Activating Integrity Checker

Activating Integrity Checker involves preparing the global option modules, LICON data sets, and LIU load modules, and other steps.

Before you begin

Before you activate Integrity Checker, plan an Integrity Checker configuration for your environment, as described in Planning for Integrity Checker configuration.

About this task

To activate Integrity Checker, you first prepare the global option modules and the LICON data sets. Then, by using the DBD or ACB library, register the DMB information for your databases in the LICON data set. When this registration is done, customize the LIU load modules by using either of the following methods:

  • Create an alias of the DSPCRTR0 module and add DD statements to JCL or procedures of DBRC, IMS batch application, IMS utility, and IMS Tools (recommended method).
  • Merge load modules into the IMS SDFSRESL library.

Finally, activate Integrity Checker by restarting IMS online and running IMS batch applications, IMS utilities, and IMS Tools jobs.

In both IMS batch and online environments, the steps to activate Integrity Checker are the same. These steps can be applied when you reactivate Integrity Checker after Integrity Checker is deactivated.

Procedure

To activate Integrity Checker, complete the following steps:
  1. Setting up the global option modules
    Create global option modules and, optionally, assign alias names to the global option modules. At least one global option module must be present when Integrity Checker is started because Integrity Checker uses it to obtain the name of the LICON data set that it uses.
  2. Setting up the LICON data sets
    Define and initialize LICON data sets, create RDEs to register the correct DMB information, and serialize the LICON data sets. At least one LICON data set must be present to activate Integrity Checker.
  3. Setting up RACF security
    You can optionally set up RACF® security to protect LICON data sets. If you plan to activate Integrity Checker in IMS Database Recovery Facility jobs and if DBRC command and API request authorization support is enabled with RACF, ensure that appropriate permission is given to users.
  4. Customizing LIU load modules
    Customize the LIU load modules to activate Integrity Checker.
  5. Configuring for a BPE-based DBRC environment
    To activate Integrity Checker in an IMS online environment that has a BPE-based DBRC region, you must configure the members of the IMS PROCLIB data set. This step is required only when a BPE-based DBRC is used.
  6. Verifying that Integrity Checker is activated
    IMS Library Integrity Utilities provides sample JCL for verifying successful activation of Integrity Checker. You can modify the sample JCL and then use it to ensure that Integrity Checker is running correctly.
  7. Restarting IMS online and running IMS batch application, IMS utility, and IMS Tools jobs
    When you have done all the steps, you are ready to restart IMS online to activate the DMB verification process.
Parent topic: Integrity Checker utility