We are currently experiencing issues trying to connect to Oracle stored procedures from Microsoft SQL Server Reporting Services 2014, receiving the following error anytime we try and run any stored procedure via a report connecting to an Oracle stored procedure:
ORA-06550: line 1, column 7: PLS-00306: wrong number or types of arguments in call to '<<procedure name here>>' ORA-06550: line 1, column 7: PL/SQL: Statement ignored
These stored procedures return an “OUT” SYS_REFCURSOR parameter as required to return a data set to SSRS, and it seems to be that parameter that is causing the issue for all our reports.
We are running SSRS on a Windows Server 2012 R2 Standard OS, 64 bit, and SSRS is running under a 64 bit configuration. We have installed the ODAC 64 bit components (64-bit ODAC 12.2c Release 1 (12.2.0.1.1) for Windows x64) for Windows (downloaded from
https://www.oracle.com/technetwork/database/windows/downloads/index-090165.html) and also registered the ODP.NET DLLs on the server into the GAC as our reports use this connection method.
From SSRS on the server, we can successfully make a connection to the Oracle datasource using the SSRS Report Manager. And from our development machines, where we installed the 32 bit ODAC / ODT Tools for Visual Studio (ODAC 12.2c Release 1 and Oracle
Developer Tools for Visual Studio (12.2.0.1.1)) (because Visual Studio uses the 32-bit ODAC components), we can successfully connect to the Oracle database and execute the reports without the error we are receiving on the server.
We have already validated that we have the correct parameters in the report, and we have validated that we can connect and execute the stored procedures successfully via SQL Plus and also on our local development machines from the SSRS report.
We are trying to connect to an Oracle 11.2.0.4 database.
We have already tried following the advice and procedures from a number of articles, including those listed in other posts on this site such as "https://social.technet.microsoft.com/Forums/en-US/424f750e-7f58-49e3-bd4a-51e0acdd99a4/not-able-to-use-oracle-sp-in-ssrsgetting-an-error?forum=sqlreportingservices"
and "https://social.technet.microsoft.com/Forums/en-US/626c9c6c-1c99-4718-9cb1-054a102701cd/ssrs-calling-a-stored-procedure-error-pls00306-wrong-number-or-types-of-arg?forum=sqlreportingservices&ppud=4". But as far as we can tell, the ODAC
version we have installed on the server (12.2c Release 1) can connect to an Oracle database version 10g or higher (according to https://www.oracle.com/technetwork/topics/dotnet/install122010-3711118.html), and our database is 11.2.0.4 so we should be good,
correct? Or is the Oracle documentation wrong, and in order to connect to an Oracle 11.x database we need the ODAC 11.2.0.3.0 components on the server (even though the ODAC 12.2c components installed on our development machines allow us to run the reports
successfully from Visual Studio)?
Anyone have any thoughts?
Thanks in advance.