TNSping ok..can't connect with sqlPlus ...just stopped working

Question

Hey Guys,
I have an Oracle Server running for the last year with little issues.
The lister just stopped working...
I can TNSPing ok...I just can't connect with toad or sqlplus anymore from another computer..
I can connect with sqlplus on the same computer...just not from any other computers.
=================================================================
C:\Documents and Settings\Phil>tnsping elvis 5
TNS Ping Utility for 32-bit Windows: Version 10.1.0.2.0 - Production on 17-JUL-2008 11:10:28
Copyright (c) 1997, 2003, Oracle. All rights reserved.
Used parameter files:
C:\Oracle\product\10.1.0\Client_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=7.7.1.1)(PORT=1521))(CONNECT_DATA=(SID=orcl)))
OK (70 msec)
OK (40 msec)
OK (50 msec)
OK (50 msec)
OK (40 msec)
C:\Documents and Settings\Phil>
==================================================
Listener status info
================================================
LSNRCTL>
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.1.0.4.0 - Production
Start Date 17-JUL-2008 10:45:26
Uptime 0 days 0 hr. 29 min. 2 sec
Trace Level off
Security ON: Password or Local OS Authentication
SNMP OFF
Listener Parameter File D:\oracle\product\10.1.0\Db_1\network\admin\listener.ora
Listener Log File D:\oracle\product\10.1.0\Db_1\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=elvis)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=elvis)(PORT=8080))(Presentation=HTTP)(Session=RAW))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=elvis)(PORT=2100))(Presentation=FTP)(Session=RAW))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "orcl" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>
LSNRCTL>
LSNRCTL>
LSNRCTL>
==================================================
Listener.ora
# listener.ora Network Configuration File: D:\oracle\product\10.1.0\Db_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = D:\oracle\product\10.1.0\Db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = elvis)(PORT = 1521))
====================================================================
sqlnet.ora
SQLNET.AUTHENTICATION_SERVICES= (NTS)
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
====================================================================
tnsnames.ora
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = elvis)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = orcl)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
=============================================================================
I am getting this error from sqlnet.log
Fatal NI connect error 12638, connecting to:
(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
VERSION INFORMATION:
TNS for 32-bit Windows: Version 10.1.0.4.0 - Production
Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 10.1.0.4.0 - Production
Time: 17-JUL-2008 10:23:14
Tracing not turned on.
Tns error struct:
ns main err code: 12638
TNS-12638: Credential retrieval failed
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0

Answer 1

LSNRCTL>
LSNRCTL> services
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=elvis)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "orcl" has 2 instance(s).
Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Instance "orcl", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:18 refused:0 state:ready
LOCAL SERVER
Service "orclXDB" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1002 state:ready
DISPATCHER <machine: ELVIS, pid: 2284>
(ADDRESS=(PROTOCOL=tcp)(HOST=elvis)(PORT=1027))
The command completed successfully
LSNRCTL>