tengo los siguienes parametros

export CLUSTERNAME=slony_example
export MASTERDBNAME=pgbench
export SLAVEDBNAME=pgbenchslave
export MASTERHOST=localhost
export SLAVEHOST=localhost
export REPLICATIONUSER=pgsql
export PGBENCHUSER=pgbench

#creo la Bd Maestra
createdb -O $PGBENCHUSER -h $SLAVEHOST $SLAVEDBNAME

# creo la Bd Sclavo
createdb -O $PGBENCHUSER -h $SLAVEHOST $SLAVEDBNAME

#creo el lenguage plpgsql
createlang plpgsql -h $MASTERHOST $MASTERDBNAME


#esta parte no se para que es

pgbench -i -s 1 -U $PGBENCHUSER -h $MASTERHOST $MASTERDBNAME

#copio la estrucutra y los datos a la bd scalvo
pg_dump -s -U $REPLICATIONUSER -h $MASTERHOST $MASTERDBNAME | psql -U
$REPLICATIONUSER -h $SLAVEHOST $SLAVEDBNAME

# ejecuto
slon $CLUSTERNAME "dbname=$MASTERDBNAME user=$REPLICATIONUSER
host=$MASTERHOST"

#ejecuto
slon $CLUSTER "dbname=$DBNAME1 user=$SLONY_USER"

creo un script
#!/bin/sh

slonik <<_EOF_
        #--
    # define the namespace the replication system uses in our example it is
    # slony_example
        #--
        cluster name = $CLUSTERNAME;

        #--
    # admin conninfo's are used by slonik to connect to the nodes one for
each
    # node on each side of the cluster, the syntax is that of PQconnectdb in
    # the C-API
        # --
        node 1 admin conninfo = 'dbname=$MASTERDBNAME host=$MASTERHOST
user=$REPLICATIONUSER';
        node 2 admin conninfo = 'dbname=$SLAVEDBNAME host=$SLAVEHOST
user=$REPLICATIONUSER';

        #--
    # init the first node.  Its id MUST be 1.  This creates the schema
    # _$CLUSTERNAME containing all replication system specific database
    # objects.

        #--
        init cluster ( id=1, comment = 'Master Node');

        #--
    # Because the history table does not have a primary key or other unique
    # constraint that could be used to identify a row, we need to add one.
    # The following command adds a bigint column named
    # _Slony-I_$CLUSTERNAME_rowID to the table.  It will have a default
value
    # of nextval('_$CLUSTERNAME.s1_rowid_seq'), and have UNIQUE and NOT NULL
    # constraints applied.  All existing rows will be initialized with a
    # number
        #--
        table add key (node id = 1, fully qualified name =
'public.history');

        #--
    # Slony-I organizes tables into sets.  The smallest unit a node can
    # subscribe is a set.  The following commands create one set containing
    # all 4 pgbench tables.  The master or origin of the set is node 1.
        #--
        create set (id=1, origin=1, comment='All pgbench tables');
        set add table (set id=1, origin=1, id=1, fully qualified name =
'public.accounts', comment='accounts table');
        set add table (set id=1, origin=1, id=2, fully qualified name =
'public.branches', comment='branches table');
        set add table (set id=1, origin=1, id=3, fully qualified name =
'public.tellers', comment='tellers table');
        set add table (set id=1, origin=1, id=4, fully qualified name =
'public.history', comment='history table', key = serial);

        #--
    # Create the second node (the slave) tell the 2 nodes how to connect to
    # each other and how they should listen for events.
        #--

        store node (id=2, comment = 'Slave node');
        store path (server = 1, client = 2, conninfo='dbname=$MASTERDBNAME
host=$MASTERHOST user=$REPLICATIONUSER');
        store path (server = 2, client = 1, conninfo='dbname=$SLAVEDBNAME
host=$SLAVEHOST user=$REPLICATIONUSER');
        store listen (origin=1, provider = 1, receiver =2);
        store listen (origin=2, provider = 2, receiver =1);
_EOF_

corro el script

./slonik.sh

y no tengo problemas

el problema  es cuando ejecuto el
#!/bin/sh
slonik <<_EOF_
    # ----
    # This defines which namespace the replication system uses
    # ----
    cluster name = $CLUSTERNAME;

    # ----
    # Admin conninfo's are used by the slonik program to connect
    # to the node databases.  So these are the PQconnectdb arguments
    # that connect from the administrators workstation (where
    # slonik is executed).
    # ----
    node 1 admin conninfo = 'dbname=$MASTERDBNAME host=$MASTERHOST
user=$REPLICATIONUSER';
    node 2 admin conninfo = 'dbname=$SLAVEDBNAME host=$SLAVEHOST
user=$REPLICATIONUSER';

    # ----
    # Node 2 subscribes set 1
    # ----
    subscribe set ( id = 1, provider = 1, receiver = 2, forward = no);
_EOF_


me marca

WARN   remoteWorkerThread_1: transactions earlier than XID 1848303 are still
in progress
    WARN   remoteWorkerThread_1: data copy for set 1 failed - sleep 60
seconds

Alguien me puede ayudar

Saludos