You work as a database administrator for Certkiller .com. Users complain that their query is taking a long time to complete. You suspect the database buffer cache size to be the reason， and you define an alert to be generated when the buffer cache hit metric goes below 85%. When you observe the dynamic performance views， you find that the buffer cache hit ratio is 81% but no alerts are being generated. What could be the reason for this problem？（） The advisory memory has been turned off.。 The DB_CACHE_ADVICE parameter has been set to OFF in the parameter file.。 The STATISTICS_LEVEL parameter has been set to BASIC in the parameter file.。 The TIMED_STATISTICS parameter has been set to FALSE in the parameter file.。 The STATISTICS_LEVEL parameter has been set to TYPICAL in the parameter file.。
角色扮演
You created a custom menu for the Order Entry application. Which step do you perform before attaching the menu module to the form module?（） Select file-->Administration-->Convert 。 Select file-->Administration-->Execute 。 Select file-->Administration-->Compile File。 No further step is necessary.&e。
You have specified the warning and critical threshold values of an application tablespace to be 60% and 70% respectively. From the tablespace space usage metrics， you find that the actual space usage has reached the specified warning threshold value， but no alerts have been generated. What could be the reason for this？（） The EVENT parameter was not set。 The SQL_TRACE parameter is set to FALSE。 The Enterprise Manager Grid Control is not used。 The STATISTICS_LEVEL parameter is set to BASIC。 The TIMED_STATISTICS parameter is set to FALSE。
秦始皇统一中国后采取“废分封，立郡县”的决策，其主要目的在于（）。 维护皇权的至高无上。 建立专制主义中央集权制度。 巩固统一的封建国家。 维护新兴地主阶级利益。
Given:
What is the result？（）
