Preamble
You can find users created in Oracle by performing a command line query. User information is stored in various system tables – ALL_USERS and DBA_USERS, depending on what user information you want to get.
ALL_USERS
If you need to find all users that are visible to current users, you can query the ALL_USERS table.
Syntax to extract user information from ALL_USERS table in Oracle/PLSQL
SELECT *
FROM ALL_USERS;
Table ALL_USERS contains the following columns:
| Column | Description |
| USERNAME | Username |
| USER_ID | Numerical identifier assigned to the user |
| CREATED | Date when the user was created |
DBA_USERS
If you need to find all users that exist in Oracle or need additional user information, there is another system table called DBA_USERS.
Syntax to extract user information from DBA_USERS table in Oracle/PLSQL:
SELECT *
FROM DBA_USERS;
The DBA_USERS table contains the following columns:
| Column | Description |
| USERNAME | Name of user |
| USER_ID | Numerical identifier assigned to the user |
| PASSWORD | password |
| ACCOUNT_STATUS | User status:
|
| LOCK_DATE | The date on which the user was blocked (if applicable) |
| EXPIRY_DATE | User term |
| DEFAULT_TABLESPACE | User’s table space, by default |
| TEMPORARY_TABLESPACE | Temporary table space for user |
| CREATED | Date when the user was created |
| PROFILE | User share profile name |
| INITIAL_RSRC_CONSUMER_GROUP | Initial consumer group resource for user |
| EXTERNAL_NAME | External user name |
| PASSWORD_VERSIONS | Password hash versions list |
| EDITIONS_ENABLED | Y/N shows the version that was enabled for the user |
| AUTHENTICATION_TYPE | Authentication method for the user |
| PROXY_ONLY_CONNECT | Y/N, indicating whether the user can connect directly or only through a proxy server |
| COMMON | Y/N, indicating whether the user is sharing |
| LAST_LOGIN | Last login time |
| ORACLE_MAINTAINED | Y/N, indicating whether the user created and supported Oracle scripts |
How to Find Username and Password of User Account in Oracle Database
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