Oracle EM中设置基于磁盘的备份配置和备份策略
可以设置一些与Oracle数据库相关的设置以及备份策略。比如：可以设置传输到磁盘驱动器的并发数据流，可以根据数据库服务器的CPU配
在使用RESTORE DATABASE语句恢复数据的时候，RMAN使用资料库中的记录选择执行恢复操作所需要的备份数据。RMAN资料库的主要保存在数据库的控制文件中，因此他对于RMAN来说是至关重要的，必须保护好控制文件。用户可以指定RMAN资料库的副本，它存储在一个叫做RECOVERY CATALOG的方案中。RECOVERY CATALOG方案位于一个独立的数据库中，，它可以为多个其他数据库保存元数据。
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When might a full table scan be faster than using an index in MySQL?
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Full table scanning may be faster in MySQL than using indexes. Specific cases include: 1) the data volume is small; 2) when the query returns a large amount of data; 3) when the index column is not highly selective; 4) when the complex query. By analyzing query plans, optimizing indexes, avoiding over-index and regularly maintaining tables, you can make the best choices in practical applications.
Can I install mysql on Windows 7
Apr 08, 2025 pm 03:21 PM
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Laravel Eloquent ORM in Bangla partial model search)
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MySQL: The Ease of Data Management for Beginners
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