Unmarshalling of value with oracle driver fails with:
2011-11-09 14:57:59,490 [ERROR] org.infinispan.loaders.jdbc.JdbcUtil - ISPN008009: I/O error while unmarshalling from stream
java.io.EOFException: Read past end of file
at org.jboss.marshalling.SimpleDataInput.eofOnRead(SimpleDataInput.java:126)
at org.jboss.marshalling.SimpleDataInput.readUnsignedByteDirect(SimpleDataInput.java:263)
at org.jboss.marshalling.SimpleDataInput.readUnsignedByte(SimpleDataInput.java:224)
at org.jboss.marshalling.river.RiverUnmarshaller.start(RiverUnmarshaller.java:1182)
at org.infinispan.marshall.jboss.AbstractJBossMarshaller.startObjectInput(AbstractJBossMarshaller.java:113)
at org.infinispan.marshall.VersionAwareMarshaller.startObjectInput(VersionAwareMarshaller.java:156)
at org.infinispan.marshall.VersionAwareMarshaller.objectFromByteBuffer(VersionAwareMarshaller.java:112)
at org.infinispan.marshall.AbstractMarshaller.objectFromInputStream(AbstractMarshaller.java:104)
at org.infinispan.loaders.jdbc.JdbcUtil.unmarshall(JdbcUtil.java:88)
at E04.main(E04.java:38)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.inubit.ibis.configuration.Bootstrap.main(Bootstrap.java:66)
org.infinispan.loaders.CacheLoaderException: I/O error while unmarshalling from stream
at org.infinispan.loaders.jdbc.JdbcUtil.unmarshall(JdbcUtil.java:91)
at E04.main(E04.java:38)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.inubit.ibis.configuration.Bootstrap.main(Bootstrap.java:66)
Caused by: java.io.EOFException: Read past end of file
at org.jboss.marshalling.SimpleDataInput.eofOnRead(SimpleDataInput.java:126)
at org.jboss.marshalling.SimpleDataInput.readUnsignedByteDirect(SimpleDataInput.java:263)
at org.jboss.marshalling.SimpleDataInput.readUnsignedByte(SimpleDataInput.java:224)
at org.jboss.marshalling.river.RiverUnmarshaller.start(RiverUnmarshaller.java:1182)
at org.infinispan.marshall.jboss.AbstractJBossMarshaller.startObjectInput(AbstractJBossMarshaller.java:113)
at org.infinispan.marshall.VersionAwareMarshaller.startObjectInput(VersionAwareMarshaller.java:156)
at org.infinispan.marshall.VersionAwareMarshaller.objectFromByteBuffer(VersionAwareMarshaller.java:112)
at org.infinispan.marshall.AbstractMarshaller.objectFromInputStream(AbstractMarshaller.java:104)
at org.infinispan.loaders.jdbc.JdbcUtil.unmarshall(JdbcUtil.java:88)
... 6 more

Solution:
In AbstractMarshaller.objectFromInputStream is assumed, that the available() method from the incoming InputStream returns the size of data.
But this is optional, so the InputStream from the oracle driver returns 0. So implementation of objectFromInputStream must be changed to avoid usage of available().