Another month, and another new version of my SQL Server Diagnostic Information queries for both SQL Server 2005 and SQL Server 2008/2008 R2. I have uploaded the scripts for each version to DropBox (see the links below).

There are two new queries in this version:

-- Get total buffer usage by database for current instance
SELECT DB_NAME(database_id) AS [Database Name],
COUNT(*) * 8/1024.0 AS [Cached Size (MB)]
FROM sys.dm_os_buffer_descriptors
WHERE database_id > 4 -- system databases
AND database_id <> 32767 -- ResourceDB
GROUP BY DB_NAME(database_id)
ORDER BY [Cached Size (MB)] DESC;
-- Tells you how much memory (in the buffer pool) is being used by each database on the instance

-- Find missing index warnings for cached plans in the current database
-- Note: This query could take some time on a busy instance
SELECT TOP(25) OBJECT_NAME(objectid) AS [ObjectName],
               query_plan, cp.objtype, cp.usecounts
FROM sys.dm_exec_cached_plans AS cp
CROSS APPLY sys.dm_exec_query_plan(cp.plan_handle) AS qp
WHERE CAST(query_plan AS NVARCHAR(MAX)) LIKE N'%MissingIndex%'
AND dbid = DB_ID()
ORDER BY cp.usecounts DESC;
-- Helps you connect missing indexes to specific stored procedures
-- This can help you decide whether to add them or not

Here is the March 2011 SQL Server 2005 Diagnostic Information Query Script, and here is the March 2011 SQL Server 2008 Diagnostic Information Query Script. The second script also works on SQL Server 2008 R2.

You will need VIEW SERVER STATE permission to run many of these queries. You should read the comments and instructions for each query, and then run them one at a time (instead of running the entire batch at once). Then, you can paste the results into the matching results spreadsheet for each version of the query. These spreadsheets have labeled tabs that are in the same order as the queries.

Here is the March 2011 results spreadsheet for SQL Server 2005, and here is the March 2011 results spreadsheet for SQL Server 2008.