How do I force a user to drop in Oracle?
Drop user in Oracle including contents You must use CASCADE keyword to remove all objects owned by the schema. SQL> DROP USER barbie CASCADE; Sometimes users are connected to the database and it takes long time to drop. So in this case you can drop forcefully by killing user session connected to the database.
How do you check if a user exists in Oracle?
SELECT * FROM user_users;
- Oracle ALL_USERS. The ALL_USERS view lists all users that visible to the current user. However, this view doesn’t describe the users.
- Oracle DBA_USERS. The DBA_USERS view describes all user in the Oracle database.
- Oracle USER_USERS. THe USER_USERS view describes the current user:
How do I drop all users in Oracle?
select ‘drop table ‘||table_name||’ cascade constraints;’ from user_tables; This will print out a series of drop commands for all tables in the schema. Spool the result of this query and execute it.
How do I drop a schema in Oracle?
Just login into the schema whose objects you want to drop. Yes you can. You can drop the user and thus drop the schema objects. The DROP USER statement is used to remove a user from the Oracle database and remove all objects owned by that user.
Can not drop a user that is currently connected Oracle?
You can get “ORA-01940: cannot drop a user that is currently connected” error during the drop any user. To solve this problem, you need to lock related user firstly. SQL> alter USER MSD account lock; User altered. Then kill the session of related user as follows.
Can’t drop user that is currently connected?
When we dropping user with “CASCADE” option oracle will not allow us to drop that user because he’s session is present in database no matter weather its ACTIVE or INACTIVE . We need to kill all user session and the proceed with our drop user activity .
How do I remove a connected user in Oracle?
Identify the correct session and terminate the session by performing the steps below:
- Invoke SQL*Plus.
- Query V$SESSION supplying the username for the session you want to terminate: SELECT SID, SERIAL#, STATUS, SERVER.
- Execute the ALTER SYSTEM command to terminate the session: ALTER SYSTEM KILL SESSION ”
How do I drop a database user?
The DROP USER statement allows you to delete a user from the Oracle Database. If the user has schema objects, the DROP USER statement also can remove all the user’s schema objects along with the user. In this syntax, you need to specify the user that you want to drop after the DROP USER keywords.
How do you fix Ora 01940 Cannot drop a user that is currently connected?
Action: Make sure the user is logged out, then re-execute the command. The ORA-01940 can always be cured by bouncing the source and replicated instance. First, double-check to ensure that the user is not connected to the current instance.
How do you check if a user has access to a table in SQL?
So how do you check the permissions on a SQL object? If you only need to check one or two objects, you can use SQL Server Management Studio. Just right click on an object, such as a table, and select Properties. Then click on the Permissions page.
How do I delete an user in SQL?
Steps for removing a MySQL/MariaDB user. If you decided to remove open source application such as WordPress or Drupal you need to remove that user account.
How do I check if a table exists in SQL?
To check if a table exists in SQL Server, you can use the INFORMATION_SCHEMA.TABLES table. You can use this table with an IF THEN clause do determine how your query responds whether or not a table exists. One of the more common uses I find for this when I need to create a table in a script.
How do I clear SQL database?
Delete Database Using SQL Server Management Studio. To drop a database using SQL Server Management Studio, connect to an SQL Server Database Engine instance from Object Explorer, and Expand the instance. Right click on the database which you want to delete, and select Delete. Confirm the database and click Ok button.
How do I delete a SQL database?
To delete a database In Object Explorer, connect to an instance of the SQL Server Database Engine, and then expand that instance. Expand Databases, right-click the database to delete, and then click Delete. Confirm the correct database is selected, and then click OK.