SAP Batch Job 备注

Relevant t-codes:
SM36: Create job
SM36WIZ: Create job with wizard
SM37: Job Overview: release scheduled job, display Job logs and steps, etc.
SM21: System Log.
ST22: ABAP runtime error, here it is used to find error info of background program
SP02: Display background report output which is outputed by WRITE statement.

Relevant FMs:
1. JOB_OPEN: Define a job
2. JOB_SUBMIT: Append program, external command or external program to the job.
          =>Job Status: "Scheduled".
3. JOB_CLOSE: Release a job. You can let the job run immediately, or run in specific start data & time, or after which event or job.
          =>Job Status: "Released"
4. SHOW_JOBSTATE: Get job status
5. BP_JOBLOG_READ: Read job log into an itab