All z/OS Batch Runtime classes are designed to use the standard Java™ trace facilities available in the java.util.logging package. At a minimum, z/OS Batch Runtime traces entry and exit to all significant methods, all exceptions, and all significant events. Tracing is controlled through a system property or by the logging configuration file, which by default is specified in the jre/lib/logging.properties file. You can override the location of the file using the following Java system property when you invoke z/OS Batch Runtime:

java.util.logging.config.file

Use a trace to diagnose problems in z/OS Batch Runtime. Obtain the trace using the following system property:

com.ibm.zos.batch.container.BCDTraceConfig=trace-level

The property values for trace-level are ALL, which indicates that all events will be traced, or NONE, which indicates no tracing. When diagnosing problems, use a trace level of ALL.