OADSPR control statement

Specifies whether IMS HP Load reduces the usage of data space when processing the overflow area by using the High Performance I/O driver or by using an OVERFLOW DD. This specification is valid only for HDAM and PHDAM databases.

This control statement is optional. If you do not specify this control statement, OADSPR=NO is used.

Read syntax diagramSkip visual syntax diagramOADSPR= NOYES
YES
Reduces the usage of data space when processing the overflow area.
NO
Does not reduce the usage of data space when processing the overflow area.
Notes:
  • If you specify both OADSPR=YES and HPIO=YES, IMS HP Load attempts to reduce the usage of data space by using the High Performance I/O driver. It can also reduce the time for reload except when IPR Type-A Image Copy processing is used for a (P)HDAM that has extremely large overflow area.
  • If you specify both OADSPR=YES and HPIO=NO, IMS HP Load attempts to reduce the usage of data space by using an OVERFLOW DD as a temporary data set. If the DD statement is not specified in the JCL, IMS HP Load attempts to allocate it dynamically on a direct-access device. For details, see JCL requirements.
  • This function might not be able to reduce the usage of data space depending on the database. Because IMS HP Load keeps the data in a data space until the information for pointers in the block are resolved.
Tip: The default value of the OADSPR control statement can be changed. For details, see Setting installation default options.