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1

Sometimes I see Oracle databases with names like SOMEDB and other times I see SOMEDB.WORLD. I can use them interchangeably with no apparent differences. What does the .WORLD part mean? Does WORLD have any specific meaning, or is it just an arbitrary string that happens to be used? I've seen other extensions also.

+5  A: 

It's default value of DEFAULT_DOMAIN setting in sqlnet.ora.

It is supposed to be replaced by your organization's domain, but the admins often leave it as is.

Quassnoi