Why I can't create indexes on the table of RDF data

When I tried to create indexes on the table of RDF data, it always say the table or view does not exist. I created the RDF model using java codes:

Oracle Oracle = new Oracle ("jdbc:oracle:thin:@localhost:1521:orcl", "system", "123");

Chart GraphOracleSem = new GraphOracleSem (oracle, "test2");


And used the following commands in sqlplus to create indexes:

SQL >

SELECT THE SEPARATE OWNER, OBJECT_NAME

FROM DBA_OBJECTS

WHERE TYPE_OBJET = 'TABLE '.

4. AND OBJECT_NAME like ' % TEST2;

OWNER

--------------------------------------------------------------------------------

OBJECT_NAME

--------------------------------------------------------------------------------

SYSTEM

TEST2_NS

SYSTEM

RDFB_TEST2

SYSTEM

TEST2_TPL

OWNER

--------------------------------------------------------------------------------

OBJECT_NAME

--------------------------------------------------------------------------------

SYSTEM

RDFC_TEST2


SQL > connect as sysdba

Enter the password:

Connected.

SQL >

SQL >

SQL > select * from TEST2_TPL;

Select * from TEST2_TPL

*

ERROR on line 1:

ORA-00942: table or view does not exist

SQL > CREATE INDEX test2_sub_idx ON TEST2_TPL (triple. GET_SUBJECT());

CREATE INDEX test2_sub_idx ON TEST2_TPL (triple. GET_SUBJECT())

*

ERROR on line 1:

ORA-00942: table or view does not exist

Hi Shifu,

It is not recommended to use the SYS or SYSTEM to store/manage schema graph RDF data.

Can you please try the following in a SQL * more terminal?

SQL > conn system/eu1

Connected.

SQL >

SQL >

SQL > create user graphuser identified by graphuser;

Created by the user.

SQL > grant connect, resources, unlimited tablespace to graphuser;

Grant succeeded.

SQL > conn graphuser/graphuser

Connected.

SQL > create table graph_tpl (triple sdo_rdf_triple_s) compress;

Table created.

SQL > sem_apis.create_sem_model exec ('graphic', 'graph_tpl', 'three');

PL/SQL procedure successfully completed.

SQL > insert into graph_tpl values (sdo_rdf_triple_s ('graph', '', '', ''));

1 line of creation.

SQL > select count (1) in the mdsys.rdfm_graph;

1

You see the same result?

Thank you

Zhe Wu

Tags: Database

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    ----------------------------------------------------------

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