You should disable the flashback data archive first. Note: You cannot delete the user with a schema containing a table that uses a flashback data archive. The roles created by the dropped user will remain intact after the deletion. These views will not be removed but you will not be able to refresh them as the table does not exist anymore. However, if we are talking about the materialized views in other schemas that refer to the table in a dropped one, the scenario will not be the same. In such a scenario, these objects will be removed along with the dropped user even if they belong to a different schema. You might encounter a situation where some of the objects in the database refer to the schema objects owned by the user we are going to drop. There is another important thing to remember. To ensure that all the objects are dropped, add CASCADE before executing the command. In this syntax, it is important to specify the name of the user to be deleted after the DROP USER keywords. The CASCADE clause will help you make sure everything, including contents and datafiles, is deleted along with the owner shema.įor a better understanding of the DROP USER practical usage, take a look at the basic syntax of the command: DROP USER username CASCADE In case an Oracle user owns any database objects, this syntax is the only way to drop it. The next thing we are going to discuss is the DROP USER CASCADE command. Later in this article, we will figure out how to delete a user in Oracle despite these factors. The DROP USER command in Oracle will work for a user that owns no database objects and is not currently connected. The basic syntax to drop a user in Oracle looks like this: DROP USER username If you try to drop users SYS or SYSTEM, this will lead to your database corruption. Note: You must have the DROP USER privileges to successfully run the query. Additionally, with the DROP USER statement, you can remove the user’s schema objects as well. The main purpose of the statement is to delete a database user that you no longer need. To begin with, let us take a closer look at the syntax of the DROP USER command.
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