Log Size

[stez192]

Hello,

I have an apllication which is longing a high amount of data and therefore the log become unreadable/unsearchable in a couple of hours. Can anyone help me on how to split the log in variuos log files ever 2 or three hours?

Any other solution/proposal are welcome.

thanks

[jaikiran]

Are you using log4j? If yes, then log4j allows you to configure the log file sizes so that once a specified size is reached the file is rolled over and a new file is created. Maybe this might help:

http://logging.apache.org/log4j/docs/manual.html

[stez192]

Thanks, I am using log4j.xml

can you please advise me how to insert this in the XML structure?

log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=1

[jaikiran]

Here's the xml configuration:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">

<!-- ===================================================================== -->
<!-- -->
<!-- Log4j Configuration -->
<!-- -->
<!-- ===================================================================== -->

<!-- $Id: log4j.xml,v 1.13.2.8 2003/09/23 14:16:27 slaboure Exp $ -->

<!--
 | For more configuration infromation and examples see the Jakarta Log4j
 | owebsite: http://jakarta.apache.org/log4j
 -->

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">

 <!-- ================================= -->
 <!-- Preserve messages in a local file -->
 <!-- ================================= -->

 <!-- A size based rolling appender -->
 <appender name="FILE" class="org.apache.log4j.FileAppender">
 <param name="File" value="D:/log/myLog.log"/>
 <param name="Append" value="false"/>
 <param name="MaxFileSize" value="50MB"/>
 <param name="MaxBackupIndex" value="100"/>

 <layout class="org.apache.log4j.PatternLayout">
 <param name="ConversionPattern" value="%d{ISO8601} [%X{TAPUSERNAME}] %-5p [%c] %m%n"/>
 </layout>
 </appender>



 <!-- ============================== -->
 <!-- Append messages to the console -->
 <!-- ============================== -->

 <appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
 <param name="Target" value="System.out"/>
 <param name="Threshold" value="INFO"/>

 <layout class="org.apache.log4j.PatternLayout">
 <!-- The default pattern: Date Priority [Category] Message\n -->
 <param name="ConversionPattern" value="%d{ISO8601} %-5p [%c{1}] %m%n"/>
 </layout>
 </appender>

 <!-- ================ -->
 <!-- Limit categories -->
 <!-- ================ -->


 <category name="org.myapp">
 <priority value="DEBUG" />
 <appender-ref ref="FILE"/>
 </category>




 <!-- ======================= -->
 <!-- Setup the Root category -->
 <!-- ======================= -->

 <root>
 <appender-ref ref="CONSOLE"/>
 </root>

</log4j:configuration>

You can set the "MaxFileSize" and "MaxBackupIndex" and any other attribute values depending on your needs

[stez192]

OK, thanks a lot, this should work

[jaikiran]

Just a small change. There was a mistake in the previous post:

<appender name="FILE" class="org.apache.log4j.FileAppender">

This should have been:

<appender name="FILE" class="org.apache.log4j.RollingFileAppender">

[jaikiran]

Uuuhh... some of the contents got eaten up in my previous post. Here's the final one.


Change

<appender name="FILE" class="org.apache.log4j.FileAppender">

to

<appender name="FILE" class="org.apache.log4j.RollingFileAppender">

Apologies for all the mess.