charter troubleshooting

Details of several common troubleshooting methods for routers, and details of several troubleshooting methods1. Serial Port troubleshooting When a connectivity problem occurs in the serial port, in order to eliminate the serial port fault, the show interface serial command is generally used to analyze its screen output report content and locate the problem. The s

Atitit. troubleshooting series ----- troubleshooting when apache cannot be started Atitit. troubleshooting series ----- troubleshooting when apache cannot be started You can directly use cli to start httpd and print out detailed information .. C: \ Users \ ASIMO> "C: \ wamp \ apache2 \ bin \ httpd.exe" Httpd.exe: S

Linux system-network basic configuration and troubleshooting, and linux basic configuration troubleshooting In linux, there are three types of network configuration: one is to directly implement the configuration file using command lines on the terminal, and the other is to modify the configuration file, another method is setup text interface settings. The difference is that after the configuration file is

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

Java virtual machine performance monitoring and troubleshooting tools, virtual machine troubleshooting 1. jdk command line tool 1) jps: Virtual Machine Process status Tool Jps [option] [hostid] Main parameters: 2) jstat: Virtual Machine statistics monitoring tool Jstat- Main parameters: For example, if the gc information of process 8675 is queried twice every 8675 ms, jstat-gc 1000 2 3) jinfo: Java conf

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