Do you know where I can get an answer to the following question: Why do I get the following error: "ORA-12541: TNS:no listener" on my win 2000 professional client when trying to connect using "SQLPLUS lanier/lanier@cde <mailto:lanier/lanier@cde> ?" 1. The client is a separate box from the server running oracle v8.1.6. 2. The listener service on the server is running. 3. Am able to connect using the same string on the server. 4. The SQLNET trace file reveals the following: niotns: Calling address: (DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=172.18.118.51)(PORT= 1521)))(CONNECT_DATA=(SERVICE_NAME=cde)(CID=(PROGRAM=C:\Oracle\Ora81\bin\SQL PLUS.EXE)(HOST=CMT01)(USER=jkelton))(SERVER=dedicated))) . . . nttbnd2addr: entry nttbnd2addr: port resolved to 1151 nttbnd2addr: using host IP address: 127.0.0.1 nttbnd2addr: exit . . . nttcnp: Validnode Table IN use; err 0x0 nttcnp: creating a socket. nttcnp: exit nttcni: entry nttcni: trying to connect to socket 204. ntt2err: entry ntt2err: soc 204 error - operation=1, ntresnt[0]=511, ntresnt[1]=61, ntresnt[2]=0 ntt2err: exit nttcni: exit nttcon: exit nserror: entry nserror: nsres: id=0, op=65, ns=12541, ns2=12560; nt[0]=511, nt[1]=61, nt[2]=0; ora[0]=0, ora[1]=0, ora[2]=0 nsopen: unable to open transport . . . nioqper: error from nscall nioqper: nr err code: 0 nioqper: ns main err code: 12541 nioqper: ns (2) err code: 12560 nioqper: nt main err code: 511 nioqper: nt (2) err code: 61 nioqper: nt OS err code: 0 niomapnserror: entry niqme: entry niqme: reporting NS-12541 error as ORA-12541 niqme: exit
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