Serialization Problem. Unable to load to deserialize result

[ofgonzalezr]

Hi,
I´m trying to extract an object Collection stored in a database Oracle from an EntityBean CMP. The field in the database is Long Row type. When the EJB try to preform this operation, the next error happens:

java.sql.SQLException: Unable to load to deserialize result: java.io.InvalidClassException: co.edu.uniandes.cronos.vos.tasklog.TasklogVO; local class incompatible: stream classdesc serialVersionUID = -106573141962671489, local class serialVersionUID = -3945467065227243787
at org.jboss.ejb.plugins.cmp.jdbc.JDBCUtil.convertToObject(JDBCUtil.java:291)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCUtil.access$500(JDBCUtil.java:53)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCUtil$5.readResult(JDBCUtil.java:555)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCUtil$AbstractResultSetReader.get(JDBCUtil.java:400)
at org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCAbstractCMPFieldBridge.loadArgumentResults(JDBCAbstractCMPFieldBridge.java:424)

The objects are stored frecuently in the database with diferent class version, but I need to extract them anyway.

It's urgent requirement, any one can help me out.

Thanks,
OG

[starksm64]

This is a basic java serialization problem. The serialVersionUID in the TasklogVO class has not been explicitly set and the class has changed in an incompatible way according to the default java serialization calculation of compatibility.

[ofgonzalezr]

Is There some way to skip the version comparation? The problem is that this restriction can´t be avoid.

Thanks.

[starksm64]

Short of replacing code in the jvm, no.