Registration of diagrams for the different storage types

Hello

the problem here is this:

-There are two schemas X and Y, which, for objective reasons, need to be registered for different storage types

-schema refers internally to the schema X

X is saved as binary storage successfully model

There is saved as structured storage and here, the system complains with the message:

Error starting line: 1 at the controls.

BEGIN

() DBMS_XMLSCHEMA.registerSchema

SCHEMAURL = > SYS. URIFACTORY.getURI('/rdm/rdmElement2.xsd').getURL (),

SCHEMADOC = > SYS. URIFACTORY.getURI('/public/tech/xsd/rdm/rdmElement.xsd').getXML (),

GENTYPES = > TRUE,

ENABLEHIERARCHY = > DBMS_XMLSCHEMA. ENABLE_HIERARCHY_CONTENTS

);

END;

Error report-

ORA-31091: empty string specified as the name of SQL

ORA-06512: at "XDB". DBMS_XMLSCHEMA_INT', line 55

ORA-06512: at "XDB". DBMS_XMLSCHEMA", line 159

ORA-06512: at line 2

  1. 31091 00000 - "string specified as a SQL name empty.

* Cause: The XML schema document contains a SQL null name. For

for example, the SQLName, SQLType, defaultTable attribute values.

* Action: Make sure all objects specified SQL schema names in the

XML schema document are valid SQL names. Otherwise, delete

These attributes of the schema and try again.

Is it really true that the types of storage should not be mixed? According to the docs, it shouldn't be a problem.

Everything is fine when the two schemas are registered as the same type of storage.

Any suggestions that might cause the problem?

Thank you very much in advance for your help.

To explain with a simple example, why mixed storage may not work...

When we record a relational storage schema object, Oracle creates backstage of a set of object types and SQL collection that map XML to SQL data model structure.

If you understand that it is also easy to understand why your scenario is not supported.

For example, let's say that this is "schema X":

Start

() dbms_xmlschema.registerSchema

schemaURL-online 'schema - X.xsd'

schemaDoc =>

"'http://www.w3.org/2001/XMLSchema" >

'

local-online true

genTypes-online true

);

end;

/

Without annotations of schema, Oracle will create an object SQL like this (generated by the system name) type:

CREATE OR REPLACE TYPE "DEV". ("' CommonType5101_T" AS OBJECT)

"SYS_XDBPD$" "XDB". "' XDB$ RAW_LIST_T."

VARCHAR2 (4000 TANK) "item1",.

'item2' VARCHAR2 (4000 TANK)

)

NO FINAL CANNOT BE INSTANTIATED

/

Now, let's say this scheme registers Y, which uses the schema X Atapez:

Start

() dbms_xmlschema.registerSchema

schemaURL-online 'schema - Y.xsd'

schemaDoc =>

"'http://www.w3.org/2001/XMLSchema" >

'

local-online true

genTypes-online true

);

end;

/

Similarly, Oracle will create another type of SQL object:

CREATE OR REPLACE TYPE 'Root5106_T' AS OBJECT)

"SYS_XDBPD$" "XDB". "' XDB$ RAW_LIST_T."

'Content' 'CommonType5101_T '.

)

FINAL CANNOT BE INSTANTIATED

/

As you can see, the type of 'root' reference the previously created type 'CommonType5101_T' when registering the schema X.

If the schema X is registered for binary XML, no extra SQL type is created.

Therefore, when we try to save the scheme there for the object-relational storage, Oracle will try to retrieve the name of the type that 'Content' attribute of the root must be based on, but since this type does not exist, an error is raised.

Tags: Database

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