The user name you use to create a connection must have adequate
privilege to create a user, either by having been granted CREATE
USER privilege or having been granted a role such as
administrator that contains that privilege. If you did not create the
connection with a user with the correct privileges, you will not be able
to select User from the New Gallery.
To create a user:
For information about how to fill in values for the the wizard
parameters and options, click Help in the dialog, or see the CREATE
USER section of the Oracle Database SQL Reference at
http://www.oracle.com/technology/documentation/database10g.html.
Context Menu Shortcut:
Creating, Editing, and Dropping Schema Objects
Working with the Database
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