First Failure Data Capture log file purges
Overview
The first failure data capture (FFDC) feature preserves the information that is generated from a processing failure and returns control to the affected engines. FFDC logs are intended primarily for use by IBM Service.
The data is uniquely identified for the servant region that produced the exception.
FFDC files are deleted after a maximum number of days has passed. The captured data is saved in a log file for analyzing the problem.
The FFDC feature does not affect the performance of the WAS product.
To configure the number of days between FFDC log file purges...
- Edit...
$WAS_HOME/properties/ffdcRun.propertiesThere are three properties files, but only the ffdcRun.properties file should be modified.
- Set the ExceptionFileMaximumAge property to the number of days between the FFDC log file purges. The default is seven days.
- Save the ffdcRun.properties file and exit.
Results
The FFDC file management function removes the FFDC log files that have reached the maximum age and generates a message in the SystemOut.log file.
Work with troubleshooting tools