Oracle
1Z0-117 · Question #113
1Z0-117 Question #113: Real Exam Question with Answer & Explanation
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Question
What are three common reasons for SQL statements to perform poorly?
Options
- AFull table scans for queries with highly selective filters
- BStale or missing optimizer statistics
- CHistograms not existing on columns with evenly distributed data
- DHigh index clustering factor
- EOPTIMIZER_MODE parameter set to ALL_ROWS for DSS workload
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