Databases Reference
In-Depth Information
If we drill down into the detail of the components, you should see that each of the resource types
that we specified in the
mod expires.conf
file should now have an expiry header attached to it, as shown
in Figure 1-18.
Figure 1-18.
Expiry headers defined
Embedded PL/SQL Gateway
In the previous section we covered the Oracle HTTP Server, which is an external component. In this
section, we are going to cover the Embedded PL/SQL Gateway which, for the sake of brevity, I will refer
to as the EPG from now on.
As you can see in Figure 1-19, the EPG is actually a component inside the database, essentially a web
server that is contained within the database itself, thus removing the need to install a separate web
server like the OHS. The EPG was first really made available for us to use in Oracle 10gR2, although it has
been part of the database since Oracle 9iR2 as part of the XML DB system.
Figure 1-19.
Embedded PL/SQL Gateway architecture
So, how do you configure the EPG to work with APEX? Well, it is already documented in the APEX
installation. It is such a simple setup, let's walk through the steps now.
