From: Tom Mueller <tom.mueller_at_oracle.com>
Date: Thu, 21 Apr 2011 14:57:20 -0500

I've been looking into how a DAS determines that it's a DAS, and I'm
seeing some different approaches:

1. Calling Server.isDas() - this method looks at the instance name; if
it's "server" then return true.

2. Using the "-type" argument that is passed when the JVM is launched.
start-domain passes in DAS, start-local-instance passes in INSTANCE.

3. Calling Server.getName() and doing the comparison to "server"
directly, rather than calling isDas().

Do you know of other ways that code determines whether it is running on
the DAS?

I'd like to move in the direction of consolidating this behavior, so
that we have exactly one way of determining the role that the server is
filling. Thoughts?

Thanks.
Tom