A few months ago Oracle queries stopped working on our reporting services server after a service pack on the reporting server. I ended up having to grant permissions on Oracle directories to eliminate the first error and then renamed the NLS_LANG registry entry (effectively deleting it) to get rid of the second error. The old value was: AMERICAN_AMERICA.WE8MSWIN1252
Now we are moving some new reports into production which use Oracle stored procedures and they are getting this error.
--- End of inner exception stack trace ---
w3wp!processing!8!7/27/2009-09:26:09:: e ERROR: An exception has occurred in data source 'CSUD3_RPTAPL'. Details: Microsoft.ReportingServices.ReportProcessing.ReportProcessingException: Query execution failed for data set 'MYDATASET'. ---> System.Data.OracleClient.OracleException: ORA-06550: line 1, column 57:
PLS-00553: character set name is not recognized
ORA-06550: line 0, column 0:
PL/SQL: Compilation unit analysis terminated
I’ve created a test procedure that simply returns
select 'test' "field1" from dual;
It gets the same error. Tonight I will try setting NLS_LANG back to it’s old value and see if that fixes the procedures – although it will break the regular oracle reports. If anyone has a clue what is going on, please enlighten me.
From what I’ve read, the client should be using the database default if the charset is not specified on the client.
The key was the first error message:
ORA-12705: Cannot access NLS data files or invalid environment specified.
Which led to this:
http://www.dba-oracle.com/t_ora_12705_error.htm
And then a closer examination of the folder permissions. I needed to grant perms to authenticated users on the ORACLE_HOME directory and subdirs.
Working now!