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3 de dez. de 2013 · IDENTIFIED BY VALUES. Using the excellent article on the ALTER USER commands from Laurent Schneider, we can generate a dynamic SQL query to set a password without knowing the password itself! Here is the query to read the password from sys.user$ from Laurents article:
18 de fev. de 2016 · We can use the DBMS_METADATA package to reverse engineer a user. When we do that, we can see that we still can use the IDENTIFIED BY VALUES clause. SQL> select dbms_metadata.get_ddl('USER','BOB') from dual; DBMS_METADATA.GET_DDL('USER','BOB') -----
- Using Oracle Alter User Statement to Change The Password For A User
- Using Oracle Alter User Statement to Lock/Unlock A User
- Using Oracle Alter User Statement to Set The User’s Password Expired
- Using Oracle Alter User Statement to Set The Default Profile For A User
- Using Oracle Alter User Statement to Set Default Roles For A User
The following example uses the ALTER USER statement to change the password for the user dolphin: Log in to the Oracle Database using the dolphin user: The user dolphin should be able to authenticate to the Oracle Database using the new password xyz123
This example uses the ALTER USER statement to lock the user dolphin: If you use the user dolphinto log in to the Oracle Database, you should see a message indicating that the user is locked: To unlock the user dolphin, you use the following statement: Now, the user dolphinshould be able to log in to the Oracle Database.
To set the password of the user dolphinexpired, you use the following statement: When you use the user dolphinto log in to the database, Oracle issues a message indicating that the password has expired and requests for the password change as follows:
This statement returns the profile of the user dolphin: When you create a new user without specifying a profile, Oracle will assign the DEFAULTprofile to the user. Let’s create a new user profile called ocean: and assign it to the user dolphin: Now, the default profile of the user dolphin is ocean.
Currently, the user dolphinhas no assigned roles as shown in the output of the following query when executing from the dolphin’s session: First, create a new role called rescue from the user OT‘s session: Second, grant this role to dolphin: Third, use the user dolphin to log in to the Oracle Database. The default role of the user dolphin is rescuen...
Use the ALTER USER statement: To change the authentication or database resource characteristics of a database user. To permit a proxy server to connect as a client without authentication
ALTER USER system IDENTIFIED BY abcdef; Then, to make sure, without quitting sqlplus: CONN system/abcdef That should work. After that, you can log on with system/abcdef when you start sqlplus.
21 de out. de 2021 · 1) alter user identified by "<password>"; 2) alter user identified by values ""; With #1, Oracle generates the hash, and generates a different hash even if the password is exactly the same. With #2, since we are copying the hash, the hash is the same for the same password.
26 de mar. de 2020 · In 18c and 19c there is now a better method. The BY VALUES is in effect now built into the DDL syntax with the NO AUTHENTICATION syntax. This is called "SCHEMA ONLY ACCOUNTS" in Oracle and is a new welcome shortcut. We can test this for my sample user PETE in 18cXE: SQL> alter user pete no authentication; User altered. SQL> The ...
