MDAC 2.5 SDK - ODBC Driver for Oracle
When running Oracle stored procedures that utilize 10 or more output parameters, the stored procedure call will fail, resulting in an Access Violation or ActiveX Data Objects (ADO) error. This can occur when using the Microsoft ODBC Driver for Oracle with versions 8.0.4.0.0 and 8.0.4.0.4 of the Oracle client software.
To correct the problem, the Oracle client software must be upgraded to version 8.0.4.2.0 or higher. Contact Oracle Corporation for more information about the patches.
Note This problem does not occur with the early release of Oracle client software version 8.0.3.0.0.