This article describes how to use the timing wheel to kick off an idle connection, and a connection is considered an idle connection if it does not receive data for several seconds.
The code for this article is shown in Http://code.google.com/p/muduo/source/browse/trunk/examples/idleconnection
In a serious network program, the application layer's heartbeat protocol is essential. The heartbeat message shou
Label:Handling of "Connected to an idle instance" issue in Sqlplus:The issue is explained in the following article:How to Check the environment Variables for an Oracle Process (document ID 373303.1)The following is an excerpt from this article:The most used application of this document are when dealing with the ' Connected to an idle instance ' scenario for a bequeat H SYSDBA connection.This error indicates
In recent years, with the extensive use of Python by Google, YouTube, IRobot, and other large companies, python has become an excellent programming language in terms of software quality, development efficiency, program portability, and support for standard libraries, it can complete various tasks for websites, game development, aerospace control, and other fields. This topic hopes to learn Python from scratch through the "Python learning manual" and related guidance on the website, and hope to h
Original: http://www.jb51.net/softjc/142580.html--------------------------------------------------------------------------------------------------------------- ------------------------------------------Because of the popularity of Google, YouTube and other large companies, Python programming language is becoming more and more popular, and many programming enthusiasts will also do python for the first programming language.Today we'll talk about the first step of learning, installing the Python
The same key is not allowed to appear two times in Python. When created, if the same key is assigned a value of two times, the latter value is remembered, as in the following example: Dict1 = { " name ": " runoob , " age ": 7, " name ": " Young rookie " } Print ( " dict1[' Name ']: ", Dict1[" name " Span style= "COLOR: #800000" > "]) If it is pycharm (Community edition v3.4.4), then Pycharm will have a hint: Dictionary contains duplicate keys ' Name ' more ...Actually no pri
Many high-end motherboards have at least one eSATA interface, convenient for users to connect external hard drives and other equipment, but I believe many people actually do not use it, so idle, then you have not thought, it is this idle eSATA interface, may inadvertently slow down your Windows 7 system startup speed? Microsoft Knowledge Base article KB2292867 that if an unused eSATA interface is installed
Many times, we use Python without having to write a program, some uncomplicated tasks, and I prefer to enter a few lines of code in IDLE (that is, interactive cue mode). However, in this mode to edit the code, there are not convenient places, the most important thing is, can not use the tab automatic completion, can not remember the last input command (no way, who let us in the shell accustomed to it).At this point, we can start the script directly us
--Open parameters, create profiles sql> show parameter resource_limit;NAME TYPE VALUE------------------------------------------------------------- ----------------Resource_limit boolean falsesql> sql> alter system set Resource_ Limit=true;System altered.Sql> Show parameter resource_limit;NAME TYPE VALUE------------------------------------------------------------- ----------------Resource_limit Boolean TRUESql> Create profile Test_profile limit Idle_time 1;Profile created.sql> alter user Scott pr
Production on Wednesday February 11 11:19:23 2015Copyright (c) 1982, Oracle. All rights reserved.Connected to the idle routine.Sql> SELECT count (1) from User_tables2;SELECT count (1) from User_tables*An error occurred on line 1th:Ora-01034:oracle Not availableProcess id:0Session id:0 Serial Number: 0Sql> Select instance_name,status from V$instance;Select Instance_name,status from V$instance*An error occurred on line 1th:Ora-01034:oracle Not availabl
Label: Today, I have encountered the problem of 11GR2 connection, before, because the application there is no in-depth inspection, did not find specific reasons, think of this version of the Oracle bug it.The last approach is to use the shell script to kill v$session.status= ' INACTIVE ' connection in the system, but this site does not deploy scripts in the operating system permissions, had to do in the database processing, fortunately we have full access to the database. This time using the Pr
It is used to determine whether the system is idle during code compilation. It must be used in both Linux and Windows. Initially, the getsystemtimes function was used for determination. Later, it was found that it could not be used in Win2000. Later, we switched to the performance API, which provides four interfaces: WMI, ODBC, registery, and PDH. Registry seems to be the best choice, but in fact there are too few materials available and it is useless
Start IDLE in Python3.4 under Ubuntu14.04 and ubuntu14.04
1. python has been installed in Ubuntu14.04 LTS. You can enter ls/usr/bin | grep python in Terminal (CTRL + ALT + T.
To run python2.7, enter python on the terminal.
To run python3.4, enter python3 on the terminal.
2. python in Ubuntu14.04 LTS does not have its own IDLE. You can enter it on the terminal:Sudo apt-get install
Most people usually execute the reload (SYS) statement just to be able to modify the Python default character set, which is the ability to call sys.setdefaultencoding (). However, if you execute reload (SYS)in idle, you will cause the next failure to execute any commands.At first there was nothing to do with the problem, and later on StackOverflow it was seen that someone had said it. This is because idle,
Label:In 10g, when ORA-00020 occurs, Sqlplus will report "connected to an idle instance" From:Sqlplus Logon Reports ' connected to a idle instance ' when ORA-20 happens in 10g (document ID 1370000.1) Say the more classic, do not translate, direct reprint:Applies To:Oracle server-enterprise edition-version:10.1.0.4 to 10.2.0.5-release:10.1 to 10.2information in this document applies to any platform.SymptomsW
Imagine that we have a PHP page a resource-intensive, so we need to check the current CPU and memory idle percentage of the system every time we execute the code in page A.We can use the following functions to solve this problem
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Get idle percent of Cpu function Get_cpufree () {$cmd = "Top-n 1-b-D 0.1 | grep ' CPU ';//Call the top co
Idle is a python Development Environment officially recommended by python. It is very convenient. It supports syntax highlighting and Automatic completion, and supports one-click operation.
Take two screenshots to see the effect. The first one is the Editor interface and the second is the running environment interface.
I have tried several other models and found that they are not easy to use.
The official Python installation package i
1. In the Ubuntu14.04 lts version, Python has been installed on its own and can be entered in terminal (ctrl+alt+t): Ls/usr/bin | grep python for viewing.If you want to run python2.7, enter it directly in the terminal: Python.If you want to run python3.4, directly in the terminal input: Python3 can.2.ubuntu14.04 Lts Python is not self-contained idle, can be entered in the terminal:sudo apt-get install idle-
Environment: win8.1+python2.7.8 First, the noun explanation: 1.IDLE: Regular programming students believe that the integrated development environment (Integrated development environment,ide) should be very familiar with, such as: Eclipse,visual studio and so on. While Idle is the basic IDE for developing Python programs (integrated development environment) with basic IDE functionality, a good choice for no
Tag: Copy encounters standard obj starting reliable work code trackReprinted from: Http://blog.csdn.net/kxcfzyk/article/details/41414247?utm_source=tuicoolutm_medium=referralMost people usually execute the reload (SYS) statement just to be able to modify the Python default character set, which is the ability to call sys.setdefaultencoding (). However, if you execute reload (SYS)in idle, you will cause the next failure to execute any commands.At first
GitHub version: Https://github.com/cncounter/translation/blob/master/tiemao_2014/CPUIdel/CPUIdel.md
The CPU is doing nothing for most of the time. Most technical experts know this fact, but we haven't discussed it in detail about how the CPU switches from idle to working and then back to idle. This mechanism becomes increasingly important for modern processors; One of the goals of today's chip design is
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