Log4j jdbcAppender problem

Hi,
I'm having trouble configuring jdbcAppender for log4j.
I have successfully configured it by specifying a SQL statement in the properties file:
log4j.appender.JDBC2.sql=INSERT INTO TEST (TIMESTAMP, CATEGORY, ERROR_MSG) VALUES (sysdate, @CAT@, @MSG@)
The trouble with this is that I have to truncate the MSG to the ERROR_MSG field size. I do not want to use a JDBCSQLHandler class as this would mean that I will have to change the class every time the table and column names change.
Instead, I tried the alternate configuration method:
log4j.appender.JDBC2.table=test
log4j.appender.JDBC2.column=id~EMPTY
log4j.appender.JDBC2.column=timestamp~TIMESTAMP
log4j.appender.JDBC2.column=category~CAT
log4j.appender.JDBC2.column=error_msg~MSG
I will add a JDBCColumnHandler class that will do the truncating.
But this configuration is not working for me. I get the following error msg:
"log4j:ERROR Not ready to append ! Column ID is not nullable, and must be specified by setLogType() !"
The ID Column has a trigger associated with it that automatically populates it. I have come to the conclusion that only the last column definition is being configured. If I move the column=id~EMPTY to be the last column defined in the properties file, I no longer get that error msg. But no records are created, possibly because the only column defined was ID and it was configured as EMPTY and hence was ignored.
It works if I use the same configuration style in an xml file:
          <param name="table" value="test" />
          <param name="column" value="id~EMPTY" />
          <param name="column" value="timestamp~TIMESTAMP" />
          <param name="column" value="category~CAT" />
          <param name="column" value="error_msg~MSG" />
I would appreciate any help you could provide.
Cheers,
Nim

To all the JAVA GURUS,
I need to have an audit feature in my application which keeps a track(history) of changes made at any instance.
To be very precise say i have some values say 8, 5, 10, 12... if i modify any one of these value the utility should be able to trace out the changes made and other information like logger's id timestamp etc etc.... but only when the value is actually changed in a sense, suppose the value is 8 and was erased and again set to 8 then it is not considered a change...
I want to have a solution using log4j which can record these changes in Oracle database... along with additional infornmation related to the change(may be the reason for the change).
Thanks!!!
[email protected]

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I've got a question about log4j.
I'm working with an application that generates a lot
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The mechanism of the RollingFileAppender of log4j is
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e application generates a new logfile sometimes 4
times per minute. That's very annoying, so what I
would like to have is that everytime a new logfile is
created it's number is increased with 1 until a
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I've been trying to find this mechanism somewhere but
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don't use System.out.println, it always prints at server console.
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pvmk
Edited by: pvmk on May 9, 2008 12:29 AM

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Thanks a lot... I have tried and its working... I wrote :-
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Thanks!
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JMX-Log4j Appender problem

Dear listers
we wrote thefollowing code to log the loglevel's dynamically.
Following is the code
public class MyApp implements MyAppMBean {
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*477 All Attributes Not Set*
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Dear listers
we wrote thefollowing code to log the loglevel's dynamically.
Following is the code
public class MyApp implements MyAppMBean {
private static Logger logger = Logger.getLogger(MyApp.class);
public void go() throws Exception{
while(true){
logger.debug("DEBUG") ;
logger.info("INFO") ;
logger.warn("WARN");
logger.error("ERROR");
logger.fatal("FATAL");
Thread.sleep(2000);
public void setLoggingLevel(String level){
logger.info("Setting logging level to: " + level);
Level newLevel = Level.toLevel(level, Level.INFO);
Logger.getRootLogger().setLevel(newLevel);
public String getLoggingLevel(){
return Logger.getRootLogger().getLevel().toString() ;
public static void main(String[] args) throws Exception
DOMConfigurator.configure("log4j.xml");
MyApp app = new MyApp();
//Lookup for the mbean server
MBeanServer server = ManagementFactory.getPlatformMBeanServer();
//Create and register the top level log4j MBean
HierarchyDynamicMBean hdm = new HierarchyDynamicMBean();
ObjectName mbo = new ObjectName("log4j:logger=root");
System.out.println("Debug10");
server.registerMBean(hdm, mbo);
LoggerRepository r = LogManager.getLoggerRepository();
Enumeration<Logger> elogs = r.getCurrentLoggers();
Logger logger = null;
while(elogs.hasMoreElements())
//need to show the elements of teamcenter only.
logger = (Logger)elogs.nextElement();
hdm.addLoggerMBean(logger.getName());
} System.out.println(Logger.getRootLogger().getLevel().toString());
int portNumber=9999;
ObjectName htmlName = new ObjectName("log4j:logger=root,port=" + portNumber) ;
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html.setPort(portNumber);
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html.start();
app.go();
When setting the attributes for the appenders under log4j from htmladapter it gives the following message.
*477 All Attributes Not Set*
*1/8 attribute(s) were not set:*
appender%3DTaskAppender%2Clayout%3Dorg.apache.log4j.PatternLayout
Please advice how can we solve this issue ~Vilas

