private DB2Environment()
{
connectionPools = Hashtable.Synchronized(new Hashtable());
// short sqlRet = DB2CLIWrapper.SQLAllocHandle(DB2Constants.SQL_HANDLE_ENV, IntPtr.Zero, ref penvHandle);
short sqlRet = DB2CLIWrapper.Initialize(ref penvHandle);
DB2ClientUtils.DB2CheckReturn(sqlRet, 0, IntPtr.Zero, "Unable to allocate Environment handle.", null);
// SQLSetEnvAttr( hEnv=0:1, fAttribute=SQL_ATTR_APP_TYPE 2473, vParam=4, cbParam=0 ) // 4=ADO.NET apptype????
// SQLSetEnvAttr( hEnv=0:1, fAttribute=SQL_ATTR_OUTPUT_NTS 10001, vParam=0, cbParam=0 ) // strings not 0-terminated
}