historical person

This paper presents the historical changes of Java technology by introducing the new/old memory model of Java.The old Java memory modelJava uses a concurrent model of shared memory that shares variables between threads. The Java language defines the threading model specification, which controls the interaction of threads and variables through a memory model, thus enabling communication between Java threads. Before JDK5, Java had been using the old mem

I don't know if there's anything to clean up. A directory history file needs to be cleaned. There will probably be a lot of other places to clean up the history files, which may be used. I spent the past two days writing a script, cleaning more convenient, there will be a large number of historical documents to clean up the words can be used. The commands used in scripts are only Linux, and are not supported like Solaris, so they can only be run on L

Believe Windows7 's taskbar brings you a lot of convenience features, especially jump lists, and taskbar icon merging, program thumbnail preview (Aero Peek). But compared to some of the features also bring a lot of confusion, such as Jump List, default list is commonly used, frequent use and historical traces. In the current network environment with special attention to personal privacy, even the personal computer, but also to do a good job of persona

In daily use, the system records your history of operations to make it easier to operate next time, but there is also a risk of leaking user privacy, especially in public computers. Historical Trace Cleanup Module can help you to clear these historical records, on the one hand protects the user's privacy, on the other hand also makes the system cleaner, further enhances the running speed. First, the netwo

One.DescriptionSome of the table data in the OLTP library is large and there is a constant amount of data added every month. Because historical data is not visited in this library, it is analyzed in 1 other OLAP libraries. Therefore, the historical data is migrated to the OLAP library. Operations on such historical data migrations. A better approach is to use a p

Tags: Zabbix historyA description of the problemWith the Zabbix monitoring of the host and monitoring projects increased, Zabbix historical data will be more and more, MySQL database disk space is very easy to full, while Zabbix front-end query data will become more and more slow. Especially with the Zabbix API to generate custom screen, opening each screen is very slowView Zabbix Database Catalog files# ls-lh|grep G Total 248G -rw-rw----1 mysql mysql

manufacturer's mobile phone has a different operating system, while the performance of mobile phones is limited, which undoubtedly adds a large number of difficulties for app developers.In the era of smartphones, Android and iOS systems have almost monopolized the entire smartphone platform. Android and iOS accounted for 92.3% of the total market in the first quarter of 2013 for smartphone shipments in IDC, much more than any other competitor. The unification and openness of mobile phone system

": 50928600000," Liability ": 1721550000," income " : 28527400000, "profit": 3954310000},{"code": "601633", "date": "2014-09-30", "Asset_per_share": 10.2112, "Earning_per_ Share ": 1.8361," Cash_per_share ": 2.1708," Spare_asset_per_share ": 1.4639," asset ": 54305500000," Liability " : 1708900000, "income": 42586600000, "profit": 5586250000},{"code": "601633", "date": "2014-12-31", "Asset_per_share" : 10.9951, "Earning_per_share": 2.6431, "Cash_per_share": 2.0036, "Spare_asset_per_share": 1.46

The Zabbix API can obtain historical data through the json rpc protocol.You can use a script or any tool that supports json rpc to use APIs. Basic request formatThe simplified JSON request of Zabbix API is as follows:{"Jsonrpc": "2.0 ","Method": "method. name ","Params ":{"Param_1_name": "param_1_value ","Param_2_name": "param_2_value"},"Id": 1,"Auth": "a826fca79a0795ccc1224dc7610972f ",}See the following line:● "Jsonrpc": "2.0"-this is a standard jso

