1 Reply Latest reply on Mar 9, 2015 8:47 PM by ora_tech

    Memory allocation in Linux for EBS

    Dan A

      Hello.

       

      We have a Linux RHEL 5.5 box that we suddenly need to fit 5 Oracle instances onto.

       

      The allocated memory is approx 40GB for the server and cannot be increased.

      Nothing running on there right now. This will be a shared box for both app and db.

       

      My thinking is:

      DB:

      SGA is 1GB.

      PGA = 1GB

       

       

      APPS:

      For EBS, each instance has 128M allocated, and can grow up to 512M (OACORE / OAFORMS). (total 1GB)

       

      So, each instance has 2GB for the database and 1GB for the application. = 3GB each instance.

       

      Is my thinking correct? Is this enough memory for us (less than 100 concurrent users) ?

       

      On this basis, could we not run at least ten instances on that box?

       

      Thanks,


      DA.

        • 1. Re: Memory allocation in Linux for EBS
          ora_tech

          Hi,

           

          We are not sure about the load of each Individual EBS Instance on  your server. If you know that each EBS Instance is consuming not more than 3 GB than it should be fine.

           

          I recommend you to configure a single EBS Instance and check the load bases on the usage you can Identify how many Instances can be configured on the server.

           

          regards,

          X A H E E R