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Can anyone explain why every line in the log file is printed twice - this is my log4j configuration file.
thanks...
Liat
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">







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You're just begging for a [url http://en.wikipedia.org/wiki/RTFM]four-letter response :-)
http://logging.apache.org/log4j/docs/manual.html
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Log4j classpath problems

Hi.
I wrote a message driven bean and deployed it succesfully to bea. now i am trying
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I tried editing my domain's setEnv to point to weblogic81/common/lib/log4j
that didnt work
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nish

Hi.
I wrote a message driven bean and deployed it succesfully to bea. now i am trying
to incorporate log4j.
my bean compiles fine. to use log4j, i have imported org/apache/log4j/*
but when i try to deploy to bea, i get errors saying :
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at com.mgb.vem.beans.VEMMessageBean.<init>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
orAccessorImpl.java:39) ....
i have tried placing log4j.jar in my applications directory...that didnt work.
I tried editing my domain's setEnv to point to weblogic81/common/lib/log4j
that didnt work
Can someone help me ? What am i doing wrong ?
thanks
nish

HELP REQUIRED VERY URGENT!! LOG4J

if my understanding is not wrong while using LOG4J JDBCappender to write to a DataBase using configurator file(Property file), the SQL will be written in the property file and the message to be logged into the DB will be passed from the program(java file ) to the log4J system using the log.debug or any other way.
for eg: INSERT INTO JDBCTEST (Date, Logger, Priority, Message) VALUES ('%d', '%c', '%p', '%m')
here the only message passed t th eLOG4J system is the Message field value which is
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the trouble we found was in separating the single message we send to the LOG4J system
for eg: suppose if the message we send to the LOG4J system is
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i am confused about the way to split the message into say 3 parts
like
methodname=ABC()
methodname=ABC()
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Have you tried PreparedStatement?
Here's an example (from the O'REILLY Java Servlet Programming book)
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pstmt.setDouble(3, 53.43); //set TOTAL
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Hi
I have deployed multiple web applications on my weblogic (v 10.1 - JDK 1.5.0_12). I am using log4j-1.2.13.jar in a four different web applications.
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Thank you,
Ronak S.

Hi ,
Read all about your issue here :
Weblogic 10.0 and Log4j classpath problem
Issue is that the Weblogic system classloader includes log4J already..
Use "Filtering ClassLoader" a mechanism to configure deployment descriptors to explicitly specify that certain packages should always be loaded from the application, rather than being loaded by the system classloader.
see: http://e-docs.bea.com/wls/docs100/programming/classloading.html#wp1097187
Example:
Add following to your META-INF/weblogic-application.xml
<prefer-application-packages>
<package-name>org.apache.log4j.*</package-name>
</prefer-application-packages>
Exclude all library packages used within your applcation to have full control over what is used by the application.
regards,
Kris

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Hi,
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OC4J
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