IBM Tivoli NetView for z/OS Programming: Pipes - IBM notice

Chapter 7. REXX Access to VSAM Files
The NetView program provides two command processors that access VSAM files:
v DSIVSMX defines, reads, and writes VSAM keyed files without using data
services tasks. See “DSIVSMX: Generic Access to Keyed VSAM Files from REXX
or Command Lists” for information about this command processor.
v DSIVSAM reads VSAM keyed files that are defined by NetView data services
tasks. See “DSIVSAM: Access to Keyed VSAM Files Defined by NetView DSTs”
on page 342 for information about this command processor.
The standard way to use both of these command processors is on a NETVIEW
pipe stage. For more information about the NETVIEW stage, see “PIPE NETVIEW
” on page 167.
DSIVSMX: Generic Access to Keyed VSAM Files from REXX or
Command Lists
The DSIVSMX command processor can define, read, and write VSAM keyed files
directly from REXX without using data services tasks. This enables the
implementation of VSAM applications, including end-use application development
in REXX (in conjunction with the pipeline facility), and intensive VSAM
diagnostics.
The DSIVSMX command provides REXX access to keyed VSAM files and to
IDCAMS, the VSAM Access Method Services utility.
Samples CNMS8013 through CNMS8015 and CNMS8017 through CNMS8020
illustrate the use of the DSIVSMX command.
See IBM Tivoli NetView for z/OS Command Reference Volume 2 (O-Z) or the NetView
online help for more information about the DSIVSMX command.
Using DSIVSMX with Alternate Index VSAM Files
DSIVSMX can be used with alternate index VSAM files. Alternate index VSAM
files can be defined, accessed, and deleted.
Defining a VSAM File with Alternate Index
When setting up an alternate index, follow these steps to build the base and index:
1. Define the BASE cluster, using DSIVSMX IDCAMS with the VSAM DEFINE
CLUSTER statements.
2. Load the BASE cluster with the necessary information (prime it), using
DSIVSMX PUT requests.
3. Define the AIX cluster, using DSIVSMX IDCAMS with the VSAM DEFINE
CLUSTER statements.
4. Define the PATH for the base and AIX clusters, using DSIVSMX IDCAMS with
the VSAM DEFINE PATH statements.
5. Build the Alternate Index cluster, using DSIVSMX IDCAMS with the VSAM
BINDEX statements.
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