SQL Tuning Tools of the Trade

Carlos Sierra

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Carlos Sierra• SQLTXPLAIN + SQL Health-Check SQLHC +• Consultant/Developer/DBA/Design/+• Oracle Performance + SQL Tuning• Oracle Database Health-Check• Tools + Scripts• Speaker Question

Everything

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SQL Tuning Tools of the Trade• Stand-alone Scripts• SQLHC• SQLTXPLAIN

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Commonalities• Input one SQL statement– SQL_ID

• Output one or more diagnostics files– Used mainly for SQL Tuning

• Make use of some Oracle licensed features– Diagnostics and/or Tuning Packs

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Capabilities Compare

Stand-alone Scripts SQLHC SQLTXPLAIN

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Footprint Compare

Stand-alone Scripts SQLHCSQLTXPLAIN

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Stand-alone Scripts• Specialized diagnostics for SQL Tuning– planx.sql: Execution Plans from Memory and RAC– sqlmon.sql: SQL Monitor Report– sqlash.sql: Active Session History (ASH)– mystat.sql: Performance Statistics (counters)

• Install nothing on the database

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SQLHC• Provides most common diagnostics needed

for SQL Tuning• Installs nothing on the database

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SQLTXPLAIN• Provides about everything that is ever need

for SQL Tuning– Robust set of diagnostics reports– Automatic extraction of Test Case

• Installs two self-contained schemas

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References• Stand-alone Scripts– carlos-sierra.net

• SQLHC– MOS 1366133.1

• SQLTXPLAIN– MOS 215187.1

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Contact Information• carlos.sierra@enkitec.com• carlos-sierra.net• @csierra_usa