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Resolver I
Resolver I

Oracle COnnection error in PBIRS


Oracle Client - 64  Bit is installed on PBIRS. Able to run SQLPLUS from command line and tnsping also works. However creating a data connection fails with the error


GUI Error

The report server couldn't connect to the data source using the information you entered. Make sure you've entered the connection string and any credentials correctly.

Hide error details 

ORA-12154: TNS:could not resolve the connect identifier specified




Stack Trace from the log :


processing!ReportServer_0-4!cf30!10/09/2017-10:37:17:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: , Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: Cannot create a connection to data source ''. ---> Oracle.ManagedDataAccess.Client.OracleException: ORA-12154: TNS:could not resolve the connect identifier specified ---> OracleInternal.Network.NetworkException: ORA-12154: TNS:could not resolve the connect identifier specified
at OracleInternal.Network.AddressResolution..ctor(String TNSAlias, String instanceName)
at OracleInternal.Network.OracleCommunication.DoConnect(String tnsDescriptor)
at OracleInternal.ServiceObjects.OracleConnectionImpl.Connect(ConnectionString cs, Boolean bOpenEndUserSession, String instanceName)
--- End of inner exception stack trace ---
at OracleInternal.ConnectionPool.PoolManager`3.Get(ConnectionString csWithDiffOrNewPwd, Boolean bGetForApp, String affinityInstanceName, Boolean bForceMatch)
at OracleInternal.ConnectionPool.OraclePoolManager.Get(ConnectionString csWithNewPassword, Boolean bGetForApp, String affinityInstanceName, Boolean bForceMatch)
at OracleInternal.ConnectionPool.OracleConnectionDispenser`3.Get(ConnectionString cs, PM conPM, ConnectionString pmCS, SecureString securedPassword, SecureString securedProxyPassword)
at Oracle.ManagedDataAccess.Client.OracleConnection.Open()
at Microsoft.ReportingServices.Diagnostics.DataExtensionConnectionBase.<>c__DisplayClass5.<OpenConnection>b__4()
--- End of inner exception stack trace ---;

Advocate I
Advocate I

It's Solved same Issue for me.


This issue we can't fix in Power BI Server, we need to fix this in Power BI Desktop itself, because we can't change the datasource in Power BI server once we published from Power BI Desktop, in power bi server only user name and password we can give  and datasorce connection string we can't change in it.


So while creating your Power BI report in Power BI desktop, kindly provide your connection sting like this  "HOST: PORT/SERVICE_NAME"(Don't give any space) instead of your oracle TNS Service Name.


It's Worked for me, i think so it will be helpfull for you guys also.





I have used the connection string as HOST: PORT/SERVICE_NAME; but i am still getting TNS error. Can someone please help @kskarthick 

Advocate I
Advocate I

Dear All,


Same issue i got, anyone got solution kindly let me know.

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