Need help with log4j logging tool (org.apache.log4j.*) to log into database

Question

Hi,
I need help with log4j logging tool (org.apache.log4j.*) to log into database using JDBCAppender. Have look at my logger code and corresponding log4j.properties file stated below. I'm running this program using Eclipse IDE and it's giving me the following error (highlighted in red) at the end:
log4j: Parsing for [root] with value=[debug, stdout, Roll, CRSDBAPPENDER].
log4j: Level token is [debug].
log4j: Category root set to DEBUG
log4j: Parsing appender named "stdout".
log4j: Parsing layout options for "stdout".
log4j: Setting property [conversionPattern] to [%x %d{HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n].
log4j: End of parsing for "stdout".
log4j: Parsed "stdout" options.
log4j: Parsing appender named "Roll".
log4j: Parsing layout options for "Roll".
log4j: Setting property [conversionPattern] to [%x %d{yyyy.MM.dd HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n].
log4j: End of parsing for "Roll".
log4j: Setting property [file] to [HelloWorld.log].
log4j: Setting property [maxBackupIndex] to [10].
log4j: Setting property [maxFileSize] to [20KB].
log4j: setFile called: HelloWorld.log, true
log4j: setFile ended
log4j: Parsed "Roll" options.
log4j: Parsing appender named "CRSDBAPPENDER".
{color:#ff0000}
Can't find class HelloWorld{color}
import org.apache.log4j.*;
public class HelloWorld {
static Logger log = Logger.getLogger(HelloWorld.class.getName());
public static void main(String[] args) {
try{
// Now, try a few logging methods
MDC.put("myComputerName", "Ravinder");
MDC.put("crsServerName", "ARNDEV01");
log.debug("Start of main()");
log.info("Just testing a log message with priority set to INFO");
log.warn("Just testing a log message with priority set to WARN");
log.error("Just testing a log message with priority set to ERROR");
log.fatal("Just testing a log message with priority set to FATAL");
catch(Exception e){
e.printStackTrace();
------------------------- log4j.properties file ------------------------------
#### Use three appenders - log to console, file and database
log4j.rootCategory=debug, stdout, Roll, CRSDBAPPENDER
log4j.debug=true
# Print only messages of priority WARN or higher for your category
# log4j.category.your.category.name=WARN
# Specifically inherit the priority level
# log4j.category.your.category.name=INHERITED
#### stdout - First appender writes to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%x %d{HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n
#### Roll - Second appender writes to a file
log4j.appender.Roll=org.apache.log4j.RollingFileAppender
##log4j.appender.Roll.File=${InstanceName}.log
log4j.appender.Roll.File=HelloWorld.log
log4j.appender.Roll.MaxFileSize=20KB
log4j.appender.Roll.MaxBackupIndex=10
log4j.appender.Roll.layout=org.apache.log4j.PatternLayout
log4j.appender.Roll.layout.ConversionPattern=%x %d{yyyy.MM.dd HH:mm:ss,SSS} %5p [%t] (%c:%-4L %M) - %m%n
#### CRSDBAPPENDER - third appender writes to the database
log4j.appender.CRSDBAPPENDER=org.apache.log4j.jdbc.JDBCAppender
log4j.appender.CRSDBAPPENDER.Driver=net.sourceforge.jtds.jdbc.Driver
log4j.appender.CRSDBAPPENDER.URL=jdbc:jtds:sqlserver:/arncorp15:1433;DatabaseName=LOG
log4j.appender.CRSDBAPPENDER.USER=sa
log4j.appender.CRSDBAPPENDER.PASSWORD=p8ss3doff
log4j.appender.CRSDBAPPENDER.layout=org.apache.log4j.PatternLayout
log4j.appender.CRSDBAPPENDER.sql=INSERT INTO LOG (computername, crsservername, logtime, loglevel, threadname, filename, linenumber, logtext) VALUES ('%X{myComputerName}', '%X{crsServerName}', '%d{dd MMM yyyy HH:mm:ss,SSS}', '%p', '%t', '%F', '%L', '%m')
#log4j.appender.CRSDBAPPENDER.sql=INSERT INTO LOG(COMPUTERNAME,CRSSERVERNAME,LOGTIME,LOGLEVEL,THREADNAME,FILENAME,LINENUMBER,LOGTEXT) select host_name(),'${CRSServerName}${InstanceName}','%d','%5p','%t','%F','%L','%m%n'
#log4j.appender.CRSDBAPPENDER.sql=INSERT INTO LOG (computername, crsservername, logtime, loglevel, threadname, filename, linenumber, logtext) VALUES ("%X{myComputerName}", "%X{crsServerName}", "%d{dd MMM yyyy HH:mm:ss,SSS}", "%p", "%t", "%F", "%L", "%m")
------------------------------- end of log4j.properties file ------------------------------
Here is the directory structure of my program. My log4j.properties file and HelloWorld.class file are residing in folder HelloWorld\bin.
HelloWorld\bin
HelloWorld\lib
HelloWorld\src
Please note - The same program works fine for console and file appender when I comment the database appender part in my properties file.
Thanks
Ravinder

Answer 1

try this :
log4j.appender.PROJECT.Append=false