DBIOBUF control statement

Specifies the number of tracks for the access method (VSAM or BSAM) buffers that are used for one database data set group when the database is read or written to.

The IPR Reload utility translates the specified number into the AMP= or DCB= (NCP=) parameter value internally. If the translated value exceeds the maximum allowable value for each access method, the translated value is overwritten. If you specify the AMP= or the DCB= (NCP=) parameter for the database DD statement, it precedes the DBIOBUF= specification.

This control statement is optional. The default is DBIOBUF=30 for ESDS and OSAM LDS, and DBIOBUF=15 for OSAM. In the case of HISAM, DBIOBUF=15 is applied. For OSAM LDS, DBIOBUF=15 is printed in the HPSIN Control Statements report even if DBIOBUF=30 is applied.

Read syntax diagramSkip visual syntax diagramDBIOBUF= nnn
nnn
Specifies a left-aligned decimal number in the range of 1 - 999.