* @exception ServantAlreadyActive if an error occurs
*/
protected synchronized void add( byte[] oid, Servant servant )
throws ObjectAlreadyActive, ServantAlreadyActive
{
ByteArrayKey oidbak = new ByteArrayKey (oid);
/* an inCarnation and activation with the same oid has
priority, a reactivation for the same oid blocks until
etherealization is complete */