In a Debian machine, I can use tnsping to identify a tnsname.
But I can not found any tnsnames.ora in this machine. (nothing in $ORACLE_HOME/network/admin/ )
So, how can I find the tns name config file used by tnsping command ?
Is there any command (similar with tnsping) to locate the tnsnames file?
UPDATE: tnsping command result:
Thanks in advance
There is no common location and different applications/drivers apply various search paths with different order and precedences.
Check following locations:
$ORACLE_HOME/network/admin/
Current directory of application
$TNS_ADMIN (where TNS_ADMIN is environment variable settings)
Just for completeness in case of Windows check also
Registry key HKLM\SOFTWARE\ORACLE\KEY_{ORACLE_HOME_NAME}\TNS_ADMIN (for 64 bit)
Registry key HKLM\SOFTWARE\Wow6432Node\ORACLE\KEY_{ORACLE_HOME_NAME}\TNS_ADMIN (for 32 bit)
.NET config file (i.e. machine.config and/or web.config)
In ideal case all of them should point to the same location, consider to create symbolic links if needed.
NB, maybe file tnsnames.ora simply does not exist. Create such file in location mentioned above.
You tell us the tnsping is working... At my place the tnsping tool gives the exact location of the sqlnet.ora it is using.... The tnsnames.ora should be in the same directory.
When your environment is correctly configured the tnsnames should be in the mentioned directory. When it does not exist you could try running the netca command and configure "Naming Methods configuration" and add a destination with "Locale Net Service Name configuration". This utility will create sqlnet.ora en tnsnames.ora in the default location.
[oracle#somedir]$ tnsping test
TNS Ping Utility for Linux: Version 11.2.0.3.0 - Production on 27-JUL-2016 22:00:24
Copyright (c) 1997, 2011, Oracle. All rights reserved.
Used parameter files:
/home/oracle/app/oracle/product/11.2.3/dbhome_1/network/admin/sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = TEST)))
OK (0 msec)
I just created a new database connection from Oracle SQL Developer called BATCHINSERT. But when I try to tnsping it I get the following error.
TNS Ping Utility for 64-bit Windows: Version 11.2.0.2.0 - Production on 27-APR-2016 15:28:37
Copyright (c) 1997, 2014, Oracle. All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\sqlnet.ora
TNS-03505: Failed to resolve name
This is my sqlnet.ora
# sqlnet.ora network configuration file in
# /opt/oracle/product/11.2.0/network/admin
NAMES.DIRECTORY_PATH=(TNSNAMES)
NAMES.DEFAULT_DOMAIN=WORLD
SQLNET.AUTHENTICATION_SERVICES = (NTS)
And this is my tnsnames.ora
BatchInsert=
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = XE)
))
How to write the entry for it so I can run it from .bat file?
Your sqlnet.ora sets a default domain name of WORLD, so your tnsnames entry needs to have that too:
BatchInsert.WORLD=
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = XE)
))
You should then be able to tnsping and connect using either batchinsert or batchinsert.world.
Alternatively you can remove the NAMES.DEFAULT_DOMAIN=WORLD line from your sqlnet.ora, but you may have other things already that expect that to be set.
This has nothing to do with SQL Developer unless you want to use that TNS alias in a connection definition, rather than using a Basic connection. If you already have a TNS entry for XE you can just use that, without defining a new entry pointing to the same service/SID.
SQL Developer doesn't by default read SQLNet.ORA
Easy fix, in Preferences, point to the directory for your TNSNames files.
If you enable THICK Driver connections and have your $ORACLE_HOME os var set, then SQLDev should see and use your SQLNet.ORA file for connectivity stuff.
I would like to export database schema with expdp/impdp. For that reason I am trying to do the same steps like in this tutorial.
when I enter sqlplus / as sysdba in the command line, I will be ased to enter user name and pasword. When I do this and click Enter, the following errors is comming:
ORA-12560: TNS: Error protocol Adapter
I am using windows 7 and have installed oracle 12c. All oracle services are started. I login from cmd.exe as adminstrator
I think I know the problem. You said that you did the same steps in the tutorial.
In the tutorial, he did this step C:>set oracle_sid=db.
Did you have the same name of the Oracle SID ? If you did a default installation, by the default the Oracle SID is orcl .
