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<== Date ==> <== Thread ==>

Subject: RE: Disable database question
From: "Zelazny, Michael Stanley" <zelazny@slac.stanford.edu>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Thu, 30 Oct 2014 18:07:05 +0000
If you use the SDIS approach, please think about whether you want to use a database link or a channel access link.  

If you use a database link you're database will be in one giant lock set which, I have discovered, can dramatically change the way your IOC behaves.
________________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of Andrew Johnson [anj@aps.anl.gov]
Sent: Thursday, October 30, 2014 10:57 AM
To: tech-talk@aps.anl.gov
Subject: Re: Disable database question

[snip]

If you want the IOC to stay alive and visible to the outside world then
Bob's suggestion of pointing all the record's SDIS links (which he
mis-spelled as DISL) to a single "ioc enable" PV would probably be
better. There is a brief description of this mechanism at
https://wiki-ext.aps.anl.gov/epics/index.php/RRM_3-14_dbCommon#Scan_Fields

HTH,

- Andrew
--
People everywhere confuse what they read in newspapers with news.
-- A. J. Liebling

References:
Disable database question Elmer Pensack
Re: Disable database question Andrew Johnson

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