摘要： 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

摘要： 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

摘要： 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

摘要： Overview of Checkpoints A checkpoint is a crucial mechanism in consistent database shutdowns, instance recovery, and Oracle Database operation general 阅读全文

摘要： 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

摘要： 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

摘要： 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