Expert Advice: InfoSphere Streams ODBCDBG Failed to set isolation level If you receive "ODBCDBG Failed to set isolation level" when trying to connect InfoSphere Streams to an Oracle database. This problem occurs because the Streams default isolation level for the query element is "READ_UNCOMMITTED". Oracle does not support this isolation level. Use "READ_COMMITTED" instead. Click here for the InfoSphere Streams technical note.