How to grant permissions to Oracle users
Step 1: Connect to the Oracle database
Use SQL*Plus or other Oracle client to connect to the target database.
Step 2: Grant permissions to specific objects
To grant permissions to a specific table, use the following syntax:
<code>GRANT <权限> ON <表名> TO <用户名>;</p>
<p>For example, to To grant user <code>scott</code> <code>SELECT</code> and <code>UPDATE</code> permissions on table <code>EMPLOYEES</code>, use: </p>
<pre class="brush:php;toolbar:false"><code>GRANT SELECT, UPDATE ON EMPLOYEES TO scott;</code>
Step 3: Grant permissions to schema objects
To grant permissions to all objects within the schema, use the ALL keyword:
<code>GRANT <权限> ON <架构名>.ALL_OBJECTS TO <用户名>;</code>
For example, to grant For user scott to have SELECT permissions on all objects within schema HR, use:
<code>GRANT SELECT ON HR.ALL_OBJECTS TO scott;</code>
Step 4: Grant system permissions
To grant system-wide permissions, such as CREATE USER, use SYSTEM Special schema:
<code>GRANT <权限> ON SYSTEM.<对象名> TO <用户名>;</code>
For example, to grant user scott To create permissions for a user, use:
<code>GRANT CREATE USER ON SYSTEM.USER TO scott;</code>
Step 5: Revoke Permissions
To revoke previously granted permissions, useREVOKE Statement:
<code>REVOKE <权限> ON <对象名> FROM <用户名>;</code>
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