Tag Archives: application changes

Statistics history, revisited

Tuesday last week I did a presentation on the Planboard DBA Symposium in De Meern, the Netherlands, about SQL performance issues. The scope of my presentation was what to do when a SQL statement suddenly does not perform adequately. Often … Continue reading

Posted in Oracle performance tuning | Tagged , , , , , , | Leave a comment

Table and index statistics history

As a performance tuning DBA I regularely get questions about query performance gone bad. Often you get to hear that everyone was minding their own business and certainly did not change the application code or anything, when suddenly, from one … Continue reading

Posted in Oracle performance tuning | Tagged , , | 2 Comments