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摘要： 3、Which structure can span multiple data files? A) a permanent tablespace B) a bigfile tablespace C) a temporary tablespace D) a segment E) an extent 阅读全文

摘要： 2、Which two are true about Optimizer Statistics? A) They do not persist across Instance restarts. B) They are automatically updated when DDL statement 阅读全文

摘要： 1、Which two are true about the Archive (ARCn) processes? A) They automatically delete obsolete archive logs to make space for new archive logs. B) The 阅读全文