Amending the CRITICAL property of LIBRARY resource

Specify that a LIBRARY in one or more CICS regions is critical to CICS startup.

Before you begin

  • CICS is running.
  • At least one dynamic LIBRARY is active in the CICS system.

Procedure

  1. Use the CICSPlex SM WUI, CEMT, or the SPI to change the critical status of an installed LIBRARY. This change takes effect at the next warm or emergency start, when the critical status determines whether or not CICS startup continues uninterrupted if any of the data sets in the LIBRARY concatenation are unavailable or if any other problem prevents the LIBRARY from being recovered as enabled.
  2. For a permanent change to the CRITICAL status, use CICSPlex SM BAS or CEDA to define LIBRARY definitions with the required critical status, and install the definitions at each CICS cold or initial start using CICSPlex SM BAS installation or GRPLIST installation.

Results

The CICS behavior on restart changes depending on the critical setting for the LIBRARY and the availability of the data sets in the LIBRARY.