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Use Flashback to view Oracle Table historical moment data

Use Flashback to view Oracle Table historical moment data1. View the table history moment dataSELECT * from Tab_test as of TIMESTAMP to_timestamp (' 20140917 10:00:00 ', ' yyyymmdd hh24:mi:ss ');2. Use Flashback table to restore the tables to a certain time in the pastALTER TABLE tab_test enable row movement;Flashback table Tab_test to timestamp (' 20140917 10:00:00 ', ' yyyymmdd hh24:mi:ss ');ALTER TABLE tab_test disable row movement;3. Check the ope

Battle Program Ape (37)--Historical Dynasty University (i)--opening

. I think there are things that you think are right. Then do it right away, or you won't have time or mind to do it later. Suppose there's any point in writing these articles. It means a lot to me.Text to text, the really important thing is to reveal the lines of the university's recollection and thinking.I'm not very talkative, but writing is a big hobby of mine. is also a way of expression. Saying goes throat. I'll say what I have to say. I don't have to say anything that I don't have to say o

Interesting historical overview of Linux

original lab. Later, he found himself unable to complete all the work, so he wanted to set up an open team to continue his efforts.After 1983, because of the replacement of the laboratory hardware, so that Storman can not continue to the original hardware and operating system to continue to write the free program ~ and he further found that in the past, he used the Lisp operating system, is the MIT patent software, is not shared, This is a hindrance to the desire to set up an open community of

Linux Learning Notes (1) ~linux Interesting historical overview

, however, continued to develop new programs and software in the original laboratory. Later, he found himself unable to complete all the work, so he wanted to set up an open team to continue his efforts.After 1983, because of the replacement of the laboratory hardware, so that Storman can not continue to the original hardware and operating system to continue to write the free program ~ and he further found that in the past, he used the Lisp operating system, is the MIT patent software, is not sh

Differences between real-time/historical databases and relational databases

Differences between real-time historical databases and relational databases 1. Introduction to real-time databases and relational databases (1) real-time database is a branch of the development of database systems, it is suitable for processing constantly updated and rapidly changing data and transactions with time constraints. Real-time database technology is a combination of real-time systems and database technology. Real-time Differences between re

Spring's historical Theory (data desensitization)

. Pay special attention to the conditions of use of the propagation_nested: when using the JDBC 3.0 driver, only Datasourcetransactionmanager is supported as the transaction manager. A JDBC-driven Java.sql.Savepoint class is required. There are some JTA transaction manager implementations that may also provide the same functionality. With propagation_nested, you also need to set Platformtransactionmanager's Nestedtransactionallowed property to true; The Nestedtransactionallowed property value de

Delete historical records in Linux

Article Title: delete historical records in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Note: If the target is a linux server during intrusion, do not forget the history of the history command. 1. Modify/etc/profile and change HISTSIZE = 1000 to 0 or 1. Clear the user home path. Bash_history 2. immed

Highcharts application: Historical Data curves of highcharts. Use jquery to turn pages ~~

',Defaultseriestype: 'spline ',Marginright: 10,Zoomtype: 'X ',Events :{Load: function (){VaR series = This. Series [0];}}},Title :{Text: 'historical data curve'},Xaxis :{Type: 'datetime ',Tickpixelinterval: 100,Datetimelabelformats:{Minute: '% E. % B % H: % m ',Hour: '% B/% E % H: % m ',Day: '% E/% B ',Week: '% E. % B ',Month: '% B % y ',Year: '% y'}},Yaxis :{Title :{Text: 'value'},Plotlines :[{Value: 0,Width: 1,Color: '#000000'}]},Tooltip :{Formatte

Oracle AWR threshold affects historical execution plans

Some netizens recently mentioned why the historical execution plan of SQL statements cannot be viewed in dba_hist_ SQL _plan. This problem is due to the fact that the threshold value set by Oracle does not capture all SQL statements by default, therefore, it is normal to see some SQL history execution plans. In Oracle 9i, we can set different snapshot levels to obtain detailed information of different degrees. You can also separately configure the SQL

Query historical commands and use (history)

~ /. Bash_history -R: Read the content of histfiles to the history Memory of the current shell; -W: Write the Current history Memory to histfiles! Example 1: List all history memories in the current Memory [Root @ instructor Desktop] # history # Omitted earlier 1017 man bash 1018 ll 1019 history 1020 history The information listed is divided into two columns. The first column is the code of the command in this shell, and the other is the content of the command itself! The number of Command reco

PHP Cookei code that records the user's historical browsing information, phpcookei

