ACCESS DF_DS_OP not working for Datacom partitioned tables

Products

• Datacom
• Datacom/AD
• Datacom/DB

Issue/Introduction

Why is the ACCESS DF_DS_OP option not working for partitioned data areas?
On non-partitioned tables, only the index datasets are being opened as documented but for partitioned tables it is opening both the index datasets and the data area datasets. 

Environment

z/OS

Resolution

The ACCESS DF_DS_OP feature was introduced by PTF RO92259. It reduces 24-bit memory in the MUF region by deferring the OPEN of a data area until the first command to add or read a row. Index areas are excluded from this processing. Partitioned data areas are also excluded due to the complex validation processing involved in opening partitioned data areas.

Additional Information

See Use ACCESS DF_DS_OP to Defer the DATA Set of a URT OPEN section on Datacom documentation