OTMA checkpoint statistics enhancement

In IMS 15.2, OTMA statistics will be collected during checkpoint.

With this enhancement, two new x'45' statistic record subtypes are added, one for Global OTMA information (x'451A') and one for OTMA Member information (x'451B’). A single x'451A' record is created for the Global information and a single x'451B' record is created for each Member. These are written with the already-existing x'45' records during checkpoint.

This enhancement provides more diagnostic information and an easier way to track OTMA statistics (such as the number of TPIPEs) to aid in fine-tuning the system (such as flood control limits).

This enhancement is added to IMS 15.2 by APAR PH45589.

Log record changes

The following log records are new or changed by this enhancement in IMS 15.2:

X'451A'
X'451B'

Documentation changes

The following table lists the publications that contain new or changed topics for the OTMA checkpoint statistics. Publications that are not impacted by this enhancement are not included in the table.

Table 1. Links to topics that have new or changed content for this enhancement
Publication	New or changed topics
Release planning	General planning information for IMS 15.2 Log record changes in IMS 15.2 IMS 15.2 enhancements IMS 15.2 Transaction Manager continuous delivery functions OTMA checkpoint statistics enhancement (new) (this topic)
Communications and connections	Open Transaction Manager Access (OTMA) Enabling and using OTMA Managing system resources and OTMA Collecting OTMA checkpoint statistics (new)
Diagnosis	SYS - System service aids Log records