| Oracle® Database Reference 11g Release 2 (11.2) Part Number E25513-03  | 
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ALL_USERS lists all users of the database visible to the current user. This view does not describe the users (see the related views).
DBA_USERS describes all users of the database, and contains more columns than ALL_USERS.
USER_USERS describes the current user, and contains more columns than ALL_USERS.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
USERNAME | 
VARCHAR2(30) | 
NOT NULL | 
Name of the user | 
USER_ID | 
NUMBER | 
NOT NULL | 
ID number of the user | 
CREATED | 
DATE | 
NOT NULL | 
User creation date | 
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