avast troubleshooting

Chapter 7 JVM performance monitoring and troubleshooting tools (1), jvm troubleshooting 1. Locate System Problems Basis GC log Heapdump/hprof File) Thread snapshot (threaddump/javacore file) Running log Exception Stack Tools used for analysis Jps: displays all JVM processes in a specified system. Jstat: Collects JVM running data. Jinfo: displays JVM configuration informat

A case for troubleshooting slave database latency in MySQL: mysql troubleshooting When a customer is inspected today, a core of the cpu of mysqld occupies 100% in the case of no business in the slave database. There is no SQL statement for querying the slow query of the master database.It can be said that the typical single-process replication causes a cpu to be fully occupied. If you know the reason, you c

Record the troubleshooting and resolution of a deadlock, and record the troubleshootingThis is a sad reminder. I remember last week's busy schedule. The goal is to modify some bugs in the code left by another team. This project is used for OLAP analysis, the Logic Server is mainly responsible for metadata operations, such as information displayed on the page, and the Analysis Server is responsible for executing query statements, because they used mond

One troubleshooting-when the disk clearly has space, but it cannot be written in, the disk will be troubleshooting One week at work today, I finally started to operate and maintain the platform and encountered the first practical error. Today, I encountered an alarm saying that the disk cannot be written and I checked the disk space. When df-h is used to find that the disk is not fully written, there is

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

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

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

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