Structured data files

The structured data files contain job log SYSOUTs in a form based on the parsing of the three components of the job log, the JESJCL, the JESYSMSG and the JESMSGLG, especially the first two. User SYSOUTS are excluded from the structuring mode. Each job log stored consists of two distinct parts:
  • A number of pages, each consisting of 4096 bytes dedicated to the expanded JCL
  • A number of pages dedicated to a complete, hierarchically ordered set of structured elements for the restart and cleanup functions.
Therefore, the minimum page number used by a structured SYSOUT is 2, and the medium space usage depends on the job complexity.

To determine the optimal dimension for the structured data files, follow the instructions provided for the allocation of the unstructured data file, but take into account that the user SYSOUTs are not present. For the medium structured SYSOUTs, apply the criteria used for the unstructured job log: the larger memory requirement of the small, structured SYSOUTs, compared to the corresponding unstructured form, is balanced by the larger memory requirement of the unstructured form when the SYSOUT complexity increases.