Question: How Do I Drop An Oracle Database?

How do I drop a user in Oracle?

You must have the DROP USER system privilege.

Specify the user to be dropped.

Oracle Database does not drop users whose schemas contain objects unless you specify CASCADE or unless you first explicitly drop the user’s objects.

Specify CASCADE to drop all objects in the user’s schema before dropping the user..

How can I see all users 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 know if Oracle Listener is running on Windows?

Checking if Oracle Listener is running on WindowsOpen a command window.Type lsnrctl.You will get a prompt the reads LSNRCTL>Type status.If you see the xe* listeners in READY your database is up and running.

Can’t drop user that is currently connected?

Cause: An attempt was made to drop a user that was currently logged in. 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.

What is difference between drop and delete?

DELETE is a Data Manipulation Language command, DML command and is used to remove tuples/records from a relation/table. Whereas DROP is a Data Definition Language, DDL command and is used to remove named elements of schema like relations/table, constraints or entire schema. … DELETE is DML. DROP is DDL.

How do I make sure my Oracle database is running?

Log in to the database server as the oracle user (Oracle 11g server installation user). Run the sqlplus “/as sysdba” command to connect to the database. Run the select INSTANCE_NAME, STATUS from v$instance; command to check the status of database instances.

How do I know if Oracle is running slow?

Do You Know If Your Database Is Slow?SQL> select to_char(begin_time,’hh24:mi’) time, round( value * 10, 2) “Response Time (ms)”from v$sysmetric.where metric_name=’SQL Service Response Time’TIME Response Time (ms)————— ——————07:20 .32.

How do you restart a database?

In Object Explorer, connect to the instance of the Database Engine, right-click the instance of the Database Engine you want to start, and then click Start, Stop, Pause, Resume, or Restart.

How do I drop a schema?

SQL Server DROP SCHEMAFirst, specify the name of the schema that you want to drop. If the schema contains any objects, the statement will fail. … Second, use the IF EXISTS option to conditionally remove the schema only if the schema exists. Attempting to drop a nonexisting schema without the IF EXISTS option will result in an error.

Does dropping a database delete it?

DROP DATABASE drops all tables in the database and deletes the database. Be very careful with this statement! To use DROP DATABASE, you need the DROP privilege on the database. DROP SCHEMA is a synonym for DROP DATABASE .

Can Db_owner drop database?

Members of the db_owner fixed database role can perform all configuration and maintenance activities on the database, and can also drop the database in SQL Server.

How do I start and stop an Oracle database?

To start or shut down Oracle Database:Go to your Oracle Database server.Start SQL*Plus at the command prompt: C:\> sqlplus /NOLOG.Connect to Oracle Database with username SYSDBA: SQL> CONNECT / AS SYSDBA.To start a database, enter: SQL> STARTUP [PFILE=path\filename] … To stop a database, enter: SQL> SHUTDOWN [mode]

How do you drop a database?

To delete a databaseIn 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.

How do I check if my DB is down?

How to check your Oracle Database status (whether running properly or not)Check whether the Oracle Process run or not #> ps -ef | grep pmon. … Check the instance status SQL>select instance_name, status from v$instance;Check whether the database can be read or write SQL>select name, open_mode from v$database;