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From "Graham Renney" <Grah...@discovery.co.za>
Subject RE: different log4J log files for same application
Date Mon, 06 Mar 2006 10:31:25 GMT

Try this:

Create 3 properties files named log4j_1211.properties or whatever name
you like and in each properties file (you will have 3 properties files
for your 3 application instances) change the path to the log file.

add -Dlog4j.configuration=log4j.properties to your command line pointing
to each properties file
e.g. 	java com.sample.MyApp
-Dlog4j.configuration=log4j_1211.properties 1211
	java com.sample.MyApp
-Dlog4j.configuration=log4j_1311.properties 1311
	java com.sample.MyApp
-Dlog4j.configuration=log4j_1411.properties 1411

This tells log4j to use that particular file for its config.

Hope this helps
Graham Renney 

-----Original Message-----
From: Bender Heri [mailto:HBender@Ergonomics.ch] 
Sent: Monday 06 March 2006 11:20
To: Log4J Users List
Subject: RE: different log4J log files for same application

This issue was discussed last week extensively. See mail archive.

> -----Original Message-----
> From: waltz co [mailto:waltz_co@yahoo.com]
> Sent: Monday, March 06, 2006 5:26 AM
> To: log4j-user@logging.apache.org
> Subject: different log4J log files for same application
> hi, 
>   i have an application that listens to a specific port to do its 
> task.
> this app runs on multiple instances by specifying different ports in 
> the argument.
>   MyApp-1211.bat contains 
>     java com.sample.MyApp 1211
>   MyApp-1311.bat contains 
>    java com.sample.MyApp 1311
>   MyApp-1411.bat contains 
>    java com.sample.MyApp 1411
>      this application logs to a file. the problem is all 3 instances 
> log into a single file, myApp.log. is there a way to tell log4j to use

> different log files, like:
> myApp-port1211.log
> myApp-port1311.log
> myApp-port1411.log
>   can you tell me how do i configure my log4j.properties file to 
> achive this? here's my current configuration file:
> log4j.rootCategory=DEBUG, R
> log4j.logger.com=DEBUG, R
> log4j.logger.com.sample.MyApp=INFO,stdout
> # stdout is console output
> log4j.appender.stdout=org.apache.log4j.ConsoleAppender
> log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
> log4j.appender.stdout.layout.ConversionPattern=%m%n
> # R is set to a log file that rolls over to a new file after the 
> MaxFileSize size.
> # One backup log file is kept
> log4j.appender.R=org.apache.log4j.RollingFileAppender
> log4j.appender.R.File=../../logs/myApp.log
> log4j.appender.R.MaxFileSize=5000KB
> #Keep one backup file
> log4j.appender.R.MaxBackupIndex=3
> log4j.appender.R.layout=org.apache.log4j.PatternLayout
> log4j.appender.R.layout.ConversionPattern=%d~%p~%c~ %m%n
> thanks.
> ---------------------------------
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