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 against set of tables that has frequently update/deletes. As usual I have checked for ...

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 they give initial picture of usage it is always better to go through by SYSMON counters, so ...