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SQL Server 2005 methods to find table INDEX or Statistics age for better performance
09 January 08 01:55 AM | SQL Master | 4 Comments   
Recently we have had problems on one of the database that is used on 24/7 basis where a ETL process to import and export millions of rows on few tables has been taking longer time to finish. Further the SELECT queires on reports are timed-out and smaller Read More...
Considering Parallel plans and forcing plans for better performance
23 October 07 06:55 AM | SQL Master | 2 Comments   
Parameterizing T-SQL queries are a well-known task such as database programming and best practice in some tasks. It allows query plan reuse and eliminates the need of recompilation for multiple invocations of the same query that simply has different parameter Read More...
Rebuild some fragmented indexes - problem with Extent Scan Fragmentation value
24 August 07 04:24 AM | SQL Master | 2 Comments   
This was the question from SSP forums, I’m trying to rebuild few fragmented indexes on a table that is updated on regular basis. The “dbcc showcontig” gave this result: Table: 'Confidential' (999999999); index ID: 5, database ID: 5 LEAF level scan performed. Read More...
Update statistics causing negative performance
17 August 07 06:11 PM | SQL Master | 2 Comments   
Recently we have seen a negative performance for a query that is running against a 500GB size of database, where AUTO UPDATE STATISTICS is enabled and we perform weekly reindexing on this database. In addition to this I perform intermittent update statistics Read More...
DMVs to provide state of TEMPDB during a performance tuning analysis
14 August 07 06:55 AM | SQL Master | 5 Comments   
TEMPDB - though the name sounds like temporary database, it most important for any user database! Coming to performance tuning exercise or analysis you would go through Task Manager initially to see how system's memory & processor are coping up. Though Read More...