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How to deal with Oracle DataGuard archive log loss A database is configured with Physical Transaction uard (hereinafter referred to as dg). Because no check is performed, the archive day is deleted on the master database, and the slave database is

Introduction There are two main compression algorithms: lossy and lossless. Lossy compression algorithms reduce files by removing small details that require a large amount of data to be stored under fidelity conditions. In lossy compression, it is

The full text reads as follows:I am currently completing my last contract project. One thing I need to consider in the final stages of this project is how to optimize the memory usage of the game.In today's Idevblogaday article, I'll tell you how

Http://msdn.microsoft.com/en-us/library/ms775147.aspx   MIME type detection in Internet Explorer In Microsoft Internet Explorer 4.0 and later, MIME type determination occurs in URL monikers through the findmimefromdata method. determining the

If we invoke the Getpackage method on the class object, we can get the package object that describes the package in which the class is located (the package class is defined in Java.lang). We can also obtain the package object by calling the static

Contents of the Packagethe contents of the package should be carefully designed so that it contains only functionally related classes and interfaces. The class in the package is free to access the private members of other classes in the package, and

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  From: http://hi.baidu.com/harrybobo/blog/item/ae3347b51711afc637d3ca69.html   I. Why should I use library files?We will certainly encounter this situation in actual programming: There are several projects with the same function modules,The

Brief introductionYou execute the man tcpdump command, and you will see that the description of tcpdump in the document is "Dump traffic on a network". As can be seen, tcpdump is a packet analysis tool that intercepts packets on the network based on

Rman Based on Time Incomplete recovery SQL> select sysdate from dual; SYSDATE-------------------2013-07-31 22:36:51 run {SQL 'alter session nls_date_format = "yyyy-mm-dd hh24: mi: ss "'set until time' 2013-07-31 22:45:51 'restore database; recover