Oracle in not responsing to connect requests via sqlplus

Hi,
I am trying to connect to oracle 10.2.0.3 on linux via sqlplus.
All the oracle process are up.
tnsping and ping are response OK.
I check the uptime, and it show:
01:58:21 up 3 days, 23:47, 1 user, load average: 0.09, 0.03, 0.01
THE PROBLEM IS :
Oracle is not responsing at all to any connect requests:
sqlplus xxx/yyy@prd
SQL*Plus: Release 10.2.0.3.0 - Production on Fri Feb 1 00:23:56 2008
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Quit
I set the following parameters in the sqlnet.ora:
trace_level_client = 16
trace_file_client = client
trace_directory_client = /software/oracle/admin/prd/net_log
trace_unique_client = on
log_directory_client = /software/oracle/admin/prd/net_log/
trace_level_server = 16
trace_file_server = svr
trace_directory_server = /software/oracle/admin/prd/net_log/
trace_unique_server = on
log_file_server = svr
log_directory_server = /software/oracle/admin/prd/net_log/
I couldnt find any error in the trace files that had been generated.
Does one have any suggestion ?
Thanks.

Can you post the last 100 or so lines from a client trace that is hanging (before you kill the hanging login)?
The advice to check the listener log on the server is sound, as would be a look at the server's alert<sid>.log and an strace output of the attempt:
strace sqlplus xxx/yyy@prd
The advice to delete your spfile and increase PROCESSES is clearly unwarranted, since you have provided no indication that you are exceeding that resource limit. Furthermore you are not receiving "ORA-00020: maximum number of processes (%s) exceeded", which is what we would expect in such an eventuality.
Regards,
Jeremiah Wilton
ORA-600 Consulting
http://www.ora-600.net

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Handle:      784786
Status Level:      Newbie
Registered:      Jul 27, 2010
Total Posts:      211
Total Questions:      81 (65 unresolved)
Name      Learner
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"ORA-12154: TNS:could not resolve the connect identifier specified" from what I've seen on this site is a major problem for a lot of people, but I did not find a reference to my specfic problem.
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Ready for this?? (some may have guessed this already) The problem is the "@" in my password. After looking closely at the trace logs, I noticed that one of the entries was...
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Copyright (c) 1982, 2005, Oracle. All rights reserved.
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SQL>
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user8100001 wrote:
Hi All,
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Only letters, numbers, and the symbols “#”, “_” and “$” are acceptable in a password.
And password must not be a reserved word (look into v$reserved_words).
And as You can see sysman password containt "@" - this is not allowed.
>
My specific issue was the following:
I can....
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- Connect via sqlplus as "/as sysdba"
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Ready for this?? (some may have guessed this already) The problem is the "@" in my password. After looking closely at the trace logs, I noticed that one of the entries was...
[09-MAR-2009 08:23:12:921] nnftrne: Original name: ssw0rd
Remember that the format for connecting on one line at the dos prompt is
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sqlplus username/password@oraidm
but in Your case @symbol already is in password.
Here can be used a small trick
sqlplus sysman/"p@ssw0rd"@oraid
>
or you can do the following...
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SQL*Plus: Release 10.2.0.1.0 - Production on Mon Mar 9 09:08:50 2009
Copyright (c) 1982, 2005, Oracle. All rights reserved.
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So...the question is, why does Oracle even allow "@" in the password if it will become an issue with sqlplus??? Also, if you can't (or shouldn't) use it, why isn't it documented somewhere? At the least I would expect the installer to at least warn you ahead of time that an "@" is not suggested. I don't remember it being there. Maybe it's just me and I'm just missing this info somewhereActually Oracle is not allowing this if You will just try to
alter user scott identidified by p@ssword
You will get error message (ORA-00922: missing or invalid option), but You can
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Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=220
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 20-MAY-2010 00:02:39
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=224
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 21-MAY-2010 22:28:28
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=224
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 22-MAY-2010 02:29:22
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=228
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 22-MAY-2010 10:39:02
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=664
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 23-MAY-2010 01:50:22
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=224
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 24-MAY-2010 08:58:52
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=416
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 25-MAY-2010 22:48:47
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=196
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 26-MAY-2010 07:17:43
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=764
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 27-MAY-2010 23:53:01
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=700
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 28-MAY-2010 21:35:44
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=524
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 30-MAY-2010 00:44:22
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=796
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 30-MAY-2010 11:41:33
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=732
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 31-MAY-2010 01:28:05
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=716
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 03-JUN-2010 00:46:50
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=196
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 03-JUN-2010 02:32:07
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=1740
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 03-JUN-2010 02:35:19
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=3488
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 03-JUN-2010 02:43:06
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=240
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 03-JUN-2010 02:50:03
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.2.0\db_2\network\admin\listener.ora
Log messages written to D:\oracle\product\10.2.0\db_2\network\log\listener.log
Trace information written to D:\oracle\product\10.2.0\db_2\network\trace\listener.trc
Trace level is currently 0
Started with pid=3104
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.51)(PORT=1521)))
TNS-12545: Connect failed because target host or object does not exist
TNS-12560: TNS:protocol adapter error
TNS-00515: Connect failed because target host or object does not exist
32-bit Windows Error: 49: Unknown error
No longer listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
Thanks,
Srini

