Oracle
1Z0-060 · Question #33
1Z0-060 Question #33: Real Exam Question with Answer & Explanation
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Question
You notice a high number of waits for the db file scattered read and db file sequential read events in the recent Automatic Database Diagnostic Monitor (ADDM) report. After further investigation, you find that queries are performing too many full table scans and indexes are not being used even though the filter columns are indexed. Identify three possible reasons for this.
Options
- AMissing or stale histogram statistics
- BUndersized shared pool
- CHigh clustering factor for the indexes
- DHigh value for the DB_FILE_MULTIBLOCK_READ_COUNT parameter
- EOversized buffer cache
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