Shortly after I first came into contact with MySQL, I found that many enterprise-level functions were missing. I wanted to view the SQL statements executed by MySQL in real time, similar to the event probe in MSSQL. I searched for them online, the operation can only be written to logs. The procedure is as follows:
Set the my. ini file. The MySQL installation environment is XP SP2, which is under c: \ windo
After the Hadoop cluster enables permission control, the UI to discover the job run log cannot be accessed, and the User [dr.who] is not authorized to view the logs for application
Reason
Resource Manager ui Default User dr.who permissions are incorrectly
resolved
if the cluster uses Ambari management, in HDFs > Configurations > Custom Core-site > Add Property
hadoop.http.staticuser.user=yarn
Beaut
Select TOP query_stats.query_hash as "query hash",Sum (query_stats.total_logical_reads) as Total_logical_reads,Sum (query_stats.total_physical_reads) as Total_physical_reads,SUM (query_stats.total_worker_time)/sum (Query_stats.execution_count) as "Avg CPU Time",SUM (query_stats.execution_count) as CNT, sum (query_stats.total_worker_time) as "total CPU time",MIN (Query_stats.statement_text) as "statement text"From(SELECT qs.*,SUBSTRING (St.text, (QS.STATEMENT_START_OFFSET/2) + 1,(Case Statement_e
$ adrciadrci:release12.1.0.2.0-Production on Tue Nov - the: to: to -Copyright (c)1982, the, Oracle and/or its affiliates. All rights reserved. ADRBase="/u12/app/oracle"Adrci>Show log; ADR Home=/u12/app/oracle/diag/rdbms/ora12/Ora12:*************************************************************************Output The results to file:/tmp/Utsout_27496_14058_1.ado -- One- - the: ,:42.135000+ ,:xxCREATE TABLE t1 (IDint) -- One- - the: -:16.496000+ ,:xxdrop table T1Linux, use the VI editor to open
previous records. Run the "Who/var/log/wtmp" command to report every logon time since the wtmp file was created or deleted.
The W: W command queries the utmp file and displays information about each user in the current system and the processes it runs. Example: w (Press ENTER): 3: 36pm up 1 day, 6 users, load average: 0.23, 0.29, 0.27
User tty from login @ idle jcpu pcpu what
Chyang pts/0 202.38.68.242 PM 0.08 s 0.04 s-Bash
Ynguo pts/2 202.38.79.47 PM 0.00 s 0.14 s 0.05 W
Lewis pts/3 2
Tags: archive start way Ofo man standard output PYW war paging displayDisclaimer: The above content is reproduced, the individual to this piece of knowledge after the put together, not original, later this block has problems will continue to add.
The Tomcat logs fall into the following 5 categories:
Catalina, equivalent command line output loglocalhost, command line output log equivalent to localhostManager, managed logsHost-manager sh
How to view the update logs of Deb and RPM packages on LinuxGuideWhen a program or library is packaged into a Deb or RPM package, some metadata files are included in the package, one of which is the changelog file, which records the changes of the software package after each update. Therefore, if you want to find out what has changed your installed or updated software package, we can
[Who logged on to my computer? How to view Windows event logs?
