Using the affinity report – IBM Transaction Server OS User Manual

Page 63

2. MATCH or STATE attributes are not generated on CREATE TRANGRP

commands, because those attributes are relevant only to the combined affinity
transaction groups. For more information about MATCH and STATE attributes,
see page 55.

3. The HEADER statement is generated so that the Builder can detect a new data

set in its input concatenation. It also gives the CICS applid, and the date and
time of the last Detector save, all obtained from the CAUCNTL control file. For
more information about HEADER statements, see “HEADER statements” on
page 58.

Once these definitions have been created, you can edit them to add extra
definitions for affinities that the Detector could not detect, or to modify definitions in
the light of further knowledge about the affinity (for example, to correct a worsened
lifetime). The report output from the Scanner may be particularly useful at this
stage. (See “Using the affinity report”.)

Using the affinity report

The affinity report has two main purposes:

1. To help you understand the affinities present in the CICS region concerned.

2. To help you modify the affinity transaction group definitions before they are input

to the Builder, if such modification is required.

You need to be able to investigate whether any application changes could reduce
the amount of affinity.

Notes:

1. Assume that the affinity information is complete.

2. Assume that any worsening of affinity relation or affinity lifetime by the Detector

does not create too pervasive an affinity (this makes dynamic routing less
effective).

* HEADER APPLID(CICSPDN1) SAVEDATE(95/11/24) SAVETIME(10:11:45);

* Generated by the CICS Transaction Affinities Utility (Reporter) on 1995/11/25

* Note: NOT suitable for input to CICSPlex SM

CREATE TRANGRP NAME(CW.00000001) AFFINITY(GLOBAL) AFFLIFE(SYSTEM

)

DESC(ADDRESS CWA

);

CREATE DTRINGRP TRANGRP(CW.00000001) TRANID(AUXX);

CREATE DTRINGRP TRANGRP(CW.00000001) TRANID(CWA1);

CREATE TRANGRP NAME(TS.00000001) AFFINITY(LUNAME) AFFLIFE(PCONV

)

DESC(TS.LOCA1

D3D6C3C1F1404040 );

CREATE DTRINGRP TRANGRP(TS.00000001) TRANID(AFTD);

CREATE DTRINGRP TRANGRP(TS.00000001) TRANID(AFTR);

CREATE DTRINGRP TRANGRP(TS.00000001) TRANID(AFTW);

CREATE TRANGRP NAME(TS.00000002) AFFINITY(LUNAME) AFFLIFE(PCONV

)

DESC(TS.LOCA2

D3D6C3C1F2404040 );

CREATE DTRINGRP TRANGRP(TS.00000002) TRANID(AFTD);

CREATE DTRINGRP TRANGRP(TS.00000002) TRANID(AFTR);

CREATE DTRINGRP TRANGRP(TS.00000002) TRANID(AFTW);

Figure 9. Sample basic affinity transaction group definitions

Chapter 6. Running the Reporter

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