In your case, do this C:>set oracle_sid=ORCL. To verify the Oracle SID, go to this path C:\oracle\app\oracle\product\11.2.0\server\network\ADMIN and open the listener.ora and check the host name.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST =ORCL)(PORT = 1521)
)
)
)
If you have HOST=ORCL, then you must do this C:>set oracle_sid=ORCL. If you have another name, do this C:>set oracle_sid=NAME_OF_YOUR_HOST
TNS adpater is because you are creating a local uses under orcl, please create a user under pdborcl, this will solve your connectivity problem.
We have an application running locally where we're experiencing the following error:
ORA-12514: TNS:listener does not currently know of service requested
in connect descriptor
I've tested the connection using TNSPing which resolved correctly and
I tried SQLPlus to try connecting, which failed with the same error as above. I used this syntax for SQLPlus:
sqlplus username/password#addressname[or host name]
We have verified that:
the TNS Listener on the server is running.
Oracle itself on the server is running.
We don't know of any changes that were made to this environment.
Anything else we can test?
I had this issue and the fix was to make sure in tnsnames.ora the SERVICE_NAME is a valid service name in your database. To find out valid service names, you can use the following query in oracle:
select value from v$parameter where name='service_names'
Once I updated tnsnames.ora to:
TEST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = *<validhost>*)(PORT = *<validport>*))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = *<servicenamefromDB>*)
)
)
then I ran:
sqlplus user#TEST
Success!
The listener is basically telling you that whatever service_name you are using isn't a valid service according to the DB.
(*I was running sqlplus from Win7 client workstation to remote DB and blame the DBAs ;) *)
I know this is an old question, but still unanswered. It took me a day of research, but I found the simplest solution, at least in my case (Oracle 11.2 on Windows 2008 R2) and wanted to share.
The error, if looked at directly, indicates that the listener does not recognize the service name. But where does it keep service names? In %ORACLE_HOME%\NETWORK\ADMIN\listener.ora
The "SID_LIST" is just that, a list of SIDs and service names paired up in a format you can copy or lookup.
I added the problem Service Name, then in Windows "Services" control panel, I did a "Restart" on the Oracle listener service. Now all is well.
For example, your listener.ora file might initially look like:
# listener.ora Network Configuration File: C:\app\oracle_user\product\12.1.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\app\oracle_user\product\12.1.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\app\oracle_user\product\12.1.0\dbhome_1\bin\oraclr12.dll")
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
)
... And to make it recognize a service name of orcl, you might change it to:
# listener.ora Network Configuration File: C:\app\oracle_user\product\12.1.0\dbhome_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\app\oracle_user\product\12.1.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\app\oracle_user\product\12.1.0\dbhome_1\bin\oraclr12.dll")
)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = C:\app\oracle_user\product\12.1.0\dbhome_1)
(SID_NAME = orcl)
)
)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
)
In my circumstances the error was due to the fact the listener did not have the db's service registered. I solved this by registering the services. Example:
My descriptor in tnsnames.ora:
LOCALDB =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = LOCALDB)
)
)
So, I proceed to register the service in the listener.ora manually:
SID_LIST_LISTENER =
(SID_DESC =
(GLOBAL_DBNAME = LOCALDB)
(ORACLE_HOME = C:\Oracle\product\11.2.0\dbhome_1)
(SID_NAME = LOCALDB)
)
Finally, restart the listener by command:
> lsnrctl stop
> lsnrctl start
Done!
I had this issue at Windows server 2008 R2 and Oracle 11g
go to Net Manager > Listener > select database services form the combox > "Global Database Name" must be same as "SID" and "Oracle Home Directory" must be correct.
If you don't have any entry for database services, create one and set correct global database , sid and oracle home.
This really should be a comment to [Brad Rippe][1]'s answer, but alas, not enough rep. That answer got me 90% of the way there. In my case, the installation and configuration of the databases put entries in the tnsnames.ora file for the databases I was running. First, I was able to connect to the database by setting the environment variables (Windows):
set ORACLE_SID=mydatabase
set ORACLE_HOME=C:\Oracle\product\11.2.0\dbhome_1
and then connecting using
sqlplus / as sysdba
Next, running the command from Brad Rippe's answer:
select value from v$parameter where name='service_names';
showed that the names didn't match exactly. The entries as created using Oracle's Database Configuration Assistant were originally:
MYDATABASE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = mylaptop.mydomain.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = mydatabase.mydomain.com)
)
)
The service name from the query was just mydatabase rather than mydatabase.mydomain.com. I edited the tnsnames.ora file to just the base name without the domain portion so they looked like this:
MYDATABASE =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = mylaptop.mydomain.com)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = mydatabase)
)
)
I restarted the TNS Listener service (I often use lsnrctl stop and lsnrctl start from an administrator command window [or Windows Powershell] instead of the Services control panel, but both work.) After that, I was able to connect.
