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HomeDatabaseMysql TutorialOracle database user management: sharing of steps to create a new query user

Oracle database user management: sharing of steps to create a new query user

Oracle database is a powerful relational database management system. User management is an important part of database management. In Oracle database, user is one of the key entities that connects to the database and accesses the objects in the database. In actual database management work, it is often necessary to create new query users in order to limit user access permissions and improve database security. This article will share the specific steps on how to create a new query user in the Oracle database and provide corresponding code examples.

In Oracle database, creating a new query user usually requires the following steps:

  1. Connect to the database

First, you need Connect to the Oracle database through SQL*Plus tools or other database connection tools. Enter the username and password in the command line to confirm the connection is successful.

sqlplus / as sysdba
  1. Create new user

Next, create a new query user with the following SQL command. In the example, we create a user named NEW_USER and set the password to 123456.

CREATE USER NEW_USER IDENTIFIED BY 123456;
  1. Grant permissions

After creating a user, you need to grant the corresponding permissions to the user. Normally, the newly created query user only needs to have the permission to query data.

GRANT CONNECT, SELECT ON <表名> TO NEW_USER;
  1. Assign default table space

In order to ensure that new users can work normally in the database, they also need to specify a default table space.

ALTER USER NEW_USER DEFAULT TABLESPACE USERS;
  1. Grant temporary tablespace

In order to perform temporary operations, such as sorting or hash joins, you also need to specify a temporary table for the new user space.

ALTER USER NEW_USER TEMPORARY TABLESPACE TEMP;
  1. Verify user creation

Finally, use the following command to see if the new user was successfully created.

SELECT username FROM dba_users WHERE username = 'NEW_USER';

Through the above steps, we successfully created a query user named NEW_USER, granted the corresponding permissions, and set up the default table space and temporary table space. This way, the new user can connect to the database and have permissions to query the data.

In Oracle database, user management is an integral part of the daily work of database administrators. By properly managing users, the security and stability of the database can be effectively guaranteed. I hope the above steps and code examples can help readers better understand the process of creating a new query user in the Oracle database.

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