4087x

: Track how often checkpoints occur and ensure active datasets are being logged correctly.

These records allow system administrators and performance analysts to: : Track how often checkpoints occur and ensure

: Tools like MXG use these identifiers to convert raw mainframe log data into readable reports for capacity planning. formats.sas.txt - Merrill Consultants In the context of IMS log records and

Within the Merrill Consultants documentation for VMAC28 (a format for processing IMS log records), it is categorized alongside other system checkpoint markers such as: : Checkpoint DMCB/DMAC '4085'X : Checkpoint MTO Buffer '4086'X : Checkpoint DMHR/DEDB '4087'X : Checkpoint ADSC Functional Role in Mainframe Systems

: In the event of a system failure, these log records provide the "snapshot" necessary for the system to restart and restore data integrity.

In the context of IMS log records and system monitoring, this code is a hexadecimal representation used by mainframe performance management tools to identify a particular type of system checkpoint. Technical Definition

Specifically, is the identifier for a Checkpoint ADSC (Active Dataset Control) record. This record is part of the system's logging mechanism that tracks the state of active datasets during a checkpoint process. Functional Role in Mainframe Systems