Thanks again
Here is the result of the lsnrctl status
D:\Documents and Settings\Administrator>lsnrctl status
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 03-JUN-2010 04:13
:06
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Produ
ction
Start Date 03-JUN-2010 03:45:46
Uptime 0 days 0 hr. 27 min. 22 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File D:\oracle\product\10.2.0\db_2\network\admin\listener.o
ra
Listener Log File D:\oracle\product\10.2.0\db_2\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.50)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "emp" has 1 instance(s).
Instance "emp", status READY, has 1 handler(s) for this service...
Service "empXDB" has 1 instance(s).
Instance "emp", status READY, has 1 handler(s) for this service...
Service "emp_XPT" has 1 instance(s).
Instance "emp", status READY, has 1 handler(s) for this service...
Service "ora10" has 1 instance(s).
Instance "ora10", status BLOCKED, has 1 handler(s) for this service...
Service "ora10_XPT" has 1 instance(s).
Instance "ora10", status BLOCKED, 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...
Service "orcl_XPT" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
======================
Now i have tried sqlplus / as sysdba
D:\Documents and Settings\Administrator>sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Jun 3 04:15:18 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Release 10.2.0.1.0 - Production
SQL>
=======================
Then tried to connect to orcl database which has sid also orcl and gave the correct pass word, but still found the same error
D:\Documents and Settings\Administrator>sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Jun 3 04:15:18 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Release 10.2.0.1.0 - Production
SQL> conn sys@orcl as sysdba
Enter password:
ERROR:
ORA-12170: TNS:Connect timeout occurred
Warning: You are no longer connected to ORACLE.
SQL>
Could please let me know what is missing here from my side
Regards,
Srini

Not able to connect REMOTE via Wi-fi on your PC ? I figured out why

I have read endless forum posts and spoken to Apple techs who could not help me at all on this. I felt like i was talking to snake oil salesmen at one point with the outlandish nonsense they were telling me.
Anyhow i have a pc and use Apple Remote to control itunes and for some reason every now and then, usually around the time of software updates remote would just stop working for no reason.
I try to connect to library and punch in the four number code but it wouldnt connect. Time and time again i try and nothing. Itunes is seeing the phone but wont connect the remote to it.
I just realized about ten minutes ago why. Blutooth.
I had turned on my Blutooth headset last night while in my car and when i got home had remote stop working. It didnt dawn on me til this morning that "hey the blutooth icon is on" and once i turned it off the **** thing connected almost instantly.
I have read so many posts from people that have had this problem and spoken for hours literally to tech support to no avail and this just makes me happy as **** to have figured this out.
Sorry if someone has already posted this and im just repeated but im just so freaking happy i didnt bother to look first hoping that i might be able to save someone some headaches like ive had.
Summary:
-Remote doesnt work and you have a PC
-Turn off Blutooth and it should work again
-Now smile and a take a deep cleansing breath "

Handle:      784786
Status Level:      Newbie
Registered:      Jul 27, 2010
Total Posts:      211
Total Questions:      81 (65 unresolved)
Name      Learner
Also Close your thread please

