Commented by: Jojakim Stahl (jstahl)

The problem was, that the data_at_exec flag for the parameter was set only when first executed/prepared. I fixed this in the following way:

--- e:\http://OdbcFb.org/OdbcStatement.cpp 2012-03-01 11:33:55.000000000 +0100
+++ ./OdbcStatement.cpp 2012-05-24 14:14:04.793788400 +0200
@@ -2730,10 +2730,8 @@
if(parameterNeedData == 0)
{
if ( !implementationParamDescriptor->isDefined() )
- {
implementationParamDescriptor->setDefined(true);
- rebindParam( true );
- }
+ rebindParam( true );

		if \( listBindIn\-\>GetCount\(\) < nInputParam \)
		\{

Commented by: @alexpotapchenko

Fixed in CVS