IBM OS manual Pausing the collection of affinity data, Resuming the collection of affinity data

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Each time the Detector is started, a new data space is created. For help with calculating the likely data space storage requirement, see ªEstimating the size of the MVS data space and VSAM ®lesº on page 21. You specify this size on the Detector options screen, CAFF02. You can also specify that data from affinity data VSAM ®les (for example, from previous Transaction Affinities Utility runs) is to be loaded into the data space when it is created. For more information about the CAFF02 options screen, see ªChanging the Detector optionsº on page 36.

Note: If there are a large number of data records to be loaded into the data space when it is created (for example, from previous Transaction Affinities Utility runs), the CAFF screen may be frozen for some appreciable time, until the records have been loaded.

Pausing the collection of affinity data

When you can pause affinity data collection

You can pause the collection of affinity data only when the Detector is currently running.

To pause the collection of affinity data, use one of the methods shown in Table 4.

Table 4. Methods for pausing data collection by the Detector

Where used

Command or function key

 

 

Control display, CAFF01

F7 function key

 

 

3270 terminal

CAFF PAUSE

 

 

Console

F cicsjob, CAFF PAUSE „1…

 

 

Application program

EXEC CICS START TRANSID('CAFF') FROM('PAUSE')

 

 

Note:

„1… cicsjob is the name of your CICS startup job.

Using one of the methods listed in Table 4 causes the Detector to stop collecting data until you are ready to resume. The data already collected remains in the data space, and can be saved to the affinity data VSAM ®les when the Detector is paused. (You can specify that data be saved when the Detector is paused on the CAFF02 options screen, as described in ªChanging the Detector optionsº on page 36.)

Resuming the collection of affinity data

When you can resume collecting affinity data

You can resume collecting affinity data only when the Detector is currently paused.

To resume collecting affinity data, use one of the methods shown in Table 5 on page 35.

34 CICS Transaction Affinities Utility Guide

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Contents IBM Page IBM Third edition March Contents Appendix A. Details of what is detected Reporter output Scanner output Examples Vi Cics Transaction Affinities Utility Guide Vii Trademarks Preface Argument zero Cics books for Cics Transaction Server for OS/390 BibliographyCics Transaction Server for OS/390 CICSPlex SM books for Cics Transaction Server for OS/390 Other Cics booksSummary of changes Xiv Cics Transaction Affinities Utility Guide Introducing transaction affinities Affinities, see the Cics Application Programming GuideTarget region Requesting regionRouting region Transaction affinities Benets of dynamic routingWhat does dynamic routing cost? Affinity relations Inter-transaction affinityTransaction-system affinity GlobalAffinity lifetimes Cics programming techniques for transaction affinitySuspect programming techniques Safe programming techniquesUnsafe programming techniques Avoiding the effects of transaction affinityProtecting applications from one another What next? Introducing the Transaction Affinities Utility Important noteAffinity utility program components Commands detected by the Transaction Affinities Utility Scanner component Detector componentWhat is detected Detector componentsWhat is not detected Worsening of transaction affinities relationsControlling the Detector How the affinity data is collectedSaving affinity data Affinity data Vsam les Control record Vsam leBuilder component Detector performanceReporter component Report presenting the affinity data in a readable formIntroducing the Transaction Affinities Utility Cics Transaction Affinities Utility Guide Estimating the size of the MVS data space and Vsam les Preparing to use the affinity utility programCreating the Vsam les Dening the Vsam les to Cics #termidsPreparing to use the affinity utility program Cics Transaction Affinities Utility Guide Running the Scanner Creating a summary reportAffmod DD statement Creating a detailed report Cics Transaction Affinities UtilityContents of a detailed report Is an example of a detailed report produced by the Scanner Cics Transaction Affinities Utility Guide Changing the options Running the DetectorChanging the state Displaying the Detector control screen CAFF01When you can start collecting affinity data Starting the collection of affinity dataWhen you can resume collecting affinity data Pausing the collection of affinity dataWhen you can pause affinity data collection Resuming the collection of affinity dataWhen you can stop collecting affinity data Stopping the collection of affinity dataChanging the Detector options CAFF02Restore data on start „1… The control options Perform periodic savesTransid prex „4… Last update by useridSize of dataspace „2… Detect affinity typesDetector errors Cics Transaction Affinities Utility Guide CAUAFF1, CAUAFF2, and CAUAFF3 DD statements Running the ReporterRequesting a report from the Reporter Caucntl DD statementsTrangrps DD statement Output from the ReporterCmdgrps DD statement Affinity report System„3… Affinities reports „1… Incorrect affinity types„2… Affinity types reported TrangroupAffinity RecoverableCommand LifetimeBTS Task Producing affinity transaction group denitionsTerminal Total TransactionsUsing the affinity report Afflifesystem Descaddress CWARemove false affinities Understanding the affinitiesModifying affinity transaction groups Remove affinity relation worseningCompressing affinity data ENQUEUEs/DEQUEUEs Using the IBM Cross System ProductSPI commands Shared storageDetailed affinity analysis ENQUEUE/DEQUEUEGetmain Shared SPI commands Cics Transaction Affinities Utility Guide CONTEXT=plexname Running the BuilderDSPSIZE=16number Affgrps DD statement Syntax for input to the BuilderRepgrps DD statement Builder input syntax Combined affinity transaction group denitions Header statementsOutput from the Builder Combining basic affinity transaction groups Relation a Relation B Resultant relation C Group merge report Data sets processed reportEmpty transaction groups report Error report Sample group merge reportSample error report Cics Transaction Affinities Utility Guide Appendix A. Details of what is detected ENQ/DEQTS commands Load HOLD/RELEASEAddress CWA CANCEL/DELAY/POST/START SPI commands Wait commandsCics Transaction Affinities Utility Guide Examples Reporter outputScanner output Example 2±VS Cobol Which occurs for the rst Move Move Unrecognized Transids Logon or System when Pconv expectedCobol affinities Cics Transaction Affinities Utility Guide Function code values Appendix D. DiagnosticsDetector table manager diagnostics Table identier values Reason code values Reason code values Detector Cafb request queue manager diagnosticsDate formatter diagnostics This sectionIndex Bappl Vsam Cics Transaction Affinities Utility Guide Sending your comments to IBM Ibmr IBM

OS specifications

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