ORA-12154: TNS:could not resolve service name : Oracle

C:\oracle\ora92>lsnrctl status

LSNRCTL for 32-bit Windows: Version 9.2.0.7.0 - Production on 05-JUL-2013 11:24:18

Copyright (c) 1991, 2002, Oracle Corporation.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 9.2.0.7.0 - Production
Start Date                05-JUL-2013 09:48:18
Uptime                    0 days 1 hr. 36 min. 2 sec
Trace Level               off
Security                  OFF
SNMP                      OFF
Listener Parameter File   C:\oracle\ora92\network\admin\listener.ora
Listener Log File         C:\oracle\ora92\network\log\listener.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=Mather)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "ZM" has 2 instance(s).
  Instance "ZM", status UNKNOWN, has 1 handler(s) for this service...
  Instance "ZM", status READY, has 1 handler(s) for this service...
The command completed successfully