Different variations of the Enterprise Manager Database login page appear automatically based on the feature that you requested while logging in.

1. Log into Oracle Enterprise Manager Cloud Control as either user SYSTEM or SYSMAN.

   The URL is as follows:

   https://host:port/em

2. Navigate to the Databases page.
3. Select the database that you want to access.

   The database home page appears.

4. Select the menu item for the action that you want to perform, such as selecting Administration, then Security, and then Users to authenticate a user.

   The Database Login page appears. The following example shows the Database Login page for the CDB (because the database name is shown as CDB$ROOT). Because of this name, this page is colloquially referred to as the database login page for the root of the multitenant environment. The Database field refers to the current database; had you selected a PDB, then the name of the PDB would appear in this field.

   
   Description of the illustration em_login.gif
5. Log in using the appropriate credentials.

   Remember that only common users can log into the root, and that the names of common users begin with C## or c##. Both common and local users can log into a PDB, depending on their privileges.

From Oracle Enterprise Manager, you can switch from one PDB to a different PDB, or to the root.

1. At the top left side of the page, find the database link.

   In the database link, the current container name appears. The following example shows that the current database is the CDB itself (CDB$ROOT), colloquially known as the root.

   
   Description of the illustration em_database_breadcrumb.gif
2. Select the menu icon to the right of the container, and from this menu, select the database that you want to access.

   If the menu item does not appear, then navigate to a page where it does appear, such as the Database home page.

3. When you decide which activity you want to perform (such as creating users), log in with the appropriate privileges.

   If you attempt to perform an activity without first having authenticated with the appropriate privileges, then you will be prompted to log in with the appropriate privilege.

A common user is a user that exists in the root and can access PDBs in the CDB.

1. From the Enterprise Manager database home page, log in to the root as a common user who has the common CREATE USER and SET CONTAINER privileges.
2. From the Administration menu, select Security, then Users.

   If prompted, enter your login information. Afterward, the Users page appears.

3. Click Create.

   The Create User page appears.

   
   Description of the illustration em_com_user_create2.gif
4. Select the options to create a common user and grant this user privileges.

   Ensure that you preface the user name with C## or c##.

5. Click OK or Apply.

   The common user is created in the root and will appear in the Users page for any associated PDBs.

You can edit a common user account from the root.

1. From the Enterprise Manager database home page, log in to the root as a common user who has the common CREATE USER and SET CONTAINER privileges.
   • If you are logging into the root, then ensure that you are a common user who has the common CREATE USER and SET CONTAINER privileges.
   • If you are logging into a PDB, ensure that you have the CREATE USER privilege for that PDB.
2. From the Administration menu, select Security, then Users.

   If prompted, enter your login information. Afterward, the Users page appears. In the root, only common users are listed. In the PDB, both common and local users are listed.

3. Select the common user to be edited and then click Edit.

   The Edit User page appears. For a common user in the root, you can modify all settings for the common user. For a common user in a PDB, you cannot change the user password, default tablespace, and temporary tablespace. The settings that you make apply only to the current PDB. The following screen shows how a common user Edit User page appears in a PDB.

   
   Description of the illustration em_com_user_edit.gif
4. Modify the common user as necessary.
5. Click Apply.

You can drop a common user from the CDB root.

1. From the Enterprise Manager database home page, log in to the root as a common user who has the common CREATE USER and SET CONTAINER privileges.
   You cannot drop common users from PDBs.
2. From the Administration menu, select Security, then Users.

   If prompted, enter your login information. Afterward, the Users page appears, listing only common users.

3. Select the common user that you want to drop and then click Delete.
4. Confirm that you want to delete the common user.

A local user is a user that exists only in a specific PDB and does not have access to any other PDBs in the multitenant environment.

1. From the Enterprise Manager database home page, log in to the root as a local or common user who has the local CREATE USER privilege.
2. From the Administration menu, select Security, then Users.

   If prompted, enter your login information. Afterward, the Users page appears, showing only local users for the current PDB.

3. Click Create.

   The Create User page appears.

4. Select the options that create a local user and grant this user privileges.

   Ensure that you do not preface the user name with C## or c##.

5. Click OK.

   The local user is created in the current PDB.

You can edit a local user from the PDB in which the local user resides.

1. From the Enterprise Manager database home page, log in to the PDB as a local or common user who has the local CREATE USER privilege.
2. From the Administration menu, select Security, then Users.

   If prompted, enter your login information. Afterward, the Users page appears, showing only local users for the current PDB and common users.

3. Select the local user to be edited and then click Edit.

   The Edit User page appears.

4. Modify the local user as necessary.
5. Click Apply.

You can drop a local user from the PDB in which the local user resides.

1. From the Enterprise Manager database home page, log in to the PDB as a local or common user who has the local CREATE USER privilege.
2. From the Administration menu, select Security, then Users.

