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FIGURE 3-3. Enterprise Manager instance configuration view
Oracle Enterprise Manager (OEM) is a great tool to assist the beginner DBA through to the experienced one. You should, however, also learn the low-level commands that will allow you to do your job through an interface like SQL*Plus. OEM can help you with this by showing you the SQL that it has generated when you select the Show Sql button that exists on many windows. Given how many options OEM has to help you do your job as a DBA, we will take a quick look at them here.
First off, OEM can be used to manage all of the databases in your network. As you can see in Figure 3-3, once you expand the network, you can select Databases
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