OCI-22065: number to text translation for the given format causes overflow
 *Cause:  Rounding done due to the given string format causes overflow.
 *Action: Change the format such that overflow does not occur.

if (var->type == &vt_NumberAsString || var->type == &vt_LongInteger) {
        stringLength = sizeof(stringValue);
        status = OCINumberToText(var->environment->errorHandle,
                &var->data[pos],
                (text*) var->environment->numberToStringFormatBuffer.ptr,
                var->environment->numberToStringFormatBuffer.size, NULL, 0,
                &stringLength, (unsigned char*) stringValue);
        if (Environment_CheckForError(var->environment, status,
                "NumberVar_GetValue(): as string") < 0)
            return NULL;
        stringObj = cxString_FromEncodedString(stringValue, stringLength,
                var->environment->encoding);
        if (!stringObj)
            return NULL;
        if (var->type == &vt_NumberAsString)
            return stringObj;

return OracleNumberToPythonFloat(var->environment, &var->data[pos]);

//-----------------------------------------------------------------------------
// OracleNumberToPythonFloat()
//   Return a Python date object given an Oracle date.
//-----------------------------------------------------------------------------
static PyObject *OracleNumberToPythonFloat(
    udt_Environment *environment,       // environment
    OCINumber* value)                   // value to convert
{
    double doubleValue;
    sword status;

    status = OCINumberToReal(environment->errorHandle,
            value, sizeof(double), (dvoid*) &doubleValue);
    if (Environment_CheckForError(environment, status,
            "OracleNumberToPythonFloat()") < 0)
        return NULL;
    return PyFloat_FromDouble(doubleValue);
}