Job logs

A job log is a file that contains a detailed record of the execution details of a job. It is comprised of both system and application messages.

A job log is a file that contains a detailed record of the execution details of a job. System messages from the batch container and output from the job executables are collected. By examining job logs, you can see the life cycle of a batch job, including output from the batch applications themselves.

A job log is composed of the following three types of information:

xJCL - A job log contains a copy of the xJCL used to run the job, including xJCL substitution values.
System messages - A set of system messages that communicate the major life cycle events corresponding to the job. The following system events are recorded in a job log:
- Begin and end of a job
- Begin and end of a step
- Begin and end of a checkpoint
- Open, close, and checkpoint of a batch data stream
- Checkpoint algorithm invocation / results
- Results algorithm invocation / results
Application messages - A set of messages written to standard out and standard error by a job step program.