checkpoint antivirus

First, the general method 1, please upgrade your anti-virus software to the latest version, to ensure that the virus library is the latest. 2, for networked users, please break off the network before antivirus. Non-system viruses that have been activated or are in attack In this case, if the antivirus in the general Windows environment, the effect may be greatly compromised. Although, now anti-virus sof

Implementation of database transactions-fault recovery (2) (undo log checkpoint) bitsCN.com In the previous article on implementation of database transactions (I) fault recovery (undo log), we introduced the application of undolog in data recovery. This article will continue to introduce undolog, however, we will introduce how to use undolog to recover data. At the end of the previous chapter, we left a problem: in the model described in the previous

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Original link http://www.cnblogs.com/chenpingzhao/p/5107480.htmlFirst, IntroductionConsider this scenario : If the redo log can grow infinitely and the buffer pool is large enough, it is not necessary to flush the new version of the pages in the buffer pool back to disk. Because when a outage occurs, it is entirely possible to redo the log to recover the data from the entire database system to the time of the outage.However, this requires two prerequisites: 1, the buffer pool can cache all the d

Our computer will be subject to the virus at any time, antivirus anti-virus is one of the things that our computer users need to do. However, in many cases, our understanding of antivirus antivirus is there is a mistake, misunderstanding. Small knitting here to organize several of our misunderstanding. 　　Common anti-virus

MySQL Tutorial: About the checkpoint Mechanism I. Introduction Think about this scenario: If the redo log can be infinitely increased and the buffer pool is large enough, you do not need to refresh the new version of the page in the buffer pool to the disk. When a crash occurs, you can use the redo log to restore the data in the entire database system to the time when the crash occurs. However, this requires two prerequisites: 1. The buffer pool can c

1. Oracle checkpoint description 1.1 checkpoint (1) A synchronization event at aspecific point in time (2) causes some or all dirty blockimages to be written to the database thereby guaranteeing that blocks dirtiedprior to that point in time get written (3) brings administration up to date (4) several types of checkpoint exist Redolog

(From: http://space.itpub.net/12361284/viewspace-346) At the beginning of the year, I read the book deep dive written by eygle, and I felt a lot of GAINS.We can summarize the two topics SCN and checkpoint. CheckpointMany people complicate the checkpoint concept. In fact, the checkpointDatabaseThe real significance of the concept introduction is to reduce the time spent in database recovery (instance recover

OverviewIn the "in-depth understanding of spark: core ideas and source analysis," a simple introduction of the next Rdd checkpoint, the book is a pity. So the purpose of this article is to check the gaps and improve the contents of this book.Spark's Rdd will save checkpoints after execution, so that when the entire job fails to run again, the successful RDD results have been run before recovery from the checkpoint