Introduction › Types of Report Processing › Interleaved Report Processing

Interleaved Report Processing

In interleaved report processing, multiple reports are associated with the same SYSOUT data set. The individual records of the reports are interleaved and contain a one-character interleave identifier that is used to separate the reports.

• If a SYSOUT data set does not contain carriage controls in its record format (for example, DCB=RECFM=FB), the interleave identifier is the first character of each record.
• If a SYSOUT data set contains carriage controls in its record format (for example, DCB=RECFM=FBA), the carriage control is the first character of each record and the interleave identifier is the second character of each record.

Example

Record 1 of report 1 is written, record 1 of report 2 is written, records 2 through 8 of report 1 are written, record 1 of report 3 is written, and so on.

• The interleave identifier of all of the records in report 1 contain the same character.
• The interleave identifier of all of the records in report 2 contain the same character (but different from report 1), and so on.

Specifications are defined in the report definition attributes to identify how the reports are separated. These specifications are referred to as report identification text.

As each record is processed, it is written to the appropriate report based on its interleave identifier. The interleave identifier is removed from the record before it is written. If no appropriate report is defined, the record is discarded.