Ok, I misunderstood the HC infrastructure.
I meant, VLF knows the current youngest age and makes it available to the HC 
routine at each HC interval, which is volatile and is lost if  the HC does not 
alert, but not to me at each SMF41 interval.
I hope they will change this. As Peter more or less suggested: they forgot to 
do it.

Kees.

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Tom Marchant
Sent: 15 March, 2016 15:33
To: [email protected]
Subject: Re: SMF41 VLF info and ALERTAGE

On Tue, 15 Mar 2016 12:29:11 +0000, Vernooij, CP (ITOPT1) - KLM  wrote:

>I already guessed HC got the value from VLF internals,

Well, not exactly. Health Checker establishes the infrastructure for doing 
health 
checks. System components then register their health check with HC, which 
invokes the routine that the component registered to perform the check. That 
component's check routine performs the check and uses the HC infrastructure to 
report on the results of the check in a common way.

> so my immediate reaction was: why tell HC and not me?

The check routine does tell you. With a health check message.

>I already opened a PMR for adding the info to SMF 41-3.

Good luck with that. Maybe they'll convert it to an RFE.

-- 
Tom Marchant

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