Not able to connect sqlplus in linux

Hi,
I am using Enterprise Linux 5. I am not able to connect database using sqlplus.
After entering sqlplus command, getting following error:
[ra10g@blue ~] sqlplus / as sysdba
/oracle/oa10g/10204/bin/sqlplus: Line 41: syntex error near unexpected token 'set'
/oracle/oa10g/10204/bin/sqlplus: Line 41: 'if ("$ORASID" == '') set ORASID="*"'
I had checked all the enviorment variables.
ORACLE_HOME = /oracle/oa10g/10204
ORASID = orcl
LD_LIBRARY_PATH = /oracle/oa10g/10204/lib:/lib:/usr/lib
Please give me any solution regarding this.
Thanks in advance.
Would appriciate your prompt response.
Regards,
Vishal Patel

user11796357 wrote:
Re:
may be some enviromnet variable setting problem
ty this
export ORACLE_HOME=/oracle/oa10g/10204
export Oracle_SID=orclIf you actually did this, then you will fail. The variable is ORACLE_SID and the variable name is case sensitive.
If the database was already created with the SID orcl, check whether the SID exists in oratab (command -> tail /etc/oratab) and then you can source the oraenv file as follows
. oraenv
orcl
Note that sourcing is using the dot (period) and space before command. If you do not know what "source a file" means in bash, I strongly encourage you to spend some time with the bash tutorial on the net.

Typical resolution logic for client connection request (Oracle Database 11g)

Salam, hello everyone, I would know the process that oracle follows to connect a client to a database (local or remote connection) via this command : connect username/password[@connect_identifier].
Can someone help me with that?

The first decision is whether the connect request includes a connection string or not. Examples:
This does,
connect [email protected]
An this doesn't,
connect /
Your question regarding "LOCAL env var" I think is referring to client environment variables? They are tested with decisions for TNS_ADMIN,ORACLE_SID, and ORACLE_HOME at several points. Remember that the client process may be running on a remote machine, or on the server machine from the same Oracle Home as the instance or different.
That should give you a good start. If it doesn't, post your email and I'll send you a full description. The usual route for contacting authors is through the publisher, but we can short-circuit the process here.
Don't worry about Mr Bakker thinking that we do not understand SQL*Net. He has not seen any context, and his constructive criticism is based in incomplete data. You will soon understand SQL*Net better than most.
Please remove the diagram.

Can connect to local DB via SQLPlus but not via SQLDeveloper, all info incl

Have a database running on a new local Windows 7 Professional Machine with data, users, etc from an db import. Able to access database via sqlplus, run queries, etc. Cannot run from Oracle SQL Developer. Trying to use Connection Type Basic, Hostname localhost, port *1521*.
Using SID = xe I get:
Status: Failure -Test failed: Listener refused the connection with the following error: ORA-12518, TNS:listener could not hand off client connection The Connection descriptor used by the client was localhost:1521:xe
When I add a service in my listener.ora file for sid_name=xe and program_name=xe (which I include below), I get
ORA-12518, TNS:listener could not hand off client connection. The connection descriptor used by the client was localhost:1521:xe
Using Service name = xe I get:
Status: Failure -Test failed: Io exception: the Network Adapter could not establish the connection.
Here's every single piece of information I think you may possibly need to help me with the issue. [I've been trying to find the solution on these forums so I hope I haven't messed my settings up even more than they had been before.]
TNSNAMES.ORA (XE is the name of my local database):
XE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(service_name = XE)
(SERVER = DEDICATED)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
LISTENER.ORA
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = XE)
(ORACLE_HOME = C:\oraclexe\app\oracle\product\10.2.0\server)
(PROGRAM = XE)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
DEFAULT_SERVICE_LISTENER = (XE)
C:\Windows\system32>sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Sun Apr 25 19:36:15 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
SQL> select sysdate from dual;
SYSDATE
25-APR-10
SQL> exit
Disconnected from Oracle Database 10g Express Edition Release 10.2.0.1.0 - Produ
ction
C:\Windows\system32>tnsping xe
TNS Ping Utility for 32-bit Windows: Version 10.2.0.1.0 - Production on 25-APR-2
010 19:43:02
Copyright (c) 1997, 2005, Oracle. All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\10.2.0\server\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhos
t)(PORT = 1521)) (CONNECT_DATA = (service_name = XE) (SERVER = DEDICATED)))
OK (20 msec)
C:\Windows\system32>lsnrctl services
LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 25-APR-2010 19:46
:20
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
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 "XE" has 1 instance(s).
Instance "XE", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:10
LOCAL SERVER
The command completed successfully
Edited by: user1966631 on Apr 25, 2010 4:59 PM

