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5.7 Configuring OS/2 for DataHub Support/2
5.7.1 OS/2 Host Components
This section covers all the OS/2 definitions that allow the DataHub/2 workstation
to manage OS/2 Database Manager databases. It shows how to customize the
different components used for DataHub tools conversation connectivity. Because
the OS/2-managed host must be a participant in the DRDA and the RDS network,
you should have already implemented this OS/2 host in that network. (See 3.7,
“OS/2 Definitions” on page 69.)
This section does not cover how to install the DataHub Support/2 component.
You should refer to the DataHub Support/2 Installation and Operations Guide for
more information.
The same prerequisite components are required on the DataHub Support/2 host
as on the DataHub/2 workstation. The only exception is that DataHub/2 requires
the server version of OS/2 Database Manager because the DataHub/2
workstation will need to access that machine as a client using the RDS protocol.
The DDCS/2 software is not required if this OS/2 host does not connect to a
DRDA server to transfer data from or to it (for example, the DataHub copy data
operation).
What is different from a DataHub/2 workstation are the definitions that will be
required. The DataHub/2 workstation needs to know all the hosts that are
managed by the DataHub/2 product. The OS/2-managed host needs to know
only the host(s) to which data will be transferred in a copy operation.
If you use one host as a data repository from where you copy data, all the
managed hosts have to know that repository host and need to connect to it. If
you use the OS/2 Database Manager system to capture data that eventually will
be transfered to a central site, the OS/2 Database Manager system needs to
know only one system.
OS/2 Host Component Relationship
Another difference between the DataHub/2 workstation and the DataHub
Support/2 hosts is the relationship between the different components.
Figure 146 on page 194 shows the key connectivity parameters relationship on
the OS/2-managed host. It shows only the tools conversation flow on this
workstation. To understand the RDS connectivity, you should refer to Figure 46
on page 71 and follow the Inbound request: CONNECT.
The tools conversation request that has been sent by the DataHub/2 workstation
contains the following information:
• Logical unit name
• Network ID
• Mode name to use
• Transaction program name that will process the request locally
• Data that will contain the RDB name.
The program that is associated with the transaction program name will execute
the request and connect to the OS/2 Database Manager database using the RDB
name mapping information provided in the DataHub Support/2 map file.
Chapter 5. DataHub Tools Conversation Connectivity 193