An Introduction to IMS: Your Complete Guide to IBMs Information Management System

The Database Recovery Control (DBRC) facility includes the IMS functions that:

  • Ensure IMS system and database integrity.

  • Control log and database recovery.

  • Control access to databases by various IMS subsystems sharing those databases.

Related Reading: This chapter contains an overview of DBRC and briefly describes how to use it. For the details about DBRC, see IMS Version 9: Database Recovery Control (DBRC) Guide and Reference.

In This Chapter:

  • "Overview of DBRC" on page 376

  • "DBRC Tasks" on page 376

  • "DBRC Components" on page 377

  • "When Should You Use DBRC?" on page 378

  • "Communicating with DBRC" on page 379

  • "DBRC Functions" on page 381

  • "Overview of the RECON Data Sets" on page 395

  • "Defining and Creating the RECON Data Sets" on page 398

  • "Initializing the RECON Data Sets" on page 399

  • "Allocating the RECON Data Sets to an IMS System" on page 400

  • "Maintaining the RECON Data Sets" on page 401

  • "Reorganizing RECON Data Sets" on page 403

  • "Recreating the RECON Data Sets" on page 404

  • "Summary of Recommendations for RECON Data Sets" on page 404

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