Virtualization or non-virtualisation

Hi all.

It takes to install databases 2 (10.2.0.1 and 10.2.0.5): Test and production. The two OLTP and not more than 200 Gb each. Obviusly Prod environment will be configured in the newspaper archive and test in noarchive log.

But we have a doubt about it:

-We have a server with the following resources:

  • 16 GB of RAM
  • Xeon processor clocked at 2.66 GHZ Quad Core
  • 500 GB of storage.

In order to obtain more reliable configuration which option do you recommend?

  1. Installation of Solaris 10 OS, then install the Oracle software and the 2 databases. or
  2. Install the operating system Solaris 10, virtualization software, create two virtual machines, two installations of oracle SW and finally each database in each virtual machine?

I would get a configuration where the execution of production environment cannot be affected by the test environment.

What do you think??

Thank you very much for your answers.

I'm not a fan of running test and production databases on the same physical server in the first place...

If your main objective is to minimize the impact of the database of test on the production database, two virtual machines are likely to be the way to go.  This assumes that you will to allocate fixed amounts of RAM and CPU to each virtual machine rather than allowing virtual machines to grow and shrink as demand changes.  Helps to isolate the load test prod.  But it has the disadvantage that when the test is in standby, prod won't be able to use, say, half of the physical resources on the server.  If you allow prod grasp more resources during the test is idle, which tends to lead to a better use of the available material, production performance will be necessarily affected negatively when someone starts running queries on the test.  You can try to balance the trade-offs by, say, leaving prod have at least half of the resources and increase to 3/4 of the resources and let test have at least a quarter of the resources and grow to half of the resources.

Of course, even with two virtual machines that have fixed sizes, it is still possible for test to assign prod.  If you have a lot of running in the test queries that use a ton of bandwidth for I/O, for example, you go to the impact of the e/s available bandwidth for the prod database.

Justin

Tags: Database

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