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发布时间：2019-06-27 14:02:41
which two statements describe the relationship between a scheduler window, a resource manager plan, and a job class?b) a scheduler window together with a job class, controls resource allocation for a job using that job class in that scheduler windowd) a scheduler window can control resourc.........
发布时间：2019-06-27 13:15:39
the hr user executes the following query on the employees table but does not issue commit, rollback, or any data definition language (ddl) command after that:from employeeshr then opens a second session.a) select job from employees where job='clerk' for update of empno;c) select em.........
发布时间：2019-06-26 15:54:37
when is the undo_retention parameter value ignored by a transaction?b) when the undo tablespace is of a fixed size and retention guarantee is not enabledd) when the data file of the undo tablespace is autoextensible(解析：启用闪回数据库时，对undo_retention这个参数是没有任何关系，其它的.........
发布时间：2019-06-26 14:33:27
the hr. departments table is the parent of the hr. employees table. the employees .which statement is true?b) the transaction acquires a table lock on the employees table. this lock enables other sessions to query but not update the employees table until the transaction on the departments .........
发布时间：2019-06-26 14:06:56
which two statements are true about the database configuration assistant (dbca)?b) it can be used to copy an existing oracle database to a new host and apply any patches necessary in the new host.d) it can be used to create a database template from an existing database.answer：de.........