DBMS_CLOUD Package in DBCS VM DB

The dbms_cloud package comes built in in autonomous databases. Starting with 19.9 the dbms_cloud package could be installed in other databases as well. This has been documented in 2748362.1. There were no issues encountered while setting up the package in DBCS VM DB following the 2748362.1. The downloaded ssl files were stored in commonstore.

define sslwalletdir=/opt/oracle/dcs/commonstore/wallets/ssl

What was noticable is that unlike in autonomous database certain functionality has been restricted.
Files could be uploaded to storage bucket from the DBCS VM DB.

SQL> exec dbms_cloud.put_object('BACKUP_CRED','https://swiftobjectstorage.uk-london-1.oraclecloud.com/v1/#namespace#/tabledata/exptest.dmp','DATA_PUMP_DIR','exp.dmp');

PL/SQL procedure successfully completed.

The files in a bucket could be listed as well.

SQL> select object_name, bytes from dbms_cloud.list_objects('BACKUP_CRED','https://swiftobjectstorage.uk-london-1.oraclecloud.com/v1/#namespace#/tabledata');

OBJECT_NAME BYTES
----------- ---------
exptest.dmp 2932736

The package allows getting files from storage bucket.

SQL> exec dbms_cloud.get_object('BACKUP_CRED','https://swiftobjectstorage.uk-london-1.oraclecloud.com/v1/#namespace#/tabledata/exptest.dmp','DATA_PUMP_DIR','gotfrombucketexp.dmp');

PL/SQL procedure successfully completed.

ls /u01/app/oracle/admin/ORCL/dpdump/BBAE40CB362D1F2CE0535406F40A0C73/
gotfrombucketexp.dmp

However, unlike in ATP importing and exporting from and to storage bucket fails.
Importing

impdp asanga@uatpdb credential=BACKUP_CRED dumpfile='https://swiftobjectstorage.uk-london-1.oraclecloud.com/v1/#namespace#/tabledata/exptest.dmp' directory=data_pump_dir logfile=impnew.log logtime=all metrics=yes

ORA-39001: invalid argument value
ORA-39000: bad dump file specification
ORA-31640: unable to open dump file "https://swiftobjectstorage.uk-london-1.oraclecloud.com/v1/#namespace#/tabledata/exptest.dmp" for read
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 7

Exporting

expdp  asanga@uatpdb  dumpfile='DEFAULT_CREDENTIAL:https://swiftobjectstorage.uk-london-1.oraclecloud.com/v1/#namespace#/tabledata/expnew.dmp' directory=data_pump_dir logfile=newexp.log exclude=STATISTICS logtime=all metrics=yes

Connected to: Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
ORA-39001: invalid argument value
ORA-39000: bad dump file specification
ORA-39088: file name cannot contain a path specification

After an SR oracle support stated that this feature is only available for autonomous and not available for other databases. Even if, now dbms_cloud package allows creation of credentials and 19c version of expdp/impdp allow credentails.

Another difference is the creation of external tables. It is possible to create external tables using csv files.

SQL>    DBMS_CLOUD.CREATE_EXTERNAL_TABLE(
          table_name =>'test_ex_table',
          credential_name =>'BACKUP_CRED',
          file_uri_list =>'https://swiftobjectstorage.uk-london-1.oraclecloud.com/v1/#namespace#/tabledata/test2.csv',
          format => json_object('type' value 'csv', 'skipheaders' value '1'),
		  field_list =>'A,B,C',
          column_list =>'A number,
                          B varchar2(20),
                     C number');
       END;
      /

PL/SQL procedure successfully completed.

SQL> select * from test_ex_table;

         A B                             C
---------- -------------------- ----------
       998 abc 998                   20958
       999 abc 999                   20979
      1000 abc 1000                  21000
         1 abc 1                        21
         2 abc 2                        42
         3 abc 3                        63

However, querying an external table created using datapump file fails.

SQL> BEGIN
   DBMS_CLOUD.CREATE_EXTERNAL_TABLE(
    table_name =>'test_dmp_table',
        credential_name =>'BACKUP_CRED',
    file_uri_list =>'https://swiftobjectstorage.uk-london-1.oraclecloud.com/v1/#namespace#/tabledata/datetest.dmp',
        format => json_object('type' value 'datapump', 'rejectlimit' value '1'),
    column_list =>'VERSION VARCHAR2(20), INDATE date' );
    END;
/ 

PL/SQL procedure successfully completed.

SQL> select * from test_dmp_table;
select * from test_dmp_table
*
ERROR at line 1:
ORA-29913: error in executing ODCIEXTTABLEOPEN callout
ORA-29400: data cartridge error
KUP-11010: unable to open at least one dump file for fetch

Same dumpfile and bucket works for ATP (see earlier post).