Source: Data Security and forensics (ID: Cflab_net)
Original: Wendy
In addition to your Mac laptop, Wendy also has a Windows desktop. There is nothing to do with your laptop, but recently I feel that every time I open a Windows desktop at work, it is different from the time I left the previous day! However, it is not good to ask questions eve
Organize Linux to view system logs for some common commands
Last-a the host name or IP address from which to log in to the system, displayed on the last line.-d Specifies the record file. Specifies the record file. Converts an IP address into a host name.-F -N -R does not display the host name or IP address of the login system.-X displays information such as system shutdown, reboot, and execution
Linux log files in the/var/log directory, you can view the log files by command. 1,cat messages can view a log file. 2, to achieve real-time updates, you can view the updated data through the tail command, such as TAIL-F messages. 3,tail Command parameters: -F Loop Read -Q does not display processing information -V displays detailed processing i
changes, exit VISet NuShow line NumbersOr?Find, enter what you are looking for in/afterNwith/or, if the search is not the keyword you are looking for, press N or backwards (with/to) or forward (with?) to continue looking until you find it.For the first use VI, there are a few notes to remind:1. When you open a file with VI, you are in command mode, and you want to switch to insert mode to enter text. Toggle method: Click on the letter "i" "Command mode" to enter "Insert Mode", then you can star
Mysql has the following types of logs:
Error log:-log-err
Query log:-log
Slow query log:-log-slow-queries
Update log:-log-update
Binary log:-log-bin
Whether logs are enabled
Mysql> show variables like 'Log _ % ';
How to know the current log
Mysql> show master status;
Displays binary log data
Mysql> show master logs;
Use mysqlbinlog to
Log File Description/var/log/message system startup information and error log, which is one of the most commonly used logs in red Hat Linux/var/log/secure Security-related log information/var/log/maillog Message-related log information/var/log/cron log information related to timed tasks/var/log/spooler log information related to UUCP and news devices/var/log/boot.log Daemon starts and stops related log messagesSystem:# uname-a #
Log File Description/var/log/message system startup information and error log, which is one of the most commonly used logs in red Hat Linux/var/log/secure Security-related log information/var/log/maillog Message-related log information/var/log/cron log information related to timed tasks/var/log/spooler log information related to UUCP and news devices/var/log/boot.log Daemon starts and stops related log messagesSystem:# uname-a #
Transferred from: http://mushme.iteye.com/blog/1001478CatTail-fLog file description/var/log/message system startup information and error log, which is one of the most commonly used logs in red Hat Linux/var/log/secure Security-related log information/var/log/maillog message-related log information/var/log/cron log information related to timed tasks/var/log/spooler log information related to UUCP and news devices/var/log/boot.log Daemon starts and stop
CatTail-fLog file description1 /var/log/message and error log after system startup is one of the most commonly used logs in red Hat Linux 2 /var/ log/Secure Security-related log information 3 /var/log/maillog Message-related log information 4 / var/log/cron log information related to timed tasks 5 /var/log/Spooler Log information related to UUCP and news devices 6 /varSystem:1 # uname-a # view kernel/
ORACLE11G modified the log system, not the use of Oracle9 Alert_$oracle_sid.log log, modified to Diag Alert and Diag trace two directories to save the XML format and text format of the log, the two directories are placed in/ Oracle/oracle/diag/rdbms/rac/rac1/trace and/oracle/oracle/diag/rdbms/rac/rac1/alert directories, you can also use theSql>select name, value from v$diag_info command to query. You can also use enterprise Manager to access the Oracle Database home page and click Alert Log cont
Technical documents compiled by myself, how does the APACHE server view search engine logs? How does the APACHE server view search engine logs?
There is a code segment in httpd. conf: CustomLog logs/access. log common.
This default display method does not display the recor
Document directory
$ Git log-since = 2011-3-24-until = 2011-3-25-P
Git Quick Start
Code retrieval and global Modification
Each operation to change the code
Other common commands
Git resumes deleted files
$ Git log-since = 2011-3-24-until = 2011-3-25-P
View logs of 2011-3-25, including commit and the Code involved in modification;Refer to: Workshop
Process: Get the code → update the code to the lates
Label:ADB logcat default is not this feature, I implemented a small bash function, added to your $HOME/.BASHRC file:# 作用:能够通过进程名显示log# 用法:alogcat com.android.calendar or alogcat calendar# 当监控的进程异常退出时,需要重新运行此命令function alogcat() { OUT=$(adb shell ps | grep -i $1 | awk ‘{print $2}‘) OUT=$(echo $OUT | sed ‘s/[[:blank:]]\+/\|/g‘) # 当进程异常退出,log是通过 AndroidRuntime 输出的 adb logcat -v time |grep -E "$OUT|AndroidRuntime"}Call Method:alogcat emailEmail is replaced with your packagename, full na
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