Got it. No, no virtualization. Just Win7 64-bit computer running XE.
C:\Users\Gil>sqlplus ccxreg/ccxreg@XE
SQL*Plus: Release 10.2.0.1.0 - Production on Sun Apr 25 21:23:20 2010
Copyright (c) 1982, 2005, Oracle. All rights reserved.
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
listener.log
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 25-APR-2010 19:54:10
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is C:\oraclexe\app\oracle\product\10.2.0\server\network\admin\listener.ora
Log messages written to C:\oraclexe\app\oracle\product\10.2.0\server\network\log\listener.log
Trace information written to C:\oraclexe\app\oracle\product\10.2.0\server\network\trace\listener.trc
Trace level is currently 0
Started with pid=760
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC_FOR_XEipc)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Listener completed notification to CRS on start
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
25-APR-2010 19:55:46 * (CONNECT_DATA=(SID=xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=null))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=51031)) * establish * xe * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 2: No such file or directory
25-APR-2010 19:56:11 * (CONNECT_DATA=(SID=xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=51040)) * establish * xe * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 2: No such file or directory
25-APR-2010 19:56:18 * (CONNECT_DATA=(SID=xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=51043)) * establish * xe * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 2: No such file or directory
25-APR-2010 19:56:31 * (CONNECT_DATA=(SID=xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=51048)) * establish * xe * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 2: No such file or directory
25-APR-2010 19:56:34 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))(SERVICE_NAME=xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=51050)) * establish * xe * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 2: No such file or directory
25-APR-2010 19:56:37 * (CONNECT_DATA=(SID=xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=51052)) * establish * xe * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 2: No such file or directory
25-APR-2010 20:42:45 * (CONNECT_DATA=(SID=xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=null))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=52547)) * establish * xe * 12518
TNS-12518: TNS:listener could not hand off client connection
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
32-bit Windows Error: 2: No such file or directory
25-APR-2010 20:43:08 * (CONNECT_DATA=(SID=@xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=52558)) * establish * @xe * 12505
TNS-12505: TNS:listener does not currently know of SID given in connect descriptor
25-APR-2010 20:43:13 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))(SERVICE_NAME=@xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=Gil))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=52562)) * establish * @xe * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
25-APR-2010 21:03:00 * ping * 0
25-APR-2010 21:03:17 * ping * 0
TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production on 25-APR-2010 21:06:07
Copyright (c) 1991, 2005, Oracle. All rights reserved.
System parameter file is C:\oraclexe\app\oracle\product\10.2.0\server\network\admin\listener.ora
Log messages written to C:\oraclexe\app\oracle\product\10.2.0\server\network\log\listener.log
Trace information written to C:\oraclexe\app\oracle\product\10.2.0\server\network\trace\listener.trc
Trace level is currently 0
Started with pid=6836
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC_FOR_XEipc)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Listener completed notification to CRS on start
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
25-APR-2010 21:06:11 * service_register * CLRExtProc * 0
25-APR-2010 21:06:11 * service_register * CLRExtProc * 0
25-APR-2010 21:06:11 * service_update * CLRExtProc * 0
25-APR-2010 21:07:04 * (CONNECT_DATA=(SID=xe)(CID=(PROGRAM=)(HOST=__jdbc__)(USER=null))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=53945)) * establish * xe * 12505
TNS-12505: TNS:listener does not currently know of SID given in connect descriptor
25-APR-2010 21:07:55 * service_update * CLRExtProc * 0
25-APR-2010 21:09:35 * service_update * CLRExtProc * 0
25-APR-2010 21:11:15 * service_update * CLRExtProc * 0
25-APR-2010 21:12:55 * service_update * CLRExtProc * 0
25-APR-2010 21:14:35 * service_update * CLRExtProc * 0
25-APR-2010 21:16:16 * service_update * CLRExtProc * 0
25-APR-2010 21:17:56 * service_update * CLRExtProc * 0
25-APR-2010 21:19:38 * service_update * CLRExtProc * 0
25-APR-2010 21:21:21 * service_update * CLRExtProc * 0
25-APR-2010 21:23:02 * service_update * CLRExtProc * 0
25-APR-2010 21:23:20 * (CONNECT_DATA=(service_name=XE)(SID=XE)(SERVER=DEDICATED)(CID=(PROGRAM=C:\oraclexe\app\oracle\product\10.2.0\server\bin\sqlplus.exe)(HOST=WIN7X64)(USER=Gil))) * (ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=54388)) * establish * XE * 12514
TNS-12514: TNS:listener does not currently know of service requested in connect descriptor
25-APR-2010 21:24:43 * service_update * CLRExtProc * 0

Not able to connect remote oracle database over VPN

I can not connect remote oracle database over VPN. tnsping is ok and it shows the server information of remote database. i can also telnet the 1521 port of remote database server. I can connect the same server when it is located in the same LAN. Please help me out this is very urgent.

