Query details about objects allocated in TEMPDB.

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TEMPDB doesn't have to be a black box. Know what objects and processes are causing it to bloat in size. This query will return details about objects currently allocated in TEMPDB. It includes: table name, create date, allocated MB, row count, and the spid, login name, application name, etc. that allocated it.

Based on feedback, this updated version uses tempdb (lowercase) to compensate for servers with case sensitivity enabled. Also I have extended it to include the stored procedure name and SQL statement (if applicable) that allocated the object.

-- Query details about objects allocated in TEMPDB. This must be run in context of SET 

SET LOCK_TIMEOUT 10000;
SET DEADLOCK_PRIORITY LOW;
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;

USE tempdb;

SELECT * FROM
(
SELECT DISTINCT
 DB_NAME() AS DatabaseName
, ps.object_id AS ObjectID
, o.type_desc AS ObjectType
, o.name AS ObjectName
, o.create_date AS ObjectCreated
, si.name AS IndexName
, CASE si.index_id 
   WHEN 0 THEN 'HEAP' 
   WHEN 1 THEN 'CLUSTERED' 
   ELSE 'NONCLUSTERED' 
   END AS IndexType
, ps.row_count AS RowsCount
, ((ps.reserved_page_count * 8024) / 1024 / 1024) AS ReservedMB
, trace.SPID
, er.start_time AS RequestStartTime
, trace.ApplicationName
, OBJECT_NAME( qt.objectid, qt.dbid ) AS ProcedureName
, SUBSTRING(CHAR(13) + SUBSTRING (qt.text,(er.statement_start_offset/2) + 1
   ,((CASE WHEN er.statement_end_offset = -1 
   THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2  
   ELSE er.statement_end_offset 
   END - er.statement_start_offset)/2) + 1)
   ,1,8000) AS StatementText
, trace.HostName
, trace.LoginName
FROM sys.dm_db_partition_stats ps 
JOIN sys.tables  AS o ON o.object_id = ps.OBJECT_ID AND o.is_ms_shipped = 0
LEFT JOIN sys.indexes si ON si.object_id = o.object_id AND si.index_id = ps.index_id
LEFT JOIN
(
SELECT HostName, LoginName, SPID, ApplicationName, DatabaseName, ObjectID
   , ROW_NUMBER() OVER (PARTITION BY ObjectID ORDER BY StartTime DESC) MostRecentObjectReference
FROM fn_trace_gettable(
   ( 
   SELECT LEFT(path, LEN(path)-CHARINDEX('\', REVERSE(path))) + '\Log.trc' 
   FROM    sys.traces 
   WHERE   is_default = 1
   ), DEFAULT) 
WHERE ObjectID IS NOT NULL
) trace
   ON trace.ObjectID = ps.object_id 
   AND trace.DatabaseName = 'tempdb'
   AND MostRecentObjectReference = 1
LEFT JOIN sys.dm_exec_requests AS er 
	ON er.session_id = trace.spid
OUTER APPLY sys.dm_exec_sql_text( er.sql_handle) AS qt 
) AS T
WHERE ReservedMB > 0
ORDER BY ReservedMB DESC;

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