Specifying a TVSAMCOM value in IGDSMSxx

You can specify TVSAMCOM values in the IGDSMSxx member of SYS1.PARMLIB, for DFSMStvs to provide automatic commit points for batch applications. The IGDSMSxx values are used if an application does not specify a TVSAMCOM parameter on the JCL EXEC statement. The default for the TVSAMCOM values in IGDSMSxx (both minval and maxval) is 0, which specifies that no automatic commits be performed.

You can specify the TVSAMCOM values by coding them directly in IGDSMSxx, or by setting them with the SETSMS command.

For details on coding the IGDSMSxx TVSAMCOM parameter, see IGDSMSxx in z/OS MVS Initialization and Tuning Reference.

For details on the SETSMS command’s TVSAMCOM parameter, see the SETSMS command in z/OS MVS System Commands.