[Yum] Dependancy resolution problem: multiple providers

[Ken Schroeder (kschroed)]

We have 3 Oracle Groups all that provide libclntsh.so.9.0.  Only 
One of these groups will get installed on any given server.  
Oracle-Client group contains CSCOoraclnt which provides libclntsh.so.9.0
Oracle-Server contains CSCOoraserv which also provides libclntsh.so.9.0
Oracle-Shared-Server contains CSCOorashr which also provides 
libclntsh.so.9.0

On this first round of upgrade testing we have performed after
installing 
the Oracle-Client group, we are running yum update to get additional 
errata. Neither CSCOoraserv, nor CSCOorashr have been installed but yum 
is pulling them in.  Only thing we can figure is because it is trying to
re-satisfy the libclntsh.so.9.0 requirement.

-----Original Message-----
From: seth vidal [mailto:skvidal at phy.duke.edu] 
Sent: Monday, June 13, 2005 9:30 PM
To: Yellowdog Updater, Modified
Cc: Ken Schroeder (kschroed)
Subject: Re: [Yum] Dependancy resolution problem: multiple providers

On Mon, 2005-06-13 at 20:33 -0400, Joshua Jensen wrote:
> I'm seeing a problem that is strange, and goes against what I would 
> think yum would/should do for dependancy resolition.  Let me describe 
> it
> here:
> 
> I do a "yum groupinstall xyz"
> 
> Group xyz contains a package that needs a "bar.so" file.  The yum repo

> that group xyz is in also contains two other packages that provide 
> bar.so, call them foo2 and foo3.  These packages aren't in the xyz 
> group, but are provided by the same repo that the xyz group is in.
> 
> Package foo1, which *also* provides bar.so, is *already* installed on 
> the system.  Given this, why does yum 2.2.1 want to pull down foo2 and
> foo3 packages?  I've seen yum (and anaconda) pull down all N number of

> packages that provide bar.so if it doesn't exist on the machine at 
> all, and this seems fair: Yum has no way of knowing which package is 
> best as they all provide bar.so, so it grabs them all.
> 
> In this case though, yum should know that bar.so so is *already* 
> provided and on the system, and not feel any need to download futher 
> providers of bar.so.  Please tell me I'm smoking crack and that that 
> isn't really supposed to happen.

I think what you think is going on is not what's actually occurring.

why don't you show me this in packages.
-sv