Ora 12154 Database Driver Error
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while creating a linked server to Oracle ★★★★★★★★★★★★★★★ SnehadeepJune 30, 201028 Share 0 0 This is one of the most common errors while creating linked server to Oracle database. Today I will discuss the reason for this error and possible resolutions.
Full error message: OLE DB provider "MSDAORA" for linked server "LINKED_ORA" returned message "ORA-12154: TNS:could not resolve the connect identifier specified". Msg 7303, Level 16, State https://network.informatica.com/message/104130?tstart=0 1, Line 1 Cannot initialize the data source object of OLE DB provider "MSDAORA" for linked server "LINKED_ORA". First of all make sure you have reviewed the following Microsoft KB article that has a lot of good information on troubleshooting Oracle linked server issues. How to set up https://blogs.msdn.microsoft.com/dataaccesstechnologies/2010/06/30/ora-12154-tns-could-not-resolve-the-connect-identifier-specified-error-while-creating-a-linked-server-to-oracle/ and troubleshoot a linked server to an Oracle database in SQL Server http://support.microsoft.com/kb/280106 Also make sure you have installed Oracle Client on the SQL server. If the SQL server is 64 bit then we need to install 64 bit Oracle provider. You can also create linked server using Oracle ODBC driver together with Microsoft OLE DB provider for ODBC. Once again on a 64 bit SQL server you need to install the 64-Bit OLEDB Provider for ODBC (MSDASQL) and 64 bit Oracle ODBC drivers. However 64-Bit OLEDB Provider for ODBC (MSDASQL) is already there in Windows Vista/Windows Server 2008 and later OS. This particular error message is a very general error message and can happen for quite a number of reasons. For general understanding of the error, you can review oracle documentation like this http://ora-12154.ora-code.com/ In SQL Server Linked Server, it could indicate a few things (not limited to)–here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring http://stackoverflow.com/questions/206055/oracle-ora-12154-tns-could-not-resolve-service-name-error developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; http://kb.tableau.com/articles/issue/error-ora-12154-connecting-to-oracle-not-using-tnsnames-ora-file it only takes a minute: Sign up Oracle ORA-12154: TNS: Could not resolve service name Error? up vote 11 down vote favorite 5 I am a SQL Server user . I am on a project that is using oracle ora 12154 (which I rarely use) I need to create an ODBC connection so I can access the some data via MS Access I have a application on my machine called oraHome90. It seems to allow a configuration of something called a listener in a “net configuration utility”, I think that a “Local Net Service Name Configuration” needs to also be done. The IT support gave me this information to set up the ODBC connection . I have tried every combination ora 12154 database that I can think of. I can get past a test that successfully passes a test to “login“ to the oracle server database. When I try to create the ODBC connection I get the following error: ORA-12154: TNS: Could not resolve service name. Assuming that I want to start from scratch and the following information is supposed to allow for me to connect to the database….. Any suggestions or comment ? Note: ultimately the project will have a website .ASP page query the data, but I have to first prove that I can see the data using the ODBC connection via MS Access Service name: SERVICENAME HOST = HOST.XYZi.com User Id: MYUSERID Password: MYPASSWORD ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 'Oracle Connection Dim ocst Dim oconn ocst = "Provider=OraOLEDB.Oracle;" & _ "Data Source=DATASOURCE;" & _ "User ID=CHIJXL;" & _ "Password=password;" set oconn = CreateObject("ADODB.Connection") oracle odbc tns share|improve this question edited Oct 15 '08 at 19:26 David Basarab 35.4k38105145 asked Oct 15 '08 at 19:23 Joe 4164811 add a comment| 19 Answers 19 active oldest votes up vote 8 down vote from http://ora-12154.ora-code.com ORA-12154: TNS:could not resolve the connect identifier specified Cause: A connection to a database or other service was requested using a connect identifier, and the connect identifier specified could not be resolved into a connect descriptor using one of the naming methods configured. For example, if the type of connect identifier used was a net service name t
to open a published workbook that is connected to an Oracle database, where all three connection parameters (Server, Service, and Port) were configured during the initial connection, the following error might occur: Oracle database error 12154: ORA-12154: TNS:could not resolve the connect identifier specified When you try to connect to the same Oracle database using the service name from TNSNames.ora file in the Server parameter and leaving the other two parameters blank, the connection is successful. EnvironmentTableau ServerTableau DesktopOracle ResolutionOption 1: Work with your Oracle database administrator to allow the HOSTNAME connection type for the Oracle client on the computer running Tableau Desktop or Tableau Server. Option 2: The following workaround may allow the HOSTNAME connection type: On the computer running Tableau Desktop or Tableau Server, find the sqlnet.ora file. The folder containing the file should be specified in the TNS_ADMIN variable and should also contain the TNSNames.ora file. For more information, see "Set the TNS_Admin environment variable" in Setting an Oracle Connection to Use TNSNames.ora and Sqlnet.ora at Oracle FAQ's. Note: If this folder does not contain a sqlnet.ora file, create a sqlnet.ora file.In the sqlnet.ora file, amend the NAMES.DIRECTORY_PATH line to say the following or add the following line to the sqlnet.ora file: NAMES.DIRECTORY_PATH= (LDAP, TNSNAMES, HOSTNAME) Note: If this issue occurs in a Tableau Server distributed environment, perform the above steps on all computers in the Tableau Server installation. CauseThe sqlnet.ora file is not allowing the Oracle driver to look for the database using all three connection parameters. Did this article resolve the issue? Thank you for providing your feedback on the effectiveness of the article. Click here to return to our Support page. Open new Case Open a new case Continue Searching Click here to go to our Support page. Knowledge Base Get detailed answers and how-to step-by-step instructions for your issues and technical questions. Community Find and share solutions with our active community through forums, user groups and ideas. Product Help Browse a complete list of product manuals and guides. Available online, offline and PDF formats. Training and Tutorials Learn how to master Tableau's products with our on-demand, live or class room training. PRINT THIS PAGE Related Links Oracle Attachments