Exam (elaborations)
Oracle OCA Exam 1Z0-062 Chapter 14 Managing Performance: SQL Tuning 2023/2024
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Oracle OCA Exam 1Z0-062 Chapter 14 Managing Performance: SQL Tuning 2023/2024 14.01 Manage Optimizer Statistics Objects stats are imperfect, why? - ANSWER-a) they're static, must be refreshed periodically or they are stale b) they're usually gathered via sampling, not 100% all rows are e...
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