Sorry, everyone!
  I have received a copy of the question I have delivered a moment before. And I found the content becomes a mess. Sorry!
  In fact, I just add some rows to the "Replicating Your First Database" chapt of the "Slony-I Administration" documentation. Here is it!


  In 1.2. Preparing the databases, after  
    pgbench -i -s 1 -U $PGBENCHUSER -h $MASTERHOST $MASTERDBNAME
  add
    $            psql -U $REPLICATIONUSER -h $MASTERHOST $MASTERDBNAME 
    pgbench=#    CREATE TABLE object(name varchar, PRIMARY KEY(oid)); INSERT INTO object VALUES('aaa');
    pgbench=#    \q

  In 1.3 Configuring the Database for Replication, after 
    set add table (set id=1, origin=1, id=4, fully qualified name = 'public.history', comment='history table', key = serial);
  add
    set add table (set id=1, origin=1, id=5, fully qualified name = 'public.object', comment='table with oid');

  
  And to see the result, i just use:
     $          psql -U $REPLICATIONUSER -h $MASTERHOST $MASTERDBNAME 
     pgbench#   SELECT oid, * FROM object;
     pgbench#   \q
  and 
     $               psql -U $REPLICATIONUSER -h $SLAVEHOST $SLAVEDBNAME 
     pgbenchslave#   SELECT oid, * FROM object;
     pgbenchslave#   \q