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 www.bobbydurrettdba.com
Denormalize tables to improve cardinality estimate | Bobby Durrett's DBA Blog
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Blog - Page 2 - Striving for Optimal Performance
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A Data Model Fix for Suboptimal Semi-Join and Anti-Join Cardinality Estimates - All-round Database Topics
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| | Analysis of dataset properties leading to a bad performance problem with a simple fix.
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How to determine which view is the right view to use in Oracle?
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| | Database views are a handy tool to help obfuscate complex joins from developers and analysts. However, knowing which view to use can be tricky, especially when faced with multiple views with simila...
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dbms_xplan in 10g | Oracle Scratchpad
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| [More on dbms_xplan.display_cursor()] If you're using 9i and haven't learned about the dbms_xplan package, then you should take a good look atit right away. It's(usually) a much better wayof getting execution plans from your system thanwriting yourown queries against the plan_table. If you'vebeen using dbms_xplan, and upgraded from 9i to 10g, make sure that you...