You can export data to Oracle Data Pump dump files by specifying a query.

1. Connect to your database.
2. Store your object store credentials using the procedure DBMS_CLOUD.CREATE_CREDENTIAL.

   For example:

   BEGIN
     DBMS_CLOUD.CREATE_CREDENTIAL(
       credential_name => 'DEF_CRED_NAME',
       username => 'adb_user@example.com',
       password => 'password'
     );
   END;
   /
   

   Creating a credential to access Oracle Cloud Infrastructure Object Store is not required if you enable resource principal credentials. See Use Resource Principal to Access Oracle Cloud Infrastructure Resources for more information.

   This operation stores the credentials in the database in an encrypted format. You can use any name for the credential name. Note that this step is required only once unless your object store credentials change. Once you store the credentials you can then use the same credential name.

   See CREATE_CREDENTIAL Procedure for information about the username and password parameters for different object storage services.

3. Export data from Autonomous Database to your Cloud Object Store as Oracle Data Pump dump file(s) by calling DBMS_CLOUD.EXPORT_DATA with the format parameter type set to value datapump. For example:

   BEGIN
    DBMS_CLOUD.EXPORT_DATA(
       credential_name =>'DEF_CRED_NAME',
       file_uri_list =>'https://objectstorage.us-phoenix-1.oraclecloud.com/n/namespace-string/b/bucketname/o/exp01.dmp',
       format => json_object('type' value 'datapump'),
       query => 'SELECT warehouse_id, quantity FROM inventories'
    );
   END;
   /
   

   The parameters are:

   • credential_name: is the name of the credential created in the previous step.

   • file_uri_list: is a comma delimited list of the export file(s). Use of wildcard and substitution characters is not supported in the file_uri_list.

   • format: specifies the required type parameter with the value datapump, and optionally defines the options you can specify for the export with the ORACLE_DATAPUMP Access Driver.

   • query: specifies a SELECT statement so that only the required data is exported. The query determines the contents of the dump file(s).

   In this example, namespace-string is the Oracle Cloud Infrastructure object storage namespace and bucketname is the bucket name. See Understanding Object Storage Namespaces for more information.

   Note
   
   The DBMS_CLOUD.EXPORT_DATA procedure creates the dump file(s) that you specify in the file_uri_list. The procedure does not overwrite files. If a dump file in the file_uri_list exists, DBMS_CLOUD.EXPORT_DATA reports an error. DBMS_CLOUD.EXPORT_DATA does not create buckets.

   For detailed information about the parameters, see EXPORT_DATA Procedure.

4. Perform the required steps to use Oracle Data Pump import and clean up. See Download Dump Files, Run Data Pump Import, and Clean Up Object Store for more details.