   If prompted, enter your login information. Afterward, the Users page appears, showing only local users for the current PDB and common users. (You cannot drop common users from a PDB.)

3. Select the local user you want to drop and then click Delete.

   Enterprise Manager prompts you to confirm deletion of the user.

4. Confirm that you want to delete the local user.

Common roles can be used to assign common privileges to common users.

1. From the Enterprise Manager database home page, log in to the root as a common user who has the common CREATE ROLE and SET CONTAINER privileges.
2. From the Administration menu, select Security, then Roles.

   If prompted, enter your login information. Afterward, the Create Role page appears.

3. Click Create.

   The Create Role page appears.

   
   Description of the illustration em_com_role_create.gif
4. Select the options that create a common role and grant this role privileges.

   Ensure that you preface the role name with C## or c##.

5. Click OK.

   The common role is created in the root.

You can edit a common role from the root.

1. From the Enterprise Manager database home page, log in to the root or the PDB. If you are logging into the root, then ensure that you are a common user who has the common CREATE ROLE and SET CONTAINER privileges. If you are logging into a PDB, ensure that you have the CREATE ROLE privilege for that PDB.
2. From the Administration menu, select Security, then Roles.

   If prompted, enter your login information. Afterward, the Roles page appears. In the root, only common roles are shown. In the PDB, both common and local roles are shown.

3. Select the common role to be edited and then click Edit.

   The Edit Role page appears. For a common user in the root, you can modify all settings for the common user.

   For a common role in a PDB, you can only change the role's authentication and grant this user different roles, system privileges, object privileges, and consumer group privileges. These settings apply only to the current PDB.

4. Modify the common user as necessary.
5. Click Apply.

You can drop a common role from the root.

1. From the Enterprise Manager database home page, log in to the root as a common user who has the common CREATE ROLE and SET CONTAINER privileges.
   You cannot drop common roles from PDBs.
2. From the Administration menu, select Security, then Roles.

   If prompted, enter your login information. Afterward, the Roles page appears, showing only common roles.

3. Select the common role that you want to drop and then click Delete.
4. Confirm that you want to delete the common role.

You can revoke common privilege grants from the root.

1. From the Enterprise Manager database home page, log in to the root as a common user who has the common CREATE USER, CREATE ROLE, and SET CONTAINER privileges.
2. From the Administration menu, select Security, then Users.

   The Users page lists the common users.

3. Select the user whose privileges you want to revoke and then click Edit.

   The Edit User page appears.

4. Select Roles or the appropriate Privileges tab.

   Enterprise Manager displays a list of roles and privileges assigned to this user.

5. Select Edit List and then remove the roles or privileges as necessary.
6. Click the OK button.

A common role can be used to assign a local set of privileges to local users later.

1. From the Enterprise Manager database home page, log in to the PDB as a user who has the local CREATE ROLE privilege.
2. From the Administration menu, select Security, then Roles.

   The Roles page appears.

3. Click Create.

   If prompted, enter your login information. Afterward, the Create Role page appears.

4. Select the options that create a local role and grant this role privileges.

   Ensure that you do not preface the role name with C## or c##.

5. Click OK.

   The local role is created in the current PDB.

You can edit a local role in the PDB in which the local role resides.

1. From the Enterprise Manager database home page, log in to the PDB as a user who has the local CREATE ROLE privilege.
2. From the Administration menu, select Security, then Roles.

   If prompted, enter your login information. Afterward, the Roles page appears, showing only local roles for the current PDB and common roles.

3. Select the local role to be edited and then click Edit.

   The Edit User page appears.

4. Modify the local user as necessary.
5. Click Apply.

You can drop local role from the PDB in which the local role resides.

1. From the Enterprise Manager database home page, log in to the PDB as a user who has the local CREATE ROLE privilege.
2. From the Administration menu, select Security, then Role.

   If prompted, enter your login information. Afterward, the Roles page appears, showing only local roles for the current PDB and common roles. (You cannot drop common roles from a PDB.)

3. Select the local role you want to drop and then click Delete.

   Enterprise Manager prompts you to confirm deletion of the role.

4. Confirm that you want to delete the local role.

You can revoke local privileges in the PDB in which the privileges are used.

1. From the Enterprise Manager database home page, log in to the PDB as a common or local user who has the CREATE USER and CREATE ROLE privileges.
2. From the Administration menu, select Security, then Users.

   If prompted, enter your login information. Afterward, the Users page appears. In a PDB, both common and local users are listed.

3. Select the user whose privileges you want to revoke and then click Edit.

   The Edit User page appears.

4. Select Roles or the appropriate Privileges tab.

   Enterprise Manager displays a list of roles and privileges assigned to this user.

5. Select Edit List and then remove the privileges as necessary.
6. Click the OK button.