6b6c669e-6baa-45c4-a6dc-444aef2d5e7a wrote:
I can not connect remote oracle database over VPN. tnsping is ok and it shows the server information of remote database. i can also telnet the 1521 port of remote database server. I can connect the same server when it is located in the same LAN. Please help me out this is very urgent.
First, this is a forum of volunteers. There is no "urgent" here.
"Urgent" means one of two things -
1) people are dying, or
2) you have a customer-facing, revenue-producing production system that is down.
(And to get some perspective on the second case, keep the first in mind.)
For the first, you call whatever civil emergency service seems appropriate.
For the second, you open an SR with Oracle - which requires a paid-up support contract. For *them* to consider your problem "urgent", you will need to demonstrate that your problem falls under item #2. I seriously doubt your problem fits that criteria.
You don't have a support contract? Now you know the exact dollar figure that your company places on the data.
That said, you need to understand a few things about your specific problem,
First, port 1521 is only used by the listener to accept a connection request. Once it gets that request (and finds that it is for a service (sid) that it knows about, it will fork a server process and tell the requesting client that it can communicate with that server process over some other port .. a randomly chosen port number in the "high" range. It could be your vpn is blocking that other port, whereas your internal firewall is not.
But this is just an educated guess since I cannot find "can not connect remote oracle database over VPN" in any error message manual. If you had mentioned the VPN along with an actual oracle error message we could be much more precise in our diagnoses and recommendations.
---- edit 22 Sep
It occurred to me that I just assumed you were using the same client machine in both cases ... a laptop that you use both at work (local network) and home (vpn). If that assumption is false, there are probably problems with your tns setup on the home (vpn) machine.
But again, it would be much easier to help if you gave us an actual error message.

Not able to connect to oracle database 11g from application server10g

Hello,
I have installed oracle database 11g. We are using forms and report services through application server 10g. I have add required entries in tnsnames.ora file. But I am not able to connect to database. I am getting following error:
ORA-12514-TNS:listener does not currently know of service requested in connect descriptor
Please help me.
Thanks
Trusha

lsnrctl status...
oracle@orcl11gd:~> lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 13-FEB-2013 09:16:06
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 11-FEB-2013 12:40:23
Uptime 1 days 20 hr. 35 min. 42 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/product/11gR2/db/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/orcl11gd/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=orcl11gd.irma.ac.in)(PORT=1521)))
Services Summary...
Service "orcl11gd.irma.ac.in" has 1 instance(s).
Instance "orcl11gd", status READY, has 1 handler(s) for this service...
Service "orcl11gdXDB.irma.ac.in" has 1 instance(s).
Instance "orcl11gd", status READY, has 1 handler(s) for this service...
The command completed successfully
oracle@orcl11gd:~>
tnsnames.ora
# tnsnames.ora Network Configuration File: /opt/oracle/OraBi/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
REP_ASDEMO_ORABI.IRMA.AC.IN =
(ADDRESS = (PROTOCOL = tcp)(HOST = asdemo)(PORT = 1950))
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = asdemo.irma.ac.in)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = PLSExtProc)
ORCLDEMO =
     (DESCRIPTION =
          (ADDRESS_LIST =
               (ADDRESS = (PROTOCOL = TCP) (HOST = 172.16.11.80)(PORT = 1521))
          (CONNECT_DATA =
               (SERVICE_NAME = ORCLDEMO)
               (SERVER = DEDICATED)
ORCL11GD =
     (DESCRIPTION =
          (ADDRESS_LIST =
               (ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.100.180)(PORT = 1521))
          (CONNECT_DATA =
               (SERVICE_NAME = ORCL11GD)
               (SERVER = DEDICATED)
     )

Oracle in not responsing to connect requests via sqlplus

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