Which two statements are true when when a Coherence cluster member is lost ？ （） Remaining members recover by repartitioning the data across the remainig cluster members in parallel with normal request processing。 Some latencies may be experienced due to higher priority of recovery。 In flight operations may be lost。 A system administrator must manually assist recovery of the lost data。
原型化方法从用户界面的开发人员入手，首先形成（） 需求不确定性的用户界面。 用户界面需求分析说明书。 系统界面原型。 完善的用户界面。
The database administrator of your company created a public synonym called HR for the HUMAN_RESOURCES table of the GENERAL schema, because many users frequently use this table. As a user of the database, you created a table called HR in your schema. What happens when you execute this query?（） You obtain the results retrieved from the public synonym HR created by the database administrator.。 You obtain the results retrieved from the HR table that belongs to your schema.。 You get an error message because you cannot retrieve from a table that has the same name as a public synonym.。 You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a Cartesian product.。 You obtain the results retrieved from both the public synonym HR and the HR table that belongs to your schema, as a FULL JOIN.。
摩擦学研究的对象很广泛，概括说研究摩擦、磨损（）和润滑（）的原理及其应用。
You have executed this command to change the size of the database buffer cache： SQL> ALTER SYSTEM SET DB_CACHE_SIZE=2516582； System altered. To verify the change in size， you executed this command： SQL> SHOW PARAMETER DB_CACHE_SIZE NAME TYPE VALUE ------------------- ----------- ------------------ db_cache_size big integer 4194304 （4M） Why is the value set to 4194304 and not to 2516582（） because 4194304 is the granule size。 because 4194304 is the standard block size。 because 4194304 is the largest nonstandard block size defined in the database。 because 4194304 is the total size of data already available in the database buffer cache。
The warning and critical threshold values have been set to 85% and 97%， respectively， for one of the tablespaces. The current tablespace space usage is 54%. You modify the warning threshold to be 50 % and critical threshold to be 53% in Database Control. Which statement is true？（）
