probleme de connexion forms-oracle

bonjour tt le monde,
j'ai installé oracle8i et forms6i sur ma machine avec succés
mais quand je veux faire une connextion entre eux l'erreur suivante est signalé ...

Code:

ORA-12541 :TNS: l'adresse symbolique n'a pas pu etre resolu

voila mon tns_names.ora de oracle

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
# TNSNAMES.ORA Network Configuration File: C:\Oracle\Ora81\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
 
RESSURV =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = serveur)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = RESSURV)
    )
  )
 
EXTPROC_CONNECTION_DATA =
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
    (CONNECT_DATA =
      (SID = PLSExtProc)
      (PRESENTATION = RO)
    )
  )

et le voila pour forms6i

Code:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
Beq-local.world =
  (DESCRIPTION = 
    (ADDRESS_LIST = 
        (ADDRESS = 
          (COMMUNITY = beq.world)
          (PROTOCOL = BEQ)
          (PROGRAM = oracle73)
          (ARGV0 = oracle73ORCL)
          (ARGS = '(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))')
        )
    )
    (CONNECT_DATA = (SID = ORCL)
    )
  )
Tcp-loopback.world = 
  (DESCRIPTION = 
    (ADDRESS_LIST = 
        (ADDRESS = 
          (COMMUNITY = tcp.world)
          (PROTOCOL = TCP)
          (Host = 127.0.0.1)
          (Port = 1521)
        )
    )
    (CONNECT_DATA = (SID = ORCL)
    )
  )
Example1.world = 
  (DESCRIPTION = 
    (ADDRESS_LIST = 
        (ADDRESS = 
          (COMMUNITY = tcp.world)
          (PROTOCOL = TCP)
          (Host = Production1)
          (Port = 1521)
        )
    )
    (CONNECT_DATA = (SID = SID1)
    )
  )
Example2.world = 
  (DESCRIPTION = 
    (ADDRESS_LIST = 
        (ADDRESS = 
          (COMMUNITY = spx.world)
          (PROTOCOL = SPX)
          (Service = Server_lsnr)
        )
    )
    (CONNECT_DATA = (SID = ORCL)
    )
  )
Example3.world = 
  (DESCRIPTION = 
    (ADDRESS_LIST = 
        (ADDRESS = 
          (COMMUNITY = nmp.world)
          (PROTOCOL = NMP)
          (Server = FinanceServer1)
          (Pipe = ORAPIPE)
        )
    )
    (CONNECT_DATA = (SID = ORCL)
    )
  )

merci d'avance pour votre réponse