Specifications for OSAM sequential buffering

The SBONLINE control statement allows use of OSAM Sequential Buffering (SB) in an IMS DB/DC or DBCTL environment.

For information about specifying the SBONLINE control statement, see DFSVSMxx member of the IMS PROCLIB data set.

One or more of the following factors controls the use of SB by a particular application program or utility:

• PSBGEN
• Control statements in the //DFSCTL data set
• An SB Initialization exit routine

Related reading: For more information, see IMS Version 15.4 Database Administration.

See also Specifying sequential buffering control statements for more information about how to request use of SB through control statements in the //DFSCTL data set of the IMS batch region or IMS dependent online region.