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https://issues.apache.org/jira/browse/DERBY-6785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14252951#comment-14252951
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Mike Matrigali commented on DERBY-6785:
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I agree with rick, derby explicitly does not support direct access to the
COLUMNDATATYPE. Derby provides
jdbc standard interfaces to look at metadata. While it may have worked in the
past this was an accident. Some day
derby may want to change class that implements COLUMNDATATYPE internally and
then it would not work at all
for an old client to access a new database as it would not have a class that
understood the new type.
Do post if you have any other examples of the marshaling error that do not
involve directly querying derby private
system catalog data. Your initial report mentioned problems with alter table
and creating indexes. My guess is that
if you are seeing that problem with your tool doing those operations, it may
indicate that the tool is again incorrectly
querying the private system catalog data.
> Latest JDBC driver from 10.11.1.1 gives exception when trying to connect to
> 10.10.2.0
> -------------------------------------------------------------------------------------
>
> Key: DERBY-6785
> URL: https://issues.apache.org/jira/browse/DERBY-6785
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.10.2.0
> Environment: Win 7, Win 8, Mac OSX and Ubuntu 14.04
> Reporter: tariq rahiman
> Fix For: 10.11.1.3
>
> Attachments: DERBY-6785.sql, Screen Shot 2014-12-18 at 5.13.15
> PM.png, Screen Shot 2014-12-18 at 5.13.58 PM.png, derby.log, log.zip
>
>
> I have downloaded 10.11.1.1 and 10.10.2.0 from Apache Derby download and
> installed them in 2 separate machines.
> I have a GUI client that connects to the toursdb database of both versions
> using a JDBC connection that makes uses of derby.jar, derbyclient.jar and
> derbynet.jar
> I use the latest JDBC drivers from 10.11.1.1 to connect to both the database
> versions. The drivers I make use of are derby.jar, derbyclient.jar and
> derbynet.jar
> Connection to 10.10.2.0 is successful, but when I try to Alter/Drop Tables
> and Views, Create an Index or try to retrieve column information of tables, i
> get the below exception:
> The classpath settings for the two environments are identical and If i
> replace the derby.jar, derbyclient.jar and derbynet.jar of the latest release
> with the 10.10.2.0 ones, it works fine with 10.10.2.0.
> So my question is backward compatibility of the latest Apache Derby JDBC
> drivers. Can I use 10.11.1.1 jars to connect to 10.10.2.0 ?
> Exception:
> java.sql.SQLException: Error marshalling or unmarshalling a user defined
> type: org.apache.derby.catalog.types.TypeDescriptorImpl; local class
> incompatible: stream classdesc serialVersionUID = -5485274209578709396, local
> class serialVersionUID = -3812847726962874375
> at
> org.apache.derby.client.am.SQLExceptionFactory.getSQLException(Unknown Source)
> at org.apache.derby.client.am.SqlException.getSQLException(Unknown
> Source)
> at org.apache.derby.client.am.ClientResultSet.getString(Unknown Source)
> at \\...\\ .\\हिñçêČάй語简�?한\\.cꋦᚹ⣞ꊼ 8.a(Unknown Source)
> at com.common.ui.tree.eꏷꃒꆶᡰ.a(Unknown Source)
> at com.common.ui.tree.eꏷꃒꆶᡰ.wR(Unknown Source)
> at com.common.ui.tree.eꏷꃒꆶᡰ$1.process(Unknown Source)
> at com.common.ui.util.BackgroundThread.run(Unknown Source)
> Caused by: ERROR XN020: Error marshalling or unmarshalling a user defined
> type: org.apache.derby.catalog.types.TypeDescriptorImpl; local class
> incompatible: stream classdesc serialVersionUID = -5485274209578709396, local
> class serialVersionUID = -3812847726962874375
> at org.apache.derby.client.am.Cursor.get_UDT(Unknown Source)
> at org.apache.derby.client.am.Cursor.getString(Unknown Source)
> ... 6 more
> Caused by: java.io.InvalidClassException:
> org.apache.derby.catalog.types.TypeDescriptorImpl; local class incompatible:
> stream classdesc serialVersionUID = -5485274209578709396, local class
> serialVersionUID = -3812847726962874375
> at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:617)
> at
> java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1622)
> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
> ... 8 more
> Let me know if you need any more information
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