VTSFIRST, VTSLAST—VTS Search Sequence

VTSFIRST and VTSLAST are two parameters that can be used to control the sequence in which tableBASE searches libraries when DataKinetics VTS product is installed.

VTSFIRST is the name of the VTS-TSR that is to be searched for tables before searching any libraries listed in the tableBASE library-list. VTSLAST is the name of the VTS-TSR that is to be searched for tables after searching any libraries listed in the tableBASE library-list.

If you wish to override the installation default for this parameter, it is strongly recommended that you use the TBOPT DD statement described later in this chapter to do so. If you set the VTSFIRST parameter by tailoring the installation parameters at installation time, problems may occur. For example, any processes that operate on the library copy of a table that is open in VTS may abend with a tableBASE error code of 3 or may return unpredictable results.

Note:
If VTSFIRST or VTSLAST is specified in the default parameters (DK1Txx34), setting VTSFIRST=0 or VTSLAST=0 in the TBOPT dataset for the job turns the respective parameters off.

The delivered defaults are VTSFIRST, VTSLAST set to null strings.

This option applies to this region’s users, regardless of which TSR they access.

This option can be specified for all except the VTS interface.

Note:
These parameters apply only if you have licensed the optional DataKinetics VTS product. Do not change the delivered defaults supplied for these parameters if you have not licensed VTS.