[1]: https://stackoverflow.com/users/979521/brad-rippe
Starting the OracleServiceXXX from the services.msc worked for me in Windows.
For thoses Who are using spring-boot and jdbc for connection.
You have to be careful while writing jdbcUrl in application.properties
With SID in Database connection -
source.datasource.jdbcUrl = jdbc:oracle:thin:#[HOST][:PORT]:SID
With Service name in db connection
globe.datasource.jdbcUrl = jdbc:oracle:thin:#//[HOST][:PORT]/SERVICE
This worked for me :)
For Dbeaver users: try selecting "SID" instead of "Service name" in connection settings.
I had the same problem. For me, just writing
sqlplus myusername/mypassword#localhost
did the trick, doing so makes it connect to the default service name, I guess.
This error can occur when an application makes a new connection for every database interaction or the connections are not closed properly. One of the free tools to monitor and confirm this is Oracle Sql developer (although this is not the only tool you can use to monitor DB sessions).
you can download the tool from oracle site Sql Developer
here is a screenshot of how to monitor you sessions. (if you see many sessions piling up for your application user during when you see the ORA-12514 error then it's a good indication that you may have connection pool problem).
Check to see the database is up. Log onto the server, set the ORACLE_SID environment variable to your database SID, and run SQL*Plus as a local connection.
I resolved this issue in my linux enviroment updating the IP of my machine in /etc/hosts file.
You can verify your network IP (inet end.) with:
$ifconfig
See if your IP matches with /etc/hosts file:
$cat /etc/hosts
Edit your /etc/hosts file, if nedded:
$sudo gedit /etc/hosts
Bye.
what worked for me was really simple, I just needed to initiate the service manually in the "Windows Services" (services.msc in cmd trompt).
my service name is: OracleServiceXXXXX.
I had also faced the same problem and spent 3 days to dig it out.
This happens because of your wrong TNS service entry.
First check whether you are able to connect to standby database from primary database using sql > sqlplus sys#orastand as sysdba (orastand is a standby database).
If you are not able to connect then it is a problem with the service. Correct the entry of service name in TNS file at primary end.
Check standby database the same way. Make the changes here too if required.
Make sure the log_archive_dest_2 parameter has the correct service name.
For those that may be running Oracle in a VM (like me) I saw this issue because my VM was running out of memory, which seems to have prevented OracleDB from starting up/running correctly. Increasing my VM memory and restarting fixed the issue.
Lots of answers here, but here comes a working example with code that you can copy and paste and test immediately:
For me the error 12514 was solved after specifying the correct SERVICE_NAME.
You find that on the server in the file tnsnames.ora which comes with 3 predefined service names (one of them is "XE").
I installed the Oracle Express database OracleXE112 which already comes with some preinstalled demo tables.
When you start the installer you are asked for a password. I entered "xxx" as password. (not used in production)
My server runs on the machine 192.168.1.158
On the server you must explicitely allow access for the process TNSLSNR.exe in the Windows Firewall. This process listens on port 1521.
OPTION A: For C# (.NET2 or .NET4) you can download ODAC11, from which you have to add Oracle.DataAccess.dll to your project. Additionally this DLL depends on: OraOps11w.dll, oci.dll, oraociei11.dll (130MB!), msvcr80.dll.
These DLLs must be in the same directory as the EXE or you must specify the DLL path in: HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\ODP.NET\4.112.4.0\DllPath. On 64 bit machines write additionally to HKLM\SOFTWARE\Wow6432Node\Oracle\...
OPTION B: If you have downloaded ODAC12 you need Oracle.DataAccess.dll, OraOps12w.dll, oci.dll, oraociei12.dll (160MB!), oraons.dll, msvcr100.dll. The Registry path is HKEY_LOCAL_MACHINE\SOFTWARE\Oracle\ODP.NET\4.121.2.0\DllPath
OPTION C: If you don't want huge DLL's of more than 100 MB you should download ODP.NET_Managed12.x.x.x.xxxxx.zip in which you find Oracle.ManagedDataAccess.dll which is only 4 MB and is a pure managed DLL which works in 32 bit and 64 bit processes as well and depends on no other DLL and does not require any registry entries.
