1, Android reasonable management log logs, in the development of the time to print out, at the time of release, all the log log off the method as follows: In order to facilitate the operation of the log need to customize a logger class and then develop all the log printing u
Access to the site today, the database link error, and then want to restart the LNMP environment, found that the MySQL service can not be properly shut down, recall that the server has been running smoothly for 4 months, the configuration should not have any problems, so think, may be the data disk space used up, sure enough. Just think of the log file should be caused, and finally check to MySQL log file o
What is the slow query log for MySQL? Definition: MySQL provides a logging function to record the MySQL corresponding time over the long_query_time value of the SQL statement, long_query_time default value of 10 seconds, the corresponding time of more than 10 seconds of SQL will be recorded in the log.
1, check the status of slow log function, slow
Tags: logrotate rotate log files mongodb logs switchMongoDB Log switch (Rotate log Files) combat1. Under MONGO Shell, execute the logrotate command:Use admin db.runcommand ({logrotate:1})Need to run on Mongos,mongod,config server.Variants of the method:A) run under the Unix shell:MONGO Localhost/admin–eval "Dbo.runcommand ({logrotate:1})"b) run under the Unix she
Mysql Log, where is the mysql Log File?
Mysql logs are classified into binary logs, error logs, general query logs, and slow query logs. Binary log: records database operations in the form of binary files, but does not record query statements. Error Log: records information such as mysql server startup, shutdown time,
When the hardware is maintained, someone accidentally disconnected the power supply from the production library, and after restarting the enclosure and server, an Oracle 10g 10.2.0.4 startup error message appears:
The code is as follows
1
Database loading complete.ORA-01122: Database file 1 validation failedORA-01110: Data file 1: ' E:\ORACLE\PRODUCT\10.2.0\ORADATA\ORCL\SYSTEM01. DBF 'ORA-01207: File newer than control file-old
Automatic logs for nginx containing variables:Note the following when using automatic logs:1. nginx log directory permission. Take my installation path as an example:/usr/local/nginx. Then, my log directory is in/usr/local/nginx/logs; the inclusion variable is used.For automatic logs, nginx users in this directory must have the write permission. Otherwise, logs cannot be generated. By default, the nginx run
Apache Log scrolling configuration in windows solves the problem of too many log files. By default, apache logs are written into two log files, namely, error. log and access. log, as files continue to expand, when 2 GB or more, the apache service itself may have some unstabl
The log module of CI is implemented and used as a library.(a) How to use(a) configuration in applicatin/environment/config/config.php
Log_threshold: Writable log level thresholds. Array (' ERROR ' = ' 1 ', ' DEBUG ' = ' 2 ', ' INFO ' = ' 3 ', ' all ' = ' 4 '). Levels that are less than or equal to the threshold can be written. With this evironment, different levels of logging can be recorded in dif
After SQL server log transfer is configured, the SQL server log is very large because the backup database is large and the time is frequent. For example:
Because we already have log shipping monitoring, this backup information is basically useless to us. Is there any way to make the Information Department appear in the database error
Things have been busy for a while, and recently a department change is going to be done for new projects. It's exciting to learn a lot of new knowledge. Today after work back to check the VPS status, found that the VPS space only 1G more! The first reaction was invaded, but looked at the log and did not find anything unusual login, plus usually the basic private key is password-free login vps, do not invade may not be very large. Then I am very puzzle
Java log Design Practice (2), java log
Several considerations during the design phaseUse Spring Log4jConfigListener to dynamically adjust the Log Level
Add the following content to the corresponding web. xml location:
Note]
1.Do not setLog4jConfigLocationSpecified// WEB-INF/classes/log4j. properties
When log4jConfigLocation is specified as/WEB-INF/classes/l
Simple Log writing function implemented by php, and php log function. Simple Log writing function implemented by php. This document describes the simple log writing function implemented by php. Share it with you for your reference. The specific implementation method is as follows: simple
IIS log analysis is our Asp.net
Program Personnel must understand the knowledge, because the website we develop is based on the IIS server. When Website access is slow
Code In addition to the optimization program code, IIS logs are another way to find slow websites!
The location where iis log files are stored. The default location is (c: \ windows \ system32 \ logfiles). In the IIS information service
MySQL bin-log analysis method, mysqlbin-log
Author: Echo Chen (Chen Bin)
Email: chenb19870707@gmail.com
Blog: Blog.csdn.net/chen19870707
Date: September 9th, 2014
Some time ago, when the game server was suspended, it was always slow. Fortunately, all the game databases opened bin-log, therefore, you can use bin-log
The most recent projects are the archiving of data, pulling data from one database to another, resulting in a very large log file for the new database, or the fact that the database is being used to increase the log files, which can degrade the performance of the database and consume a lot of disk space. So I want to delete the log file. The simplest is to detach
log_rotater.sh
#!/bin/sh
# writed by Yijian on 2012/7/22
# This script feature:
# 1 Implementation of a common log scrolling by size
# 2 requires a log file extension of ". Log", otherwise please modify the code slightly
# 3 supports the processing of log files in multiple directories, and if this function is req
Tags: bar view view Ted Open OSC Soc Bash metaObjectiveIn development, high-performance programs also include high-performance queries, so optimizing SQL is also one of the necessary skills for programmers. To optimize, you must have slow logging to know which queries are slow, and then reverse the changesSlow log setup mode
Write file
Write to Database
Practice how to: Write a fileEdit my.conf to modify Log_slow_queries's
After we develop the program, if there are some problems need to debug the program, the log is necessary, this is our analysis program problems commonly used means.
Log usage
Log analysis, is based on the output of the log information, analysis of the potential problems of mining, we use fmt.Println series functions ca
ubuntu/var/log/Individual log filesThis article briefly introduces the log files under the ubuntu/var/log/, which makes it easy to query the corresponding log when errors occur./var/log/alternatives.log-Update replacement inform
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