2013年6月25日
[bbk4345]小布-OCP 042全真试题讲解
摘要： 参考视频:[bbk4345]小布-OCP 042全真试题讲解在非归档模式下，你只能做冷备；做热备是无法保证数据的一致性的.在归档模式下，是可以做热备的，其原理是根据归档日志文件来实现数据的一致性.1、Your test database is running in NOARCHIVELOG mode.What are the implications of this?You can perform open database backups.You can perform closed database backups.You cannot perform schemal-level logi 阅读全文
posted @ 2013-06-25 16:46 ArcerZhang 阅读(634) 评论(1) 推荐(0) 编辑
[bbk4344]小布-OCP 042全真试题讲解
摘要： 参考视频:[bbk4343]小布-OCP 042全真试题讲解什么叫commit？commit就是oracle server process将redo log buffer中的数据，写到redo log file中.1、Which naming method uses the tnsnames.ora file to store connect descriptor used by the client while connecting to the database instance from a remote machine?A.host naming methodB.local namin 阅读全文
posted @ 2013-06-25 12:35 ArcerZhang 阅读(422) 评论(1) 推荐(0) 编辑
[bbk4343]小布-OCP 042全真试题讲解
摘要： 参考视频:[bbk4343]小布-OCP 042全真试题讲解1、You are in the middle of a transaction and very crucial data has been modified.Because of a hardware failure,the instance has shutdown before synchronizing all the database files.Which two statements are true ? (Choose two.)A.On startup,SMON coordinates instnace recov 阅读全文
posted @ 2013-06-25 10:07 ArcerZhang 阅读(498) 评论(1) 推荐(0) 编辑