Reference: http://blogs.msdn.com/b/felixmar/archive/2011/08/29/partitioning-amp-archiving-tables-in-sql-server-part-2-split-merge-and-switch-partitions.aspx In the 1st part of this post, I explained how to create a partitioned table using a partition…

Archiving for File Count Reduction Note: Archiving should be considered an advanced command due to the caveats involved. Archiving for File Count Reduction Overview Settings Usage Archive Unarchive Cautions and Limitations Under the Hood Overview Due…

1 前言 本文介绍的是一个归档解档方法,也是编码和解码时候所做的事情,和如何进行,编码和归档其实就是将对象关系转化为字节流并且归档为特殊的文件,解码和解档是逆过程. 英文原文:http://blog.csdn.net/developer_zhang/article/details/12082301 2 详述 归档(Archiving)是一种将一组关联的对象转化为一个能够在应用程序之间存储或者传输表单的方法.归档的最后结果--归档文件(an archive)--是一个二进制的记录了对象的标示,他们…

其中TRPerson为自定义的继承自NSObject的类的子类  其中有两个属性,name 和 age .h文件 #import @interface TRPerson : NSObject<</span>NSCoding> @property (nonatomic,strong)NSString *name; @property (nonatomic,strong)NSNumber * age; //初始化方法 - (id)initWithName:(NSString*)name…

在同一张表中,通过将row置为inactive状态来实现数据的归档.数据库中,可以对那些inactive row进行压缩优化.在实现归档的同时,应用可以被限制只访问那些active状态的数据.默认情况下,那些inactive row对应用是不可见得. 开启表的in-database archiving功能,在创建表的时候要使用关键字"row archival".使用关键字"row archival"创建的表会增加一个隐藏列:ora_archive_state. SQ…

A number of trends in the IT industry have contributed to the increasing size of ERP application databases and show no signs of abating.  These include dramatic reductions over recent years in the cost of disk, such that it has often been easier to b…

Oracle Database 12c中引入了 In-Database Archiving的新特性, 该特性允许用户通过对表上的数据行标记为inactive不活跃的,以归档数据. 这些inactive的数据行可以通过压缩进一部优化,且对应用来说默认不可见.该特性可以对现有代码做最少改动的情况下,实现了这种“标记删除”的功能和需求. 12c之前:有些应用有“标记删除”的概念,即不是删除数据,而是数据依然保留在表中,只是对应用不可见而已.这种需求通常通过如下方法实现:1)  给相关表增加一个另外的列…

If space ran out in an archive destination, after you fix the problem, you may still recieve the following error in your alert_log: ARC1: Archiving not possible: No primary destinations A quick way to solve this is to modify your archive destination…

1. Compressing Files at the Shell Prompt Red Hat Enterprise Linux provides the bzip2, gzip, and zip tools for compression from a shell prompt. The bzip2 compression tool is recommended because it provides the most compression and is found on most UNI…

https://developer.apple.com/library/content/documentation/General/Conceptual/DevPedia-CocoaCore/Archiving.html#//apple_ref/doc/uid/TP40008195-CH1-SW1 Object archiving Archiving is the process of converting a group of related objects to a form that ca…