How To Set ODBC Connection Properties

In this example, the packet size is changed to 2MB by passing "packetSize=2097152" as part of the connection string.

The following on-premiseexample shows how to set ODBC connection properties:

SQLHENV henv;
SQLHDBC hdbc;
SQLRETURN rc;
SQLCHAR outString[1024];
SQLSMALLINT outLength;
rc = SQLAllocHandle( SQL_HANDLE_ENV, SQL_NULL_HANDLE, &henv );
rc = SQLSetEnvAttr( henv, SQL_ATTR_ODBC_VERSION, (void*)SQL_OV_ODBC3, 0);
rc = SQLAllocHandle( SQL_HANDLE_DBC, henv, &hdbc );
rc = SQLDriverConnect( hdbc, henv,
   (SQLCHAR *)"driver={HDBODBC};UID={myUser};PWD={myPassword};serverNode=myServer:30015;packetSize=2097152",
   SQL_NTS, outString, sizeof(outString), &outLength, 
SQL_DRIVER_NOPROMPT);