ODBC Bug with LONG VARCHAR??

Question

Hi,
I'm running Oracle 8i Personal Edition 8.1.5 on WinNT SP5 and I'm am having some problems using ODBC 8.1.5.4. Running the program below, which tries to insert a string of length 4000 into a LONG VARCHAR is ok. Trying to insert a string of length 5000 fails. If I modify the prepared statement so the key value is hardcoded the call succeeds, no matter what the string length!.
Any ideas??
rgds
Jeppe
Code sample:
#include <windows.h>
#include <sql.h>
#include <sqlext.h>
#include <iostream>
// Type the following in sqlplus:
// create table testtable (stringval long varchar, key integer);
// insert into testtable values('',42);
const int colsize = 4000; // Change this to e.g. 5000 and the update fails!
const char dsn[] = "becora8";
const char user[] = "becdb";
const char passwd[] = "becdb";
int main(int argc, char* argv[])
SQLHANDLE env,con,stmt;
SQLRETURN res;
char str[8000];
res = SQLAllocHandle(SQL_HANDLE_ENV, 0, &env);
res = SQLSetEnvAttr(env, SQL_ATTR_ODBC_VERSION,(SQLPOINTER)SQL_OV_ODBC3,SQL_IS_INTEGER);
res = SQLAllocHandle(SQL_HANDLE_DBC, env, &con);
res = SQLConnect(con, (SQLCHAR*)dsn, SQL_NTS, (SQLCHAR*)user, SQL_NTS, (SQLCHAR*)passwd, SQL_NTS);
res = SQLAllocHandle(SQL_HANDLE_STMT, con, &stmt);
// Replace the WHERE parameter with key=42 and the update suceeds no matter what size is used
res = SQLPrepare(stmt, (SQLCHAR*)"UPDATE testtable SET stringval=? WHERE key=?", SQL_NTS);
memset(str, 0, sizeof(str));
memset(str, 'A', colsize);
long l = 42;
res = SQLBindParameter(stmt, 1, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, colsize, 0, (PTR)str, colsize, 0);
res = SQLBindParameter(stmt, 2, SQL_PARAM_INPUT, SQL_C_LONG, SQL_INTEGER, sizeof(long), 0, (PTR)&l, sizeof(long), 0);
res = SQLExecute(stmt);
std::cout << "Updating " << colsize << " bytes, result: " << (res >= 0 ? "ok" : "failed") << "\n";
return 0;
null

Answer 1

I just tried it on my setup and it worked fine. Sorry no help here.