Expert Oracle Exadata - Parent Directory

CHAPTER 8 CONFIGURING EXADATAcontinue to use the configuration worksheet. It is a good communication tool and helps to ensure thatthe installation goes smoothly.Step 1: The Configuration WorksheetThe configuration worksheet is provided by Oracle as part of the Exadata documentation set. Thedocumentation is not downloadable from any of the Oracle Web sites. Instead, it is installed in the/usr/share/doc/oracle/Exadata directory of the storage cells. Simply connect to one of the cells as root,celladmin, or cellmonitor and download it to your laptop. Open the welcome.html file in your Webbrowser and you will see a complete list of all the documents in HTML and PDF format. The one you arelooking for is labeled Exadata Database Machine Configuration Worksheets. The worksheet is fairly welldocumented, but we’ll go through it here and talk a little more about some of the parameters andsettings you will need to provide. The information collected in the worksheet falls into four generalcategories:• Exadata configuration parameters• Oracle environment parameters• Network settings• Cell alert notification parametersWe’ll be following a slightly different format here, but we’ll discuss all of the configurationsettings and parameters from the Oracle documentation and adding some commentary alongthe way.Exadata Configuration ParametersExadata configuration parameters are system-wide settings, some of which are used for generating yetother parameters used in the configuration process. For example, the Exadata Database Machine Nameyou provide in the worksheet is used as a host name prefix for all network host names in your Exadatasystem, including compute nodes, storage cells, network switches, ILOMs, and the KVM. It is also usedas a prefix for the cluster name and SCAN name required by Grid Infrastructure. Note: We recently noticed that the new version of the DBM Configurator now appends the Exadata DatabaseMachine Name to the ASM disk group names. For example, if the machine name is ‘exa,’ then the Configuratorgenerates a disk group name of DATA_EXA, rather than DATA_DG, for the data disk group. This is the defaultbehavior, but it may be overridden before generating your configuration files. We’ll talk more about naming yourASM disk groups in “Step 2: The DBM Configurator.” You may notice that some of the other chapters of this book,Chapter 15, for example, use the old naming convention.Table 8-1 shows the Exadata configuration parameters you will enter in the configurationworksheet.242