Message Title

The same error occurred in the latest Hibernate master branch (5.5.0-SNAPSHOT) when using Informix JDBC Driver version 3.70.JC8.

Caused by: java.sql.SQLException: Can't convert fromnull
	at com.informix.util.IfxErrMsg.getSQLMinorException(IfxErrMsg.java:547)
	at com.informix.jdbc.IfxObject.fromCharacterStream(IfxObject.java:706)
	at com.informix.jdbc.IfxValue.a(IfxValue.java:929)
	at com.informix.jdbc.IfxPreparedStatement.setCharacterStream(IfxPreparedStatement.java:4440)
	at org.hibernate.type.descriptor.sql.ClobTypeDescriptor$3$1.doBind(ClobTypeDescriptor.java:129)
	at org.hibernate.type.descriptor.sql.BasicBinder.bind(BasicBinder.java:73)
	at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:276)
	at org.hibernate.type.AbstractStandardBasicType.nullSafeSet(AbstractStandardBasicType.java:271)
	at org.hibernate.type.AbstractSingleColumnStandardBasicType.nullSafeSet(AbstractSingleColumnStandardBasicType.java:39)
	at org.hibernate.persister.entity.AbstractEntityPersister.dehydrate(AbstractEntityPersister.java:2948)
	at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3245)
	... 34 more

@Override
public boolean useInputStreamToInsertBlob () {
    return false;
}

Conversely, when using the Informix JDBC Driver version 4.10.JC12, everything is OK. If useInputStreamToInsertBlob () returns false, the database returns incorrect data.