The customer requested that the historical data in the database of the two projects on the current network be cleaned up recently, so he sorted out the section usage in the next application, mainly to view the table section. The script used is as follows. Create or replace procedure get_tab_rowsAs-- Drop Table tabsrow-- Create Global Temporary Table tabsrow (Name Varchar2 (30), Rowsnum Number) On Commit Delete Rows;-- Create Table tabsrow (Name Varcha

while, but recently it became top SQL. In other words, although it was previously top SQL, it has recently become TOP 1. In this case, we can compare the historical execution plans of SQL statements to analyze the causes of slow SQL statements or changes in the execution plans. The following example is used to simulate the SQL Execution Plan variation. 1. Create a demo Environment -- Demo EnvironmentScott @ SYBO2SZ> select * from v $ version where ro

can not be accessed or stopped, so the author found the use of RunDll32.exe implementation, mainly on the call Win32 API function ShellExecute Delete IE cache;3. Finally, the function and other operations of the Shellexcute () function are supplemented, and the code that invokes process startup RunDll32.exe is added.At the same time, the author describes the use of Windows recent history articles, cookies, and sessions in a series of articles, and finally completes this article to implement the

The following articles mainly explain the problem of damage to the historical DB2 backup file. In actual operations, the DB2 backup history file is often damaged, how can we answer this question? The following articles will provide the correct answer. DB2 and DB2 backup Environment Product: DB2 Platform: cross-platform Version: DB2 5.2; DB2 6.1 The DB2 backup history file is corrupted. Answer If the DB2 backup history file db2rhist.

Android OSis a mobile device operating system developed by Google and the Open Handset Alliance, and its earliest version of Android 1.0 beta was released on November 5, 2007, and several updates have been released to date. These newer versions have fixed bugs on the previous version and added new features that were not available in the previous version. Since May 2009, the Android operating system has changed to dessert as a version number, and these versions are named in the order in which the

reconstruct and execute the test example, until it can achieve a pleasant effect.Second, the time is urgent function requirementsIn the development process, most of the encounters should belong to this category of problems, the duration of the requirements are relatively tight, and for the original only a major understanding, or only to see part of, and immediately add or change the function. For such a situation, as far as possible to do a steady, new features do not know the old code related

Restore accidentally deleted data information: 1. Execute alter table table_name enable row movement; 2. Execute flashback table table_name to timestamp to_timestamp ('2017-05-24 14:59:36 ', 'yyyy-mm-dd hh24: MI: ss '); Query historical operation data: A reasonable method is to first find the accidentally deleted data from the flash back area, and then insert the accidentally deleted data into the original table. 1. Execute select * from a

In Linux, SQL plus cannot be used to search for historical commands by default. it is inconvenient to use and affects efficiency. However, you can use a third-party tool rlwrap to solve this problem. Rlwrap download: http://utopia.knoware.nl /~ Hlub/uck/rlwrap/ 1. Install readline You can use the yum tool to complete [Root @ rhel6 ~] # Yum-y install readline * If you do not have any source code, you can download the relevant installation package

Jeane, located at the southernmost end of the Hanoi delta in central Mali, is famous for its unique sub-Saharan-Sudan architectural style. Since 250 BC, some people have lived, And Jeane has developed into a sub-Saharan gold trading center. In the 15th to 16th centuries, Jeane became the center of the spread of Islam. There are about 2000 ancient buildings in the city, which are well preserved. To adapt to seasonal floods, houses are built on the hill.Laribella Chapel The elabella Chapel in Eth

@ Page {margin: 2 cm}P {margin-bottom: 0.21}--> The history of modern software industry is not very long,30The year is not short. In30During the year, which of the following are the most important tasks in the global software industry (assuming commercial software is temporarily excluded? The answer to this question is definitely not the only one. Now, some people come up with an answer, which has some reference value. Of course, anyone may have different opinions on this answer. Lunar January1

pages written for Safari, so it pretended to be safari. Chrome uses WebKit and disguise itself as safari. WebKit is disguised as khtml, khtml is disguised as gecko, and finally all browsers are disguised as Mozilla, this is why all browsers have Mozilla In User-Agent. Chrome calls it"Mozilla/5.0 (windows; U; Windows NT 5.1; en-US) applewebkit/525.13 (khtml, like gecko) Chrome/0.2.149.27 Safari/525.13". Because of the above history, the current user-agent string has become a mess and almost ca