* Exam Number / Code: 1Z0-054 * Name of exam: Oracle Database 11g: Performance Tuning * Questions and Answers: 192 Q & A * Weather update: 29/03/2010 * Price: $ 120. 00
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1. After running the SQL Performance Analyzer (SPA), some SQL statements in the EPA retreated output. Identify two actions that can be proposed for these regressed SQL statements. (Choose two.) A. Running SQL Access Advisor B. Add a SQL plan envisaged C. submission to the SQL Tuning Advisor D. Monitor database diagnostic startup (ADDM) Answer: BC
2. A workload batch that historically completed during maintenance between 22:00 and midnight is showing poor performance and end at 02:00. To aid in the diagnosis of performance degradation, the senior DBA in their organization asks you to run the awrddrpt. SQL script to produce a comparative periods. Which two statements are true about the relationship produced by this script? (Choose two.) A. It is updated automatically based on moving base line of the window. B. It compares data between two specific periods of the same duration. C. Normalizes the statistics by the amount of time spent in the database for each time period. D. We compare the data between two successive periods equal to or different and is updated every 60 minutes. Answer: AC