I have a windows forms app, in which I am trying to connect to Oracle 11g DB with OracleManaged driver, which ends with an exception "ORA-12154: TNS:could not resolve the connect identifier specified". However when I am trying to connect through ODP.NET 64bit dlls, it is connecting (for this I ensured building the app in x64). The sample code below. If I toggle to second statement, I am getting the error while opening the connection.
Oracle.DataAccess.Client.OracleConnection con = new Oracle.DataAccess.Client.OracleConnection();
//Oracle.ManagedDataAccess.Client.OracleConnection con = new Oracle.ManagedDataAccess.Client.OracleConnection();
con.ConnectionString = "Data Source=v3;User Id=xxx;Password=xxx;";
con.Open();
MessageBox.Show("Done");
con.Close();
Is there a setting I am missing? Even I tried with the configure.bat that came along with manaed ODP (64bit)
The reason is simple, your managed driver does not know where to find the TNSNAMES.ORA. Oracle says it depends on environment variables.
What we do here is to set TNS_ADMIN environment variable to the folder containing the TNSNAMES and everything works perfectly.
This is the best solution since it allows you not having multiple instances of TNSNAMES.ora on your station...
I got this worked by copying the tnsnames.ora file to bin folder. It seems like the managed driver couldn't find the right tnsname.ora file.
Related
Using crystal reports 2011 I am unable to connect to a remote oracle database.
Getting Error : ORA-12154: TNS:could not resolve the connect identifier specified
Using 32 bit Oracle 11g driver on 64 bit Windows.
The DSN is set up correctly and testing the connection works.
The DSN also works with other tools such as TNSPING and even Eclipse.
Is there any online public Oracle databases that I could try testing my connection via Crystal reports?
Let's say you are trying to connect to a TNS entry called "XYZ".
ORA-12154 is not saying that your tnsnames configuration for XYZ is incorrect - it is saying that we could not even find an entry called XYZ. Which either means
we could not find the tnsnames.ora file,
we were looking at the wrong tnsnames.ora file
If you can set environment variables as part of your Crystal Reports environment, the try set TNS_ADMIN to the location of your tnsnames.ora file
I've:
Windows 7 x64
My 11G Oracle client as per below
C:\Oracle\product\11.2.0\client_1
My SQL Developer (downloaded the kit with JDK 8 included, but installed the JSK separately just in case) dir as per below
C:\sqldeveloper
When I try to connect using TNS I have
no ocijdbc12 in java.library.path
If I go to Settings -> Database -> Advanced and choose my Oracle dir manually I get this:
Testing the Oracle Home located at C:\Oracle\product\11.2.0\client_1
Testing client directory ... OK Testing loading Oracle JDBC driver ...
OK Testing checking Oracle JDBC driver version ... Failed: Minimum
driver version 11.2.0.3 required, specified driver version is
11.2.0.1.0
So I looked into upgrading the JDBC driver, but I can't use the check for updates feature, since it appears to be blocked in my virtual machine.
I got the ojdbc7.jar from the SQL developer directory and copied it to C:\Oracle\product\11.2.0\client_1\jdbc\lib, and now I get the error below:
Testing the Oracle Home located at C:\Oracle\product\11.2.0\client_1
Testing client directory ... OK Testing loading Oracle JDBC driver ...
OK Testing checking Oracle JDBC driver version ... OK Driver
version: 12.1.0.2.0 Testing testing native OCI library load ...
Failed: Error loading the native OCI library The native OCI driver
could not be loaded. The system propertyjava.library.path contains the
entries from the environment variable PATH. Check it to verify that
the expected native library directory
C:\Oracle\product\11.2.0\client_1\bin is present and precedes any
other client installations. java.library.path =
C:\sqldeveloper\jdk\jre\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Oracle\product\10.2.0\client_1\bin;C:\Oracle\product\11.2.0\client_1\bin;C:\Oracle\product\11.2.0\client_2;C:\Oracle\product\11.2.0\client_2\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\ARQDISP\;C:\Program
;.
Have no idea what I'm doing at this point. Could you please help?
Its missing drivers. So in my case I installed Oracle Client from http://www.oracle.com/technetwork/topics/winx64soft-089540.html
and set the path variable accordingly.
Here's a blog post that shows how to tell SQL Developer where and which installed client to use :
https://www.thatjeffsmith.com/archive/2014/01/oracle-sql-developer-4-and-the-oracle-client/
Restart your SQL Developer.
I had similar issue. Moving from sqldeveloper 4.0 to 4.1, imported all my connections, but in 4.1, I would get 'no ocijdbc12 in java.library.path'.
I opened up my current connections (right-click on any connection and choose properties) all of which the connection Type is TNS. The 'Connect Identifier' was checked with the connections network alias name entered there. I checked on the 'Network Alias' check box and selected the same name and then the connection worked.
