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一个DN是指一系列通过逗号连接起来的RDN。 一个RND是一对属性值 举个例子: DC=COM,CN=test.com, O=org 这就是一个DN. 阅读全文
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Managing Undo Beginning with Release 11g, for a default installation, Oracle Database automatically manages undo. There is typically no need for DBA i 阅读全文
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Undo data Records of the actions of transactions, primarily before they are committed. The database can use undo data to logically reverse the effect 阅读全文
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Overview of Checkpoints A checkpoint is a crucial mechanism in consistent database shutdowns, instance recovery, and Oracle Database operation general 阅读全文
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The database can use table compression to eliminate duplicate values in a data block. This section describes the format of data blocks that use compre 阅读全文
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Overview of Data Blocks Oracle Database manages the logical storage space in the data files of a database in units called data blocks, also called Ora 阅读全文
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Why you don't want to set _partition_large_extents = FALSE By: Roger Macnicol I've seen some blogs recommending that _partition_large_extents be set t 阅读全文