The TBOPT dataset can be a sequential file, a member of a data set, or, for CICS, a VSAM dataset. The TBOPT dataset can be specified for all interfaces, including VTS. The dataset must contain fixed-length 80-byte records.
The data in TBOPT uses the same parameter names and values as are coded on the TBOPTGEN macro for the defaults, with the exception of LIB-LIST. TBOPT uses LIBnn to specify tableBASE libraries to update the tableBASE Library List.
Each parameter is entered on a single line in the dataset. The parameter may begin in any column. A line beginning with an asterisk (*) denotes a comment. Comments may also be added after the parameter value. A semicolon may be used to indicate line end. Comments may follow the semi-colon.
Although each region may have defined its own TBOPT dataset, all regions can share a sequential DASD dataset, and CICS regions can share a VSAM TBOPT dataset.
A sample TBOPT dataset for a batch region follows:
- ListOptions=Y is handy for diagnostic purposes; TESTLIB is first for batch testing.
- With the exception of the LISTOPTIONS parameter, parameters must appear only once in the TBOPT file. The form KEYWORD=* indicates that the site default is to be used. The form KEYWORD=0 indicates that the default value of a parameter that takes a character string be nullified.