I went back to 4.0 to examine my connections there and it appears that the alias name works fine with the 'Connect Identifier' selected but not in 4.1
I had to update all my many connections to use 'Network Alias'.
Error loading the native OCI libraryThe native OCI driver could not be loaded and when trying to connect to a database i was getting no ocijdbc12 in java.library.path
For me the error was solved after i have created a new variable ORACLE_HOME with the value ....(path of the folder where the sql developer was insataled)\jdk\jre. Then i have added at the begging of the Path variable %ORACLE_HOME%\bin.
At first i have created a system variable that was pointing to the folder of the installation of the dev express and that was not working
For database selecting the connection properties and changing the connection type from TNS to Basic and providing the other details (Service name/SID) for the connection resolved the issue for me
Maybe it helps having a look into answer of my post about similar topic:
How to get Sqldeveloper 19.1 64-bit working with instantclient_12_2 on Windows enterprise PC without admin privileges?
The mentioned .bat file shows all you need.
If you have admin privileges or permissions to change any environment variables, then it will probably be the better way without using .bat file.
When I try to connect using TNS I have
no ocijdbc12 in java.library.path
It is so stupid and funny, at the same time, what I found.
I get the same error and the only difference between when it is OK and when is not is...
the TNS definition in tnsnames.ora
Simply add (maybe once again if it disappeared) the TNS definition of your database, like:
XE.WORLD=
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST=localhost)
(PORT=1521)
)
(CONNECT_DATA=
(SERVICE_NAME=XE.WORLD)
(SERVER = DEDICATED)
)
)
and restart SQL Developer.
Connection configuration will keep the name (XE.WORLD) even if it is already gone from tnsnames.ora. If it is not there, on the connection attempt, it will return that misleading error.
My setup: SQL Developer 4.1.4.21, ojdbc8.jar, connection to Oracle 19c.
I have a 32 bit .net exe (on a win 7 machine) which runs and writes data to an oracle db. For this application to access the DB I have created a ODBC source (Microsoft ODBC for Oracle) under System DSN of odbcad32.exe from c:\windows\syswow64.
Instead of picking this source the application is picking a default connection source for the user. Please see below. (from sqlnet.ORA)
Fatal NI connect error 12560, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=oracle)(ARGV0=oracleORCL)(ARGS='(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))'))(CONNECT_DATA=(SID=ORCL)(CID=(PROGRAM=D:\Projects\abc\Web\dll\reader.exe)(HOST=abc-43DGMX1)(USER=NGolia))))
The application (exe) is obviously not able to connect to the correct DB and throws a
ERROR SQLConnect() Failed.
Could anyone help let me know what could be missing? Am I missing any environment variables or
Are you able to test the connection in the Oracle ODBC Driver Configuration? If the application is 32bit, you're using the correct odbcad32.exe. I would check your tnsnames.ora in your $ORACLE_HOME and verify the database information looks correct there.
We are switching from the obsolete System.Data.OracleClient. I have switched all the references in the ASP.NET 2.0 code, however when I try to access the database server using ODP.NET calls I get ORA-12154: TNS:could not resolve the connect identifier specified. This works when I use System.Data.OracleClient on the same machine. Any suggestions about what is going wrong here?
You can avoid a dependency on Tnsnames.ora altogether, and go for the "independent" connection string in format:
Data Source =(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=MyHost)(PORT=MyPort)))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=MyOracleSID))); User Id =myUsername; Password =myPassword;
BTW, you can look at connectionstrings.com/oracle for a quick, in-your-face list of supported connection string formats.
It sounds like your client install doesn't have your TNS names setup correctly. If you just installed ODP.NET on this machine, you probably just installed another Oracle client, and have yet to configure it.
Copy the TNSNAMES.ORA from the /NETWORK/ADMIN directory in the Oracle home where the OracleClient was installed and copy over to the new /NETWORK/ADMIN directory where ODP.NET is installed.
http://www.oracle.com/technetwork/topics/dotnet/odt-faq-085407.html#ORA-12154:_TNS:could_not_resolve_the
Christian Shay
Oracle
I am using Oracle data provider for .net to try to connect to the oracle DB, to add a ADO entity data framework model file, but i am getting the error below.
ORA-12154: TNS could not resolve the connect identifier specified
when I try to tnsping the data source name that i provide in the VS dialog i can successfully resolve it to the correct ip and host names. But for some reason the Oracle Data provider doesn't seem to be reading it from from my C:\oracle\product\10.2.0\client_1\NETWORK\ADMIN\tnsnames.ora
any ideas ?
i am using vs 2010 with the 32 bit oracle data provider from http://www.oracle.com/technetwork/topics/dotnet/index-085163.html
i can use the same TNS names on different sql client like sqlDbx it works smoothly on the same machine.
If you set a system environment variable TNS_ADMIN to the location of your tnsnames.ora file, does that help?