Log4J fileappender doesn't roll on Websphere 7

Question

My current project taking Log4j for logging output but when it is deployed on websphere 7 it seems the logging file is always occupied by the server hence Log4J cannot close it and open a new file. Current log file can expand to 1.5 Gb if on DEBUG level. I went through a few online tutorials but didn't get a solid solution. So I open this thread for any opinion or experience on making log4J works on WS 7.

Current log4J is on 1.2.15, and the project is a plain POJO/JSP application without other containers(like Spring, I do have another project with same issue on Spring/tomcat, will open in another thread). And here is the log4j.properties:

log4j.rootCategory=INFO, ROL
#
# Rolling File Appender
#
log4j.appender.ROL=org.apache.log4j.RollingFileAppender
log4j.appender.ROL.Encoding=UTF-8
log4j.appender.ROL.File=C\:\\Logs\\AppOut.log
log4j.appender.ROL.MaxFileSize=10000KB
log4j.appender.ROL.MaxBackupIndex=10
log4j.appender.ROL.layout=org.apache.log4j.PatternLayout
log4j.appender.ROL.layout.ConversionPattern=%d -- %p -- %c -- %m%n

But this configuration just doesn't make log file roll over.

UPDATE:

It seems like each time when I try to remove the log file after stop the application(not the server), it is always saying "the file is opened by another application" which only refers to Websphere. I can guarantee that there is no other application is opening the log file. The only way to release lock on it is stop the application server .

Thanks in advance for any ideas.

Answer 1

we use was 7 (with portal server 6.1 on top). (We wrap our calls to the logger using the sl4j lbrary, but I don't think that is relevant to the problem here). can't really see any major difference, other than we don't set the root category, and we explicitly set the additivty to false.

Below is part of our config (showing just one of our appenders) which works just fine and rolls the logs every 10MB as expected. Perhaps it's something configured in WAS itself - I'm not a WAS admin expert and didn't install WAS myself but could ask one of our admins on Monday if you haven't solved it.

log4j.logger.com.xxx.protection=TRACE, A1
log4j.additivity.com.xxx.protection=false

# other appenders excluded

log4j.appender.A1=org.apache.log4j.RollingFileAppender
log4j.appender.A1.File=${LOG_ROOT}/applLogs/ui_and_business_logic.log
log4j.appender.A1.MaxFileSize=10MB
log4j.appender.A1.MaxBackupIndex=10
log4j.appender.A1.Append=true
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%d %p %t %c MSG: %m%n

Answer 2

我认为您已经看过这篇文章-http: //www.ibm.com/developerworks/websphere/techjournal/0802_supauth/0802_supauth.html