IMS ACB library

The Trial utility requires access to the IMS ACB library (ACBLIB) that contains the database definition (DMB) for the DEDB area to be processed.

The following DD statements are searched (in the order listed) for the IMS ACB library:

  • OLCSTAT
  • MODSTAT
  • MODSTAT2
  • ACBLIB
  • IMSACB
  • ACBLIBA
  • ACBLIBB
  • IMSACBA
  • IMSACBB

If these DD statements are not included in the JCL, the Trial utility tries to dynamically allocatE the IMS ACB library in the following order:

  1. STEPLIB/LNKLIST are searched for the OLCSTAT DFSMDA member. If found, the OLCSTAT data set is interrogated to determine which IMS ACB data set is the active current library.
  2. If OLCSTAT DFSMDA is not found, the STEPLIB/LNKLIST are searched for the MODSTAT DFSMDA member. If found, the MODSTAT data set is interrogated to determine which IMS ACB data set is the active current library.
  3. If MODSTAT DFSMDA is not found, the STEPLIB/LNKLIST are searched for the MODSTAT2 DFSMDA member. If found, the MODSTAT2 data set is interrogated to determine which IMS ACB data set is the active current library.
  4. If the IMS ACB DD statement is not present in the JCL, the STEPLIB/LNKLIST are searched for the DFSMDA member.

For more information about using the DD statements to identify the IMS ACB library, see the IBM publication IMS/ESA Administration Guide: System.

Note

The IMS/ESA release level of the ACB library must be the same as the RESLIB that is included in the STEPLIB DD statement concatenation.

 

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