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[protege-discussion] Problem with Oracle database backend

Ulf Licht Ulf.Licht at
Fri Feb 19 02:03:09 PST 2010

Hello list,

I encountered the following problem in Protege Version 3.4.3 (Build 572) 
when converting the sample project to format "database" using an Oracle 
11g ( database as backend.

1. Errors at copying knowledgebase
        Exception class java.sql.BatchUpdateException.  Message: 
ORA-01400: cannot insert NULL into ("ESSENTIAL"."ESSENTIALSAMPLE"."FACET")

This problem is already been reported in June 2009 for version 3.4.1 <
> with an Oracle 10g backend but it seems that the recommended fixes were 
not yet included into a current release. Unfortunately the Protege 
bugzilla does not allow me to enter this as a new bug report.
Are there plans to improve the support for Oracle databases or is it 
recommended to use a different on (e.g. mysql)?

Ulf Licht

Integration Architect
Enterprise Architecture Management

Esprit Europe GmbH
40882 Ratingen

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