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全部博文（487）
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.........【阅读全文】
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.........【阅读全文】
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.........【阅读全文】
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 .........【阅读全文】
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.........【阅读全文】
