How to log exceptions and imp logging info in Portal Service via ILogger?

Question

Hi Experts,
I m trying to use ILogger for my application.
Information about my application:
I have created a Portal Service and exposed it as a Web Service which is deployed as a PAR file on to the SAP J2EE Engine.
I need to use the Logging facility of ILogger in this Portal Service.
I have written the following code in the Init() function of the Portal Service
public void init(IServiceContext serviceContext)
       mm_logger = serviceContext.getLogger("com.persistent.pankaj");
I have put the logger.xml in the logger folder of PORTAL-INF
my logger.xml is as follows:
<Server>
<Logger name="testLog" loggerInterface="com.sapportals.portal.prt.logger.ILogger" locationName="com.sap.portal.testLog" pattern="%d # %20t %15s %m #" isActive="true">
<LoggerClass className="com.sapportals.portal.prt.logger.SimpleFileLogger" level="INFO">
<param filename="logs/com.persistent.pankaj.log" append="true">
</param>
</LoggerClass>
</Logger>
</Server>
On deploying my portal service as a web service
I m unable to get the logs.
I even dont know where will i get the log file, means wat is the exact location where i can check my log results
I m a newbie for this
Please help me out
Help will be rewarded n appreciated
-pankaj

Answer 1

Hi Pankaj,
In your init method try this code to create the logger:
ILogger logger = PortalRuntime.getLogger("testLog");
In your logger.xml the logger name was testLog and not com.persistent.pankaj so while creating logger you should use testLog in the above code.
By default all the logs are written to defaultTrace.log files, to check them read this:
Portal Runtime Logs
If you want to log in a seperate logfile then you should set a seperate log destination, which is not recommended on productive systems due to performance problems.
Also read these to know how to set seperate log destinations:
Netweaver Portal Log Configuration & Viewing (Part 3)
Netweaver Portal Log Configuration & Viewing (Part 1)
Netweaver Portal Log Configuration & Viewing (Part 2)
Regards,
Praveen Gudapati