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https://issues.apache.org/jira/browse/DERBY-6124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14251926#comment-14251926
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Mike Matrigali commented on DERBY-6124:
---------------------------------------

The latest derby releases can be found at db.apache.org/derby/releases.  

Do note that DERBY-6124 was specifically about a class in our testing suite, 
and the fix was to 
change the Price class in the testing suite.  So unless you are running the 
Derby test suites it seems like
this is not the problem.

I am also unclear on the description of your problem.  Is this a network server 
problem where you are using
10.11.1.1 client to talk to a 10.10.2.0 server.  Or is this a database upgrade 
problem where you are using 
10.11.1.1 software to talk to a database created with 10.10.2.0?

The error talks about a problem in a user defined type.  Does your application 
create user defined types?  
There may be more information in derby.log.  

> Marshalling error in JDBCDriverTest as part of CompatibilityTest
> ----------------------------------------------------------------
>
>                 Key: DERBY-6124
>                 URL: https://issues.apache.org/jira/browse/DERBY-6124
>             Project: Derby
>          Issue Type: Bug
>          Components: Test
>    Affects Versions: 10.10.1.1
>         Environment: Java SE 1.7.0-b147, Solaris 11, x86
> --------- Derby Information --------
> [/localhome/tendril4.2/work/run/27358744/jars/sane/derby.jar] 10.10.1.1 - 
> (1458268)
> [/localhome/tendril4.2/work/run/27358744/jars/sane/derbytools.jar] 10.10.1.1 
> - (1458268)
> [/localhome/tendril4.2/work/run/27358744/jars/sane/derbynet.jar] 10.10.1.1 - 
> (1458268)
> [/localhome/tendril4.2/work/run/27358744/jars/sane/derbyclient.jar] 10.10.1.1 
> - (1458268)
>            Reporter: Dag H. Wanvik
>            Assignee: Rick Hillegas
>             Fix For: 10.10.2.0, 10.11.1.1
>
>         Attachments: Screen Shot 2014-12-17 at 4.50.26 PM.png, 
> derby-6124-01-aa-givePriceAserialVersionUID.diff
>
>
> Internal Oracle testing of RC 2 testing of 10.10 (Tendril Request 5574239 
> Tendril Task  3614491 ):
> ********* Diff file 
> derbyall/derbynetclientmats/DerbyNetClient/encodingTests/TestEnc.diff
> *** Start: TestEnc jdk1.7.0 DerbyNetClient derbynetclientmats:encodingTests 
> 2013-03-21 14:55:59 ***
> derbyTesting.encoding can only be used with jdk15, skipping test
> *** End:   TestEnc jdk1.7.0 DerbyNetClient derbynetclientmats:encodingTests 
> 2013-03-21 14:55:59 ***
> ********* Diff file 
> derbyall/derbynetclientmats/DerbyNetClient/derbynetclientmats/CompatibilityTest.diff
> *** Start: CompatibilityTest jdk1.7.0 DerbyNetClient 
> derbynetclientmats:derbynetclientmats 2013-03-21 14:55:59 ***
> 0 add
> > .E.
> > There was 1 error:
> > 1) 
> > testJDBCDriver(org.apache.derbyTesting.functionTests.tests.junitTests.compatibility.JDBCDriverTest)java.sql.SQLException:
> >  Error marshalling or unmarshalling a user defined type: 
> > org.apache.derbyTesting.functionTests.tests.lang.Price; local class 
> > incompatible: stream classdesc serialVersionUID = 102726277789621992, local 
> > class serialVersionUID = 1827170030595550895
> > Caused by: org.apache.derby.client.am.SqlException: Error marshalling or 
> > unmarshalling a user defined type: 
> > org.apache.derbyTesting.functionTests.tests.lang.Price; local class 
> > incompatible: stream classdesc serialVersionUID = 102726277789621992, local 
> > class serialVersionUID = 1827170030595550895
> >     ... 22 more
> > Caused by: java.io.InvalidClassException: 
> > org.apache.derbyTesting.functionTests.tests.lang.Price; local class 
> > incompatible: stream classdesc serialVersionUID = 102726277789621992, local 
> > class serialVersionUID = 1827170030595550895
> >     ... 25 more
> > FAILURES!!!
> > Tests run: 2,  Failures: 0,  Errors: 1
> Test Failed.
> *** End:   CompatibilityTest jdk1.7.0 DerbyNetClient 
> derbynetclientmats:derbynetclientmats 2013-03-21
>  14:56:04 ***
> Looking at the Price class I see it doesn't have an explicit 
> serialVersionUID. 



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