Receiving Ora-28500 Error 'Invalid Cursor State' When Querying Sql*Server 2005 Tables Using Dg4odbc And FreeTDS ODBC Driver (Doc ID 744636.1)

Last updated on JANUARY 19, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.2.0.1 [Release 11.1 to 11.2]
Information in this document applies to any platform.
Checked for relevance on 21-Sep-2012.

Symptoms

Using DG4ODBC 11.1.0.6 on Linux x86-64 RHEL5 with FreeTDS 0.82  driver and UnixODBC driver manager to select from Microsoft  SQL*Server 2005 gives the following error on a select using SQLPLUS - 

SQL> select * from table_name@dg4odbc;
select * from table_name@dg4odbc
*
ERROR at line 1:
ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[FreeTDS][SQL Server]Invalid cursor state
ORA-02063: preceding 2 lines from DG4ODBC


With the same setup a select from Microsoft SQL*Server 2005 using SQLPLUS works successfully and using ISQL to select from SQL*Server 2005 also works successfully.

Cause

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