Robin Moffatt • 5/26/2011

Data Warehousing and Statistics in Oracle 11g - Automatic Optimizer Statistics Collection

This technical article critiques the use of Oracle 11g's automatic optimizer statistics collection in data warehouse environments. The author argues it masks poor design, becomes unreliable at scale, and conflicts with batch processing schedules. It recommends disabling the default job and instead integrating manual statistics gathering into the ETL/ELT data flow for better control and performance.

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#oracle #Database Optimization #Etl