How do I logout a user in SQL?

In SQL*Plus command-line, use EXIT or QUIT to log out of Oracle Database and return control to your computer’s operating system. In iSQL*Plus, click the Logout button to log out of Oracle Database. Your script might begin with a CONNECT command and end with a DISCONNECT, as shown later.

How do I logout a user in SQL Server?


  1. Open SSMS.
  2. Connect to a SQL Server instance.
  3. In Object Explorer, go to « Security » node then logins.
  4. Right-click on the SQL Server Login you want to drop then click on “Delete”
  5. SSMS will show following warning message.
  6. Click on “OK”

How do I manage users in SQL Server?

You can do it with SQL Server Management Console:

  1. Connect to server.
  2. Go to Security > Logins.
  3. Select user, right-click and choose Properties option.
  4. Go to Securables tab.
  5. Select Grant option at Alter any login permission.
  6. Confirm with OK button.
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How do I remove a user from schema?

Expand your database -> Security -> Schemas. In the Object Explorer Details you can see a list of the schemas and the owners: Right click on the schema that is owned by the user you want to delete and change the owner (Properties -> General -> Schema Owner).

How do I kill a SQL database connection?

Right-click on a database in SSMS and choose delete. In the dialog, check the checkbox for “Close existing connections.” Click the Script button at the top of the dialog.

How do you disconnect in SQL?

To disconnect the connection after the query completes, from the menus go to Tools > Options > Query Execution > SQL Server > Advanced and select “Disconnect after the query executes”. By checking this option, after the query executes the database connection will be disconnected.

How do I force disconnect a user in SQL Server?

When you right click on a database and click Tasks and then click Detach Database , it brings up a dialog with the active connections. By clicking on the hyperlink under “Messages” you can kill the active connections. You can then kill those connections without detaching the database.

Can’t drop login as the user is currently logged in SQL Server?

This error generates when a login has made a connection to the SQL Server Instance and you are trying to drop the same login. Solution to fix this issue is to close all sessions which are opened by this login and then drop it.

How do I change the username and password for SQL Server authentication?


  1. In the SQL Server Management Studio, open Object Explorer.
  2. Click Server_instance_name > Security > Logins.
  3. Right-click Logins and select New Login.
  4. On the General page, in the Login name field, type the name for a new user.
  5. Select SQL Server authentication.
  6. In the Password field, type a password for the user.
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What is the syntax for creating new login on the SQL Server?

CREATE LOGIN [<domainname><loginname>] FROM WINDOWS; Example to create a login from a Windows domain account. CREATE LOGIN <loginname> WITH PASSWORD = ‘<Password>’, SID = 0x241C11948AEEB749B0D22646DB1AXXXX; Example to create a login from SID.

How do I change the owner of a schema?

ALTER SCHEMA changes the definition of a schema. You must own the schema to use ALTER SCHEMA. To rename a schema you must also have the CREATE privilege for the database. To alter the owner, you must also be a direct or indirect member of the new owning role, and you must have the CREATE privilege for the database.

How do I delete a schema in SQL Server?

First, specify the name of the schema that you want to drop. If the schema contains any objects, the statement will fail. Therefore, you must delete all objects in the schema before removing the schema. Second, use the IF EXISTS option to conditionally remove the schema only if the schema exists.

How do I delete a schema in MySQL?

First, launch the MySQL workbench and log in to the MySQL Server. Second, right-click the database that you want to remove, for example, testdb2 and choose the Drop Schema… option. Third, MySQL Workbench displays a dialog to confirm the deletion.

How do you kill a user session in SQL?

You can use the KILL SPID command to kill a particular user session. You can only KILL the user processes. Once we kill a session, it undergoes through the rollback process, and it might take time and resources as well to perform a rollback.

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How do I delete a database in single user mode?

First, make sure the object explorer is pointed to a system database like master. Second, execute a sp_who2 and find all the connections to database ‘my_db’. Kill all the connections by doing KILL { session id } where session id is the SPID listed by sp_who2 . Third, open a new query window.

How do I stop a running query in MySQL?

How to Kill MySQL Queries

  1. Show processlist;
  2. Then review the “Time” field to find the longest running query.
  3. Next, run the following command to kill it: kill thread_ID;