From: bulleid@ku.gro.lioff   
      
   In message , Mladen Gogala   
    writes   
   >I have had a rather unpleasant debate on another forum about Docker. The   
   >whole thing started when a guy who was asking whether anyone has managed   
   >to put RAC in Docker containers went berserk after my counter question   
   >"what would be the point of that?".   
   >Docker containers are light-weight virtual machines which are allegedly   
   >much more efficient than the traditional VM's, created by VMWare or Hyper-   
   >V. I don't see Docker being present in any significant numbers in my   
   >client environments. Cloud service providers are still using VMWare,   
   >Hyper-V and they don't seem to being present in any significant numbers,   
   >   
   >I believe that any virtual machine, not only Docker, is a complete   
   >nonsense when it comes to RAC.  RAC needs very fast private interconnect,   
   >a lot of memory, some of it very fast or global locks will be very slow.   
   >In the context of Oracle RAC, virtual machines are only good for   
   >training, VMWare, Hyper V or KVM being much more . easier to manage. Do   
   >you use Docker for anything except playing with it? How much more   
   >efficient is Docker? Last but not least, what kind of apps are you   
   >putting into Docker containers?   
   >So, is an Oracle database in a Docket container practical or just another   
   >marketing fad, like agile, DevOps and BAAS (Bug as a service)?   
   >Also, Docker seems a little bit rough around the edges.   
   >Bye.   
   >   
   >   
      
   I was briefly looking at the agenda for the UKOUG Tech conference, and   
   appeared to have a couple of sessions on Docker.   
      
   Adrian   
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