Re: Lock sets for read access

[mrk@aps.anl.gov (Marty Kraimer)]

> From mooney@aps.anl.gov Wed Nov 30 12:37 CST 1994
> Date: Wed, 30 Nov 94 12:36:37 CST
> From: mooney@aps.anl.gov (Tim Mooney)
> To: tech-talk@aps.anl.gov, mrk@aps.anl.gov
> Subject: Re: Lock sets for read access
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> re...
> 
> > From mrk@aps.anl.gov Tue Nov 22 17:53:05 1994
> > 
> > > From mcgehee@noao.edu Tue Nov 22 08:35 CST 1994
> ...
> > > So, my thoughts are:
> > > 1) Do lock sets inhibit read access as well as write and process access?
> > 
> > Starting with 3.12 reads from outside the database, i.e. from channel access,
> > lock. Previously this was not true. Note however that each individual read
> > locks. Thus if you have a series of ca_gets you will not get what you want.
> 
> Could you clarify that?  If a read is attempted while a record is locked
> because a member of its lock set is processing, does the read pend until
> the lock goes away?
> 
> Tim Mooney
> 

Yes the read does pend

Marty Kraimer