The following C# code works for me without any configuration on the server side (just the default installation):
using Oracle.DataAccess.Client;
or
using Oracle.ManagedDataAccess.Client;
....
string oradb = "Data Source=(DESCRIPTION="
+ "(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.158)(PORT=1521)))"
+ "(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=XE)));"
+ "User Id=SYSTEM;Password=xxx;";
using (OracleConnection conn = new OracleConnection(oradb))
{
conn.Open();
using (OracleCommand cmd = new OracleCommand())
{
cmd.Connection = conn;
cmd.CommandText = "select TABLESPACE_NAME from DBA_DATA_FILES";
using (OracleDataReader dr = cmd.ExecuteReader())
{
while (dr.Read())
{
listBox.Items.Add(dr["TABLESPACE_NAME"]);
}
}
}
}
If the SERVICE_NAME=XE is wrong you get error 12514. The SERVICE_NAME is optional. You can also leave it away.
In my case the database had ran out of disk space. Which caused it to not respond. Once I cleared up that issue everything worked again.
I got the same error because the remote SID specified was wrong:
> sqlplus $DATASOURCE_USERNAME/$DATASOURCE_PASSWORD#$DB_SERVER_URL/$REMOTE_SID
I queried the system database:
select * from global_name;
and found my remote SID ("XE").
Then I could connect without any problem.
In my case, round brackets around the SERVICE_NAME was missing in the tnsnames.ora file.
<DBNAME> =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL=TCP)(HOST = nupark-cnvr-ora )(PORT=1521))
)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = <DBNAME> ***CLOSING ROUND BRACKET WAS MISSING HERE***
)
)
LISTENER_<DBNAME> =
(ADDRESS = (PROTOCOL = TCP)(HOST = nupark-cnvr-ora)(PORT = 1521))
I had just to replace my connection string
from:
jdbc:oracle:thin:#localhost:1521:xe
To:
jdbc:oracle:thin:#localhost:1521:orcl
For me this was caused by using a dynamic ipadress using installation. I reinstalled Oracle using a static ipadress and then everything was fine
Restarting the VM worked for me
My issue was resolved by replacing the'SID' in URL with 'service name' and correct host.
tnslsnr is up but database is down.
For oracle novice it is not obvious that database may be down while connections are accepted.
I had to start up database manually like that
su - oracle
export ORACLE_SID=XE
sqlplus sys as sysdba
And then in sql console
startup
In my case i failed to startup but got another error message and found the source of a problem - i had to change host name and then database auto startup was functional again.
I have implemented below workaround to resolve this issue.
I have set the ORACLE_HOME using command prompt
(right click cmd.exe and Run as System administrator).
Used below command
set oracle_home="path to the oracle home"
Go to All programs --> Oracle -ora home1 --> Configuration migration tools --> Net Manager --> Listener
Select Database Services from dropdown.
Both Global database name and SID are set to the same (ORCL in my case).
Set Oracle Home Directory.
Oracle Net Manager window example from oracle documentation:
Click on File and save network configuration.
The problem was that my connection string url contained database name instead of SID.
Replacing database name with oracle database connection SID solved this problem.
To know your oracle SID's you can browse tnsnames.ora file.
XE was the actual SID, so this is how my tomcat connection string looks like now:
<Resource
name="jdbc/my_db_conn"
auth="Container"
type="javax.sql.DataSource"
driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:#//127.0.0.1:1521/XE"
username="test_user"
password="test" />
My server version was "Oracle 11.2 Express", but solution should work on other versions too.
I had a case that I used DBMS where I had to fulfill a db connection form.
I put SID into the Database field and in the dropdown, next to the field, I had had 'Service Name' value instead of 'SID' value.
(normally I don't use Oracle database so I've not been aware of the difference)
That was the reason I got the error message.
The problem can be in the incorrect URL.
For example, I'm using Oracle database (inside VM) with Spring framework and having this issue.
I had in my application.properties file:
spring.datasource.url=jdbc:oracle:thin:#//localhost:1521/orcl12c
But the db version was defferent:
spring.datasource.url=jdbc:oracle:thin:#//localhost:1521/orclcdb
The correct URL can be found in the tnsnames.ora file (this file would be available where the Oracle server, so if you using VM, you should look for this file inside your host VM).
For example for Oracle in the VirtualBox the command to see this file is:
nano /u01/app/oracle/product/version/db_1/network/admin/tnsnames.ora
In my case for Linux environment, the oracle file at ORACLE_HOME/bin was highlighted in "Red" color with different permissions as below:
I changed the permissions of this file as below:
1) Stop Oracle -> sudo systemctl stop oracle.service
2) Change the permission of oracle file at ORACLE_HOME/bin directory as "sudo chmod 777 oracle"
3) Start Oracle -> sudo systemctl start oracle.service
Then after this change, I checked the status of listener using lsnrctl status.Here, I can see the db instances loaded successfully.
