Oracle lock table troubleshooting example: Oracle lock table troubleshooting
One time a developer directly runs the delete table operating system on the database server during peak hours, resulting in no response for a long period of execution. Then, the SQLPLUS client is closed and the delete statement is run again, this causes the database to run slowly.The query operation knows that it is caused by the l
The local computer fails to start Apache troubleshooting, Apache fault handling
Recently, due to work needs, to learn the basic programming of PHP, so learning to set up PHP working environment.
However, as described in the textbook, after the installation of WMAP, has been unable to run successfully. It was found that Apache was not running. Go to the Apache option in WMAP to select Start but not start.
After the expert guidance, summed up the follo
GBK Chinese, but still in the compilation process is used garbled build② picture chromatic aberration (Srgb/argb/cmyk) and so on will cause compile error③ very grateful to the Teaching assistant's patient guidance, not only learned the knowledge also learned the open-source cooperative attitude, all day down the teaching assistants are all the way together to discuss, solve problems, not too many students annoying small problems, ta's enthusiasm and patience let me very touched. It's lucky to m
Hardware troubleshooting
1. Check your power cord again is not plugged well is very necessary, host, monitor! And make sure your power is unblocked.
2. Disassemble the host to see if your memory stick is plugged in, or unplug the memory strips, and try
3. The discharge of your computer, (unplug the power cord, press the power-on key)
4. Discharge Your Bois!
5. Make sure your computer is equipped with an operating system!
Add: Software
Although the Linux system is very powerful, stable, but we use the process, if the human operation is not appropriate, will still affect the system, and may even make the system does not boot, unable to run services and other problems. Then this blog post summarizes some common troubleshooting methods, but it is impossible to cover all, can only continue to supplement, update.first, the administrator forgot the password(1), restart the computer, enter
Software TestingMedium,Troubleshooting(That isDebugging. The test is successful because an error is found. Identify the cause and location of the error based on the error signs, and correct the error mainly relies on the troubleshooting technology. 1. troubleshooting Process As shown in, the troubleshooting process b
and the expansion of college enrollment, network users are increasing, and the problems brought by network failures are becoming more and more prominent. Therefore, to ensure the stable operation of campus network, familiar with a variety of possible points of failure, rapid positioning and troubleshooting, to ensure the normal teaching, research and management of the university is of great significance.
1 Campus network operation and Maintenance ov
Summary of IE solution (troubleshooting)
Author: anonymous author: network updated on:
Summary of IE solution (troubleshooting) 1. Exclude garbled web pages. Some friends asked me why I often see garbled characters on the webpage when I access the internet? In fact, there are two kinds of problems: one is caused by impro
The superior performance and price of vswitches are greatly reduced, promoting the rapid popularization of vswitches. Network administrators often encounter a variety of switch faults at work. How can they quickly and accurately find and eliminate faults? This article briefly introduces common fault types and troubleshooting steps. As vswitches are widely used in the company's network, from the low end to the middle end, from the middle end to the hig
The superior performance and price of vswitches are greatly reduced, promoting the rapid popularization of vswitches.
Network administrators often encounter a variety of switch faults at work. How can they quickly and accurately find and eliminate faults? This article briefly introduces common fault types and troubleshooting steps. As vswitches are widely used in the company's network, from the low end to the middle end, from the middle end to the hig
A new multi-step troubleshooting solution for vro troubleshooting, as the name suggests, is to solve common router faults. This article also describes the most popular diagnostic procedures for wireless routers on the market.
Network diagnosis is an important technical task that manages and makes good use of the network to maximize its role. This article briefly describes the hierarchical diagnosis technolo
1. Troubleshooting)Here we will introduce the hardware and software problems that may occur when using vrouters. During the networking process, such as X.25, FR, DDN, DDR, TCP/IP, problems encountered in different network environments such as interconnection with IBM large hosts and solutions .? Troubleshooting tool? What is the Troubleshooting of TCP/IP connecti
In actual work, we always encounter problems in the production environment. If any problem occurs. And the business is very important. Business needs to restore the system to normal in the shortest time, which puts a lot of pressure on people. Under this pressure, it may make me confused. So how can we quickly and effectively troubleshoot faults? The problem is endless. I personally think that only the thought of troubleshooting and thinking can help
As we all know, during the installation and use of computers, we must inevitably encounter some system faults, such as the failure to start or print the system due to software reasons ), how to quickly and efficiently troubleshoot these faults has become one of the topics of interest to the majority of users. In the past, the operating system did not provide the function of eliminating system faults. When encountering problems, the majority of users can only find a solution by themselves, or see
Troubleshooting vswitch faults: for power supply faults and port faults, in the Internet era, you will often encounter troubleshooting vswitch faults. The following describes how to resolve vswitch faults, including how to solve power supply faults.
No matter how good the performance of a switch device is, there will be potential faults. Just like people, no matter how healthy they are, there will always be
In the face of more and more complex network applications, many networks will encounter one or more faults. Now, let's analyze the DNS troubleshooting process. This section describes the precautions, troubleshooting procedures, and detailed troubleshooting steps for configuring DNS in a typical DNS networking environment.
DNS
I believe many people are familiar with tracing network faults with traceroute ip addresses. This is based on the IP address (Layer 3) route tracking, and is suspected to be used to eliminate most network faults. The layer-2 route tracing is very similar to the layer-3 route tracing. One essential difference is that Layer 2 routing tracking is based on MAC addresses and solves Layer 2 connection faults. In determining the data transmission path in the second-layer topology, this second-layer rou
This article is a computer Quality Pre-sale recommendation >>>> MySQL Troubleshooting guideMySQL Troubleshooting reference books every DBA and database support person should read the booksContent IntroductionThe MySQL Troubleshooting guide, written by Oracle's technical support engineers, explains in detail the knowledge of MySQL fault diagnosis and processing, a
Tags: set process proportional outage-o gen BSP Tput LookupOriginal: http://www.cnblogs.com/Security-Darren/p/4700387.htmlA network failure to troubleshoot a Linux system.Network troubleshooting is generally a certain way of thinking and order, in fact, the idea of troubleshooting is based on the specific problem-by-paragraph troubleshooting may occur, the final
To reduce design complexity and enhance versatility and compatibility, computer networks are designed as hierarchies. This hierarchical system enables a variety of different hardware systems and software systems to easily connect to the network. When analyzing and troubleshooting network faults, administrators should make full use of the layered features of the network to quickly and accurately locate and eliminate faults. However, in the actual
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