Problems with the function DBMS_XMLSCHEMA.copyEvolve

Question

I´m having problems with the evolution of xml-schema.
First the function DBMS_XMLSCHEMA.copyEvolve works correctly, but since one week I get only errors. Strangely is the fact that I use the same files (xml-schema, xslt and xml instances) and the same SQL-Code. Even if I delete all tables, directories, ... with the drop instruction and create them again, I get only error messages. It is also strangely that the function DBMS_XMLSCHEMA.copyEvolve not works if the old and new xml-schema are identical and no XSLT-Stylesheet is handed over. Can by the function DBMS_XMLSCHEMA.copyEvolve something going wrong in the database ? Do I must recreate the database, and how can I do that by the XE? But that can not be a good solution.
Has anybody a idea what can I do?
Here is my error report:
Error starting at line 1 in command:
BEGIN
DBMS_XMLSCHEMA.copyEvolve(
schemaURLs => xdb$string_list_t('http://localhost:8080/internal/xmlschema/testschema.xsd'),
newSchemas => XMLSequenceType(XDBURIType('/public/testschema_evolution.xsd').getXML()),
transforms => XMLSequenceType(XDBURIType('/public/MapTotestschema_evolution.xslt').getXML()));
END;
Error report:
ORA-30944: Fehler beim Rollback für XML-Schema "http://localhost:8080/internal/xmlschema/testschema.xsd" Tabelle "MYUSER"."XMLSCHEMATABELLE" Spalte ""
ORA-02304: Ungültiges Objektidentifizierungsliteral
ORA-30942: Fehler bei XML Schema Evolution für Schema "http://localhost:8080/internal/xmlschema/testschema.xsd" Tabelle <n/a> Spalte ""
ORA-31088: Objekt "MYUSER"."BIN$QNQjNoYiRfC4KlQtnfUpMw==$0" hängt von Schema ab
ORA-06512: in "XDB.DBMS_XMLSCHEMA_INT", Zeile 113
ORA-06512: in "XDB.DBMS_XMLSCHEMA", Zeile 210
ORA-06512: in Zeile 2
Thanks David

Answer 1

Can you try doing the following before running copyEvolve
SQL> purge recyclebin
  2  /
Recyclebin purged.
SQL> alter session set recyclebin =  off
  2  /
Session altered.
SQL>and see if it works as expected.