IBM OS manual „1… The control options Perform periodic saves, Restore data on start

The Detector options screen, CAFF02, shows the options available to you. You can change an option only when the Detector has stopped, unless one of the notes that follow says otherwise.

Notes:

„1… The control options:

vPerform periodic saves

Whether or not you want the affinity data collected to be saved to the affinity data VSAM ®les if either:

±More than 300 seconds has passed, or more than 1000 table elements have changed, since the last save

±You paused the Detector

(The autosave transaction, CAFB, writes the affinity data to the affinity data VSAM ®les automatically when you stop the Detector.)

Note: This option can be changed while the Detector is stopped, paused, or running.

vRestore data on start

Whether or not you want the affinity data to be restored from the affinity data VSAM ®les when the Detector is started. This enables affinity data to be added to the data collected from previous runs of the Detector. If you are gathering data use this:

±For one set of transaction identi®ers at a time

±For one set of commands at a time

±If the Detector is being run at varying times

It is also of particular value if the Detector terminates unexpectedly, because you do not have to start collecting affinity data all over again; you can start from the last time data was saved.

Notes:

1.The data restored is only for those affinity types that you have chosen to be detected (by specifying Y for the affinity type on the CAFF02 screen).

Data is kept on ®le for all commands, but only the data for the commands that you have selected to be detected may change, and therefore is restored.

2.You can change this option while the Detector is stopped, paused, or running. v Multiple signon with the same userid

Whether or not your conventions allow for more than one user to be signed on to CICS with the same userid at the same time. If so, set the multiple signon with same userid to Y; otherwise, the Detector may incorrectly deduce some affinity lifetimes and create erroneous affinity transaction groups (also known as affinity groups). This includes conventions where more than one user is simultaneously not signed on; that is, they all take the default userid CICSUSER.

Also, if you are running the Detector in an AOR, the userids examined depend on whether the userid is propagated from the TOR, or derived from the SESSION and CONNECTION resource de®nitions. In the last case, you should set the multiple signon option to Y if your conventions allow the same AOR userids to be signed on to CICS at the same time.

It is very important that this option is set correctly. If you are about to start a new run of the Detector, and intend restoring data from the affinity data VSAM ®les,

Chapter 5. Running the Detector 37