TNS connection in Oracle SQL Developer

We have been using TNS connections in SQL Developer. Today we moved a database to a new server but still used the same TNS alias in tnsname.ora file for the database. However, the tns connections in SQL Developer shows this alias still points to the old database host server, therefore unable to connect. There is only one tnsnames.ora file on my PC and I have TNS_ADMIN set up to point to it. But it seems to me SQL Developer does not read this altered alias, but used some kind of "cached" alias which points to the old host. If I add a new alias in tnsnames.ora file, it reads correctly. But it does not refresh an existing alias.
So how is this "Network Alias" dropdown list populated? Even after I delete tnsnames.ora file, the drop down list still not changed. How do I reinitialize this list?

Hi,
You should try and search SQLDeveloper help for TNS, that would give you some clues.
The list for selecting a network alias is initially filled from the tnsnames.ora file on your system, if that file exists.
Connections are stored in IDEConnections.xml.
Regards
Peter

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Able to connect via Oracle SQL Developer, but not sql plus

Using Oracle 10.2.0.
I can connect using the TNS connection type in SQL Developer, but cannot do so in SQL PLUS. SQL Plus gives me the error -- could not resolve the connect identifier.
When I do tnsping USPO_ADHOC, I get:
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I actually did not have that environmental variable, so I added it, but nothing changed.
I would note that if I do tnsping foo, I get: failed to resolve name.
If I do tnsping USPO_ADHOC, I get: illegal address parameter.
In both cases, the output correctly identified the path to my sqlnet.ora file, which is in the same directory as my tnsnames.
So I would conclude from that, that the system was already able to find my tnsnames file.
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Hai all,
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am not able to connect to oracle sql developer first time in my windows server.
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am first time working in windows env..
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{color:#0000ff}hi,
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{color}{color:#ff0000}*manik*{color}

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Copyright (c) 1982, 2008, Oracle. All rights reserved.
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933663 wrote:
Hi,
tnsnames.ora
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Alias LISTENER
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Thanks!you listener port on 1522 , but on your tnsnames.ora on 1521
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PS:Please dont forget to change thread status to answered if it possible when u belive your thread has been answered, it pretend to lose time of other forums user while they are searching open question which is not answered,thanks for understanding

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(CONNECT_DATA =
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I can connect to the Oracle database using SQL Plus. Now when i TNSPING ORACLE from command line i get the following message :
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Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST =localhost
*)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = ORACLE)))*
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Oracle SQL Developer - TNS

Hi.
Before installing Oracle 11g, Microsoft Loopback adapter installed. During the installation I did not have any errors, but I can not connect to database XE
tnsnames.ora:
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(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.101)(PORT = 1521))
(CONNECT_DATA =
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(CONNECT_DATA =
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(PRESENTATION = RO)
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(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.101)(PORT = 1521))
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C:\Users\ola>tnsping XE
TNS Ping Utility for 32-bit Windows: Version 11.2.0.1.0 - Production on 30-JAN-2
013 13:56:49
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\app\ola\product\11.2.0\dbhome_1\NETWORK\ADMIN\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.
0.101)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = xe)))
TNS-12535: TNS:operation timed out
C:\Users\ola>
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\ola>lsntcrl status
'lsntcrl' is not recognized as an internal or external command,
operable program or batch file.
C:\Users\ola>lsntcrl service
'lsntcrl' is not recognized as an internal or external command,
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C:\Users\ola>sqlplus scott/tiger@xe
SQL*Plus: Release 11.2.0.1.0 Production on Wed Jan 30 14:01:39 2013
Copyright (c) 1982, 2010, Oracle. All rights reserved.
ERROR:
ORA-12170: TNS:Connect timeout occurred
Enter user-name: sys as sysdba
Enter password:
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
I added variables (Eviromment Variables ) -> System Variables:
TNS_ADMIN
C:\app\ola\product\11.2.0\dbhome_1\NETWORK\ADMIN
SHOW PARAMETER os_authent_prefix
NAME___________TYPE_VALUE
os_authent_prefix string ops$
Edited by: user13387916 on 2013-01-30 14:17

TNS connection in Oracle SQL Developer

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