Connection Issues When Running Multiple Instances Of Same Application

I am running multiple instance of the same application. This application is connecting to the database and running stored procedures using ADODB (all code examples are taken from msado15).

The problem is that somehow these two applications are sharing something either with the connection or commands.

For instance if the two instances are in the following function at the same time then they both thow an SEH exception:




Code Snippet
inline _RecordsetPtr Command15::Execute ( VARIANT * RecordsAffected, VARIANT * Parameters, long Options ) {


struct _Recordset * _result = 0;
HRESULT _hr = raw_Execute(RecordsAffected, Parameters, Options, &_result);
if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));
return _RecordsetPtr(_result, false);
}






The exception that occurs is: "First-chance exception ...: 0xC0000005: Access violation reading location 0x00000068."

And afterwords when they go to release the command an error occurs on
First-chance exception at 0x4de4120c in IpsEngine.exe: 0xC0000005: Access violation reading location 0xcccccccc.



Code Snippet

inline void _bstr_t::Data_t::_Free() throw()
{

if (m_wstr != NULL) {
::SysFreeString(m_wstr);
}
if (m_str != NULL) {

delete [] m_str;
}
}





This is being called from.



Code Snippet

inline void Command15::PutRefActiveConnection ( struct _Connection * ppvObject ) {

HRESULT _hr = putref_ActiveConnection(ppvObject);
if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));
}





The exception that occurs: First-chance exception at ...: 0xC0000005: Access violation reading location 0xcccccccc.

Similarly when one instance releases a command using





Code Snippet
inline void Command15::PutRefActiveConnection ( struct _Connection * ppvObject ) {


HRESULT _hr = putref_ActiveConnection(ppvObject);
if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));
}







The second instance of the application fails when running the command at the exact same time.



Code Snippet

inline _RecordsetPtr Command15::Execute ( VARIANT * RecordsAffected, VARIANT * Parameters, long Options ) {


struct _Recordset * _result = 0;
HRESULT _hr = raw_Execute(RecordsAffected, Parameters, Options, &_result);
if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));
return _RecordsetPtr(_result, false);
}







The command and connections are not static and there should be completely seperate instances of these for each instance of the application. Does anybody know why this may be happening. Any help would be appreciated. Thanks in advance.