IMS Syntax Checker

The Syntax Checker is an ISPF application that helps you define, verify, and validate parameters and their values in the members of the IMS PROCLIB data set. Use the IMS Syntax Checker to avoid typographical and syntactical errors when modifying the parameter values for the IMS PROCLIB data set members.

Attention: The IMS Syntax Checker is stabilized. IBM will no longer invest in enhancing this feature and intends to remove the feature from all future product releases. Please refer to the IMS 15.2 announce letter.
The Syntax Checker:
  • Reads in the IMS PROCLIB data set member.
  • Displays the parameters and values.
  • Allows modification of the parameter values.
  • Helps migrate supported IMS PROCLIB data set members from one version of IMS to another.
  • Displays default values for parameters.
  • Verifies the validity of parameters and values.
  • Saves changes back to the IMS PROCLIB data set member.

The Syntax Checker supports all members of the IMS PROCLIB data set, with the exception of FRPCFG, which is not supported in IMS Version 11, and DFSVSMxx.

The Syntax Checker provides an ISPF panel where you can add or change parameter values in the members. Online help is available at the parameter level and provides assistance in moving to a new IMS release by identifying new parameters as well as any obsolete parameters from the previous release.

The Syntax Checker checks parameters for valid values and accepts only valid values. It saves the parameters to appropriate members of the IMS PROCLIB data set in the correct format. The next time the control region is started, it will use the new values.

Requirement: The IMS control region must be restarted to activate the new parameter values.

The IMS IVP contains a Syntax Checker sample application that demonstrates how to use the IMS Syntax Checker. It demonstrates how to migrate a DFSPBxxx member of the IMS PROCLIB data set from an earlier version of IMS to a later version.

Recommendations:
  • The IMS Syntax Checker does not perform security checking or bypass system security. You should protect your IMS data sets from unauthorized access by using RACF® or an equivalent security product.
  • To avoid unpredictable results with the Syntax Checker, use a screen size of 43 X 80.