hex-address> mode=<mode> associatedObjectId=<associated-obj-id> 

Microsoft documentation on sys.dm_os_waiting_tasks http://technet.microsoft.com/en-us/library/ms188743.aspx does not have definition for associatedObjectId

Answer 1

Answer actually comes from Aaron Bertrand found it on Google Groups. To Get OBJECT_NAME of associatedObjectId you need to run the following query

SELECT OBJECT_NAME([object_id])
    FROM sys.partitions
    WHERE partition_id = 456489945132196

This number 456489945132196 represents value of associatedObjectId from resource_description column from sys.dm_os_waiting_tasks