However, I can connect using sqldeveloper only, with sqlplus command line I'm getting ORA-12547: TNS Lost Contact error. So, this can a quick workaround to use sqldeveloper.
Note: Take a backup of oracle file before changing the permissions.
I am trying to connect to oracle 11g installed on Linux EL 5 and and getting the following error
SQL> connect sys/password#ud06 as sysdba
ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor
my listener.ora under network/admin is as follows
LISTENER=
(DESCRIPTION=
(ADDRESS_LIST=
(ADDRESS=(PROTOCOL=tcp)(HOST=ud06)(PORT=1521))
(ADDRESS=(PROTOCOL=ipc)(KEY=extproc))))
SID_LIST_LISTENER=
(SID_LIST=
(SID_DESC=
(GLOBAL_DBNAME=orcl)
(ORACLE_HOME=/home/oracle/app/oracle/product/11g)
(SID_NAME=orcl))
(SID_DESC=
(SID_NAME=plsextproc)
(ORACLE_HOME=/home/oracle/app/oracle/product/11g)
(PROGRAM=extproc)))
MY tnsnames.ora is as follows
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost.localdomain)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
)
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
)
)
UD06=
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = ud06)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orcl)
)
)
MY lsnrctl status shows as follows:
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ud06.us.server.com)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 17-FEB-2010 16:23:06
Uptime 0 days 0 hr. 12 min. 33 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /home/oracle/app/oracle/product/11g/network/admin/listener.ora
Listener Log File /home/oracle/app/oracle/product/11g/log/diag/tnslsnr/ud06/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ud06.us.server.com)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=extproc)))
Services Summary...
Service "orcl" has 1 instance(s).
Instance "orcl", status UNKNOWN, has 1 handler(s) for this service...
Service "plsextproc" has 1 instance(s).
Instance "plsextproc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
The answer to this problem is very simple. Do not worry about the .ora files or any other configuration. Oracle does all these just perfect.
Only while connecting via command line, it gets confused with passwords that have a # symbol in them.
Therefore while connecting through command line SQL, do not use a password with a '#' in it. Just use the web interface to create an account having a password without an '#' symbol in it.
That is!! Problem solved. I had been breaking my head for quite a few days, and now my problem is solved!!
Can you ping ud06 successfully (as ud06, not ud06.us.server.com)?
What does the command
lsnrctl services
show?
EDIT:
It sounds to me like maybe the database instance name isn't actually "orcl"? What the lsnrctl services output tells me is that the "orcl" service, although defined in the listener.ora file, is not actually running.
Can you log on with a direct connection on the server? If so, what do you use as the ORACLE_SID environment variable value? Log in as the SYS user and issue the command:
ALTER SYSTEM REGISTER;
Then issue the lsnrctl services command again and see if an additional instance doesn't show up.
Also, as Alex points out, the tnsping command is reporting a fully qualified service name. Edit the sqlnet.ora file and set the NAMES.DEFAULT_DOMAIN value to NULL if it has a value.
EDIT 2: Does tnsping ud06 on the server work? Or is my assumption that client and server are on different systems wrong?
The SERVICE_NAME in the tnsping output doesn't match the entry in tnsnames.ora; is that file from the Windows box or the Linux box? It looks like you don't have a local (Windows) tnsnames.ora entry for u06 and it's guessing what the service name should be expanding it - I think that's what the reference to the hostname adapter means.
I also run into ORA-12154: TNS:could not resolve the connect identifier specified, and adding the user trying to connect to the oinstall group of oracle fixed it.
first try whether the oracle instance is started :
for windows:
start->configuration panel-> administration touls->Services->ORACLESERVICEORCL(my instance by the way)->start
Provide the connection string like this:
ServerName:port/ServiceName;User Name;Password
I was also facing the same error, try this code:
SQL> conn hr/hr #pdborcl;
and if you find same error, it means that you have a different pluggable database name.
Check the pluggable database name by just writing the following command in sqlplus
sql> SELECT name, con_id FROM v$pdbs;
I fixed this problem using this steps.
First of all, this error occured , if you didn't install same directory or drive.
But the answer is here.
Login windows as a Adminstrator.
Go to Control Panel.
System Properties and click Enviroment
Find the OS variable and change name as a "TNS_ADMIN"
And change the value as a "tnsnames's directory address"
Restart the system.
Congrulations.