Partitioned Data Set Extended (PDSE) RRI control structures are used when processing variable blocked members. When the Logical Record Length (LRECL) for the PDSE is greater than one page size (4,096 bytes), the algorithm within PDSE processing creates one RRI for each record. The maximum cell pool size is 65,536 bytes. When the cell pool is exhausted, an abend S0F4 with Reason Code 24 occurs.

The Output Delivery System (ODS) is commonly used to generate output to a member of a PDSE. When using this method for output, sites should make sure that the LRECL for the PDSE is set properly for their specific needs. For example, if it is creating HTML output, then the LRECL for the PDSE should be no more than the length of the longest record plus 50 bytes as pad space for HTML tags.

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