Can Connect via Database Control but Cannot Connect from Enterprise Manager

Question

Hi experts,
This is a 10g database on a Windows server.
when I remote into the server:
- I CAN connect via the web-based Database Control
- I CANNOT connect to any db/instance via regular Ent Mgr - get the ugly "ORA-12154 TNS: could not resolve the connect identifier specified" error.
I thought both tools used the same connection files (tnsnames, listerner etc), but maybe not.
When db control connects, but Enterprise Manager cannot, what should I check to find the problem?
Thank you.
John

Answer 1

Thanks madrid.
I eventually got it to work by changing the tnsnames.ora in the client_1 folder
This is the original:
FS9ENFP1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNCLAFDB)(PORT = 1521))
(CONNECT_DATA =
(SID = FS9ENFP1)
(SERVER = DEDICATED)
ORCL=
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNCLAFDB)(PORT = 1521))
(CONNECT_DATA =
(SID = orcl)
(SERVER = DEDICATED)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
I removed the EXTPROC entry and added entries for the ORCL and FS9ENFP1 databases, specifying server_database like this:
FS9ENFP1_PNCLAFDB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = PNCLAFDB)(PORT = 1521))
(CONNECT_DATA =
(SID = FS9ENFP1)
(SERVER = DEDICATED)
Not really sure WHY it is necessary to list an instance twice, once without server name and another with server name... but EM is able to connect now. I simply modeled tnsnames after another Oracle server where EM was able to connect.
John