Quick Beginnings for DB2 Extended Enterprise Edition for UNIX

DRDA-AS Setup for the DRDA Application Requester

This section describes the steps and conditions required to set up a connection between a DB2 Universal Database DRDA Application Server and a DRDA application requester.

Before you begin, you must determine whether your connection will use the APPC communication protocol, or the TCP/IP communication protocol.

Platform: Supported Protocols
AIX: APPC or TCP/IP
Solaris: APPC or TCP/IP

Notes:

The protocol you choose may depend on the application requester:
- APPC is supported by all application requesters
- TCP/IP is supported by only DB2 for OS/390 V5.1 and DB Connect V5.0.
APPC supports both one-phase and two-phase commit; TCP/IP currently supports only one-phase commit.
To use APPC on AIX, the optional communication support component for SNA (db2_05_00.cs.sna) must also be installed.
To use APPC on Solaris, the optional communication support component for SNA (db2cssna) must also be installed.

Setting Up DRDA-AS Functionality

This section gives an overview of the steps required to set up DRDA-AS functionality. The example shows how to set up a connection between the DRDA AS on your DB2 server and a DB2 for MVS/ESA or DB2 for OS/390 AR:

Ensure DB2 for MVS/ESA or DB2 for OS/390 is installed and operational on the host.
Refer to the DB2 Connectivity Supplement for information on the configuration required for the DB2 for MVS/ESA or DB2 for OS/390 AR.
If you use APPC, ensure VTAM is installed and operational on the host.
Refer to the DB2 Connect Enterprise Edition Quick Beginnings and the DB2 for OS/390 V5 Installation Guide (GC26-8970) manual for information on configuring the DB2 for DB2 for MVS/ESA or DB2 for OS/390 AR.
Set up the DB2 server communications, if required. (Typically, DB2 server communications are set up as part of the DB2 installation. However, complete details are provided in Chapter 23. "Setting up Communications on the Server Using the Command Line Processor". If you want to use two-phase commit, refer to the Release Notes for more information.)
Update the tables at the DB2 for MVS/ESA or DB2 for OS/390 host.
Refer to the DB2 Connectivity Supplement for more information.
Stop and restart the DB2 Universal Database instance named in DB2SERVICETPINSTANCE (that is, the instance you updated TPName in). Enter the following commands:
```
   db2stop
   db2start
```
Test the host-server DRDA connection by logging onto TSO and using DB2I/SPUFI.

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