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From "Jeremy Bauer (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-702) MappingTool fails requires appropriate DESCSTAT parm value on DB2 for z/OS
Date Mon, 25 Aug 2008 15:39:44 GMT
MappingTool fails requires appropriate DESCSTAT parm value on DB2 for z/OS
--------------------------------------------------------------------------

                 Key: OPENJPA-702
                 URL: https://issues.apache.org/jira/browse/OPENJPA-702
             Project: OpenJPA
          Issue Type: Bug
          Components: docs
    Affects Versions: 1.3.0
         Environment: OpenJPA trunk, DB2 for z/OS V8, IBM JCC type 4 JDBC driver.
            Reporter: Jeremy Bauer
            Priority: Minor


When running with the IBM JCC driver to a DB2 on z/OS system the mapping tool may fail with
the stack trace below if the DB2 DESCSTAT subsystem parameter is not set to 'YES'.  This parameter
controls whether column names are returned in a JDBC metadata query.  Specifically, the mapping
tool uses the JDBC-spec defined column names to query column metadata and that query will
fail if DESCSTAT is set to 'NO'.  By default DB2 on z/OS version 8 and later set the DESCSTAT
parameter to 'YES'.  However, if it gets set to 'NO' , explicitly or possibly via a DB migration,
the mapping tool will fail.

org.apache.openjpa.persistence.PersistenceException: [ibm]
 [db2][jcc][10150][10300] Invalid parameter: Unknown column name TABLE_SCHEM.
 	at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:553)
 	at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:453)
 	at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerF
actory.java:159)
 	at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory
.java:119)
 	at org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.
java:189)
 	at org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFact
ory.java:142)
 	at org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(Enti
tyManagerFactoryImpl.java:192)
 	at  ...

I will post a patch shortly that includes a documentation update for the DB2 known issues
section of the doc.


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