Your database instance is configured with automatic undo management and the UNDO_RETENTIONparameter is set to 900 seconds. You executed the following command to enable retention guarantee: SQL> ALTER TABLESPACE undotbs1 RETENTION GUARANTEE; What effect would this command have onthe database（） The extents in the undo tablespace retain data until the next full database backup.。 The extents containing committed undo in the undo tablespace are not overwritten for at least 15 minutes.。 The extents containing committed data in the undo tablespace are not overwritten until the instance is shutdown.。 The extents containing committed undo in the undo tablespace are transferred to Flash Recovery Areabefore being overwritte。
战略联盟
我国《广告法》规定了广告法律的基本原则有（） 公平原则。 保护消费者合法权益原则。 守法原则。 真实原则。 诚实信用原则。
（）是基层所队内务管理正规化中的内容。 统一悬挂物、摆放物。 枪支管理。 窗口服务。 计算机应用。
联系实际论述全球城市产生的主要条件。
循证医学结论的应用范围包括（）