PHP Cookei code that records the user's historical browsing information, phpcookei [Basics] Common Cookie methods: $ _ COOKIE ['recordluhuidudu'] to get the CookieSetcookie ('recordluidudu', ", time ()-3600*24*30); setcookie (field name, Data, expiration time); Set Cookie Note] To reset a Cookie, you need to invalidate the previous Cookie. The same method is also used to delete the Cookie:Setcookie ('recordluidudu', ", time ()-3600*24*30 ); [Sample Co

Oracle AWR threshold affects historical execution plans

Some netizens recently mentioned why the historical execution plan of SQL statements cannot be viewed in dba_hist_ SQL _plan. This problem is due to the fact that the threshold value set by Oracle does not capture all SQL statements by default, therefore, it is normal to see some SQL history execution plans. In Oracle 9i, we can set different snapshot levels to obtain detailed information of different degrees. You can also separately configure the SQL

Make SQL * Plus in Linux have the historical callback function

It is inconvenient to use SQL * Plus on Linux, that is, there is no historical callback function. For SQL * Plus on Windows, you can use the "Up and down" arrow to call commands that have been used before. It is quite convenient to modify, edit, and repeat previous commands. How can this problem be solved?The answer is to install a tool: UnireadUniread installation requirements1. Perl must be installed on Linux2. Install the readline, Term, and IO too

Witness the Alphago historical moment

Beijing time March 12, 2016 16:10 minutes, Li Shishi cast defeat, AlphaGo 3:0 to determine the results of the match.March 15, no accident, the results will become 5:0 win-win, Alphago will be in the history of the Earth's intelligence to draw a strong pen.Humans have always believed that "the computer cannot be handle" like Weiqi, which is much more complex than the total number of atoms in the universe.However, the real handle is not the game, in fact, human beings themselves.Follow the highlig

Show current score and historical highest scores

usingUnityengine;usingSystem.Collections;usingUnityengine.ui; Public classgameover:monobehaviour{ Public StaticGameover _instance; PublicText Bestscore; PublicText Nowscoretext; voidAwake () {_instance= This; This. gameobject.setactive (false); } voidStart () {//Bestscore = getcomponent//Nowscore = getcomponent } Public voidShow (floatNowscore) { //This is where you set up a storage float type of data. floatHistotyhighscore = Playerprefs.getfloat ("Historyhighsco

The EJB of historical mystery

find it seems that the system relationship between EJB and the B/s structure of the Web application is not very large. To summarize: the principle of EJB implementation: is to put the original client implementation of the code on the server side, and rely on RMI to communicate. RMI Implementation principle: It is through the Java object Serializable mechanism to achieve the distribution of computing. Server cluster: It is through RMI communication, connect the server of different function modul

xinbei-Monitoring management-historical video retrieval = Add image download Path function

① in the Viewallplat project to create Class Filetool under Package Com.baosight.viewall.common, inherit applets, add the following method to the class:/** * @authorDongmingwang * @time 20150807 *@returnFilePath*/ PublicString Selectfilepath () {Try{Uimanager.setlookandfeel (Uimanager.getsystemlookandfeelclassname ()); JFileChooser JFC=NewJFileChooser (); Jfc.setfileselectionmode (jfilechooser.directories_only); Jfc.showdialog (NULL, "select"); File File=Jfc.getselectedfile ()

BZOJ4241: A historical study

The MO team algorithm, consider how to quickly maintain the maximum importance degree.Considering that the answer is only $o (n) $ of different values, the size of these values can be processed first by $o (N\log N) $, and the values are discretized, and two pointers to the pre and NXT are maintained for each occurrence of each event. Indicates the number of occurrences decreased or increased one after the first few small.These values are then chunked, and each block maintains what values appear

Historical command: History

] ~]# history-w# in the default case, the history will be written into the ~/.bash_history![Email protected] ~]# echo $HISTSIZE1000We can use the relevant features to help us execute the order! For example:[Email protected] ~]#!number[Email protected] ~]#!command[[email protected] ~]#!!Parameters:Number: The meaning of the execution of the first few directives;Command: the command that is searched forward by the nearest command to "command string Start command" and executes;!! : The last instruc

How to display Historical Changes of primary data (4)

Business scenario 4:Comparable architecture and comparable data. Users want to see trend analysis of historical comparable data,Reports are collected only for businesses existing in both the old and new organizational structures to collect statistics on the business income of the parent company.. That is, all impacts caused by organizational structure changes are excluded from the statistics of reports.Comparable data for analysis. Modeling Method:I

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