IMS Connectivity in an On Demand Environment: A Practical Guide to IMS Connectivity

156 IMS Connectivity in an On Demand Environment: A Practical Guide to IMS Connectivity

11.1 Introduction to IMS Connect Extensions

IMS Connect Extensions provides the following features:

 Event recording and reporting

IMS Connect Extensions records details of IMS Connect internal events in journal data

sets. They give information about these main points:

– Performance and response time for IMS, IMS Connect, and user message exits

– Availability for datastore and ports

– Throughput information for different transaction types

– Resource availability

IMS Connect Extensions provides batch utilities to format and print the recorded events. It

also provides interfaces to the IMS Performance Analyzer and IMS Problem Investigator

products.

 Workload management

IMS Connect Extensions enables you to dynamically manage workloads with the following

services:

– Transaction routing

IMS Connect Extensions allows for the redirection of transactions from the original

datastore destination, as specified by the client, to another datastore.

You define the rules and logical groupings of datastores to manage the transaction

routing processing. Using this feature, you can redistribute resources without having to

change client applications.

– Workload balancing

IMS Connect Extensions enables the redirection of transactions based on the

capabilities of the individual datastores.

– Transaction pacing

IMS Connect Extensions protects datastores from surges in the numbers of

transactions by detecting the surge and responding by rejecting the incoming message

requests.

Transaction pacing allows IMS Connect Extensions to issue warning messages or to

reject transactions if predetermined, user-specified incoming transaction threshold

values are exceeded.

 Status Monitor

The IMS Connect Extensions Status Monitor displays the current activity status

information for an active IMS Connect system.

The Status Monitor presents information for the IMS Connect system, datastores, and

user message exits for various intervals over the previous hour. It also displays statistical

information across the active ports. It enables you to monitor and display IMS Connect

activity and utilization in real time.

 Security

IMS Connect Extensions enhances the security features of IMS Connect by giving an

optional verification of user access to IMS Connect.

IMS Connect Extensions performs user ID and password validation. It creates ACEE

structures for each user ID and saves them in a cache. On subsequent calls, IMS Connect

Extensions does not reissue the security call, saving valuable system resources.

Chapter 11. IMS Connect Extensions 157

IMS Connect Extensions checks whether the user ID associated with an incoming

message request is authorized to use the IMS Connect system.

 User exits management

IMS Connect Extensions supports dynamically reload, addition, deletion, disabling, and

enabling of user exits.

IMS Connect Extensions operation

This section shows the components, commands, and activation steps of IMS Connect

Extensions.

IMS Connect Extensions components

Figure 11-1 introduces the components of IMS Connect Extensions. Note that IMS Connect

Extensions runs in the IMS Connect address space.

Figure 11-1 IMS Connect Extensions components

The following list describes the IMS Connect Extensions components:

 ISPF interface

IMS Connect Extensions provides an Interactive System Productivity Facility (ISPF)

interface to set IMS Connect Extensions options, issue commands, and display IMS

Connect activity. Figure 11-2 on page 158 shows the primary menu of the ISPF panel.

Definitions

data set

Active Journal

IMS Connect Extensions

Operation

Archive

Journal

ISPF

Analysis Reports

IMS Performance Analyzer

IMS Problem Investigator

IMS Connect Extensions Utilities

IMS

Connect

Extensions

IMS

Connect