连接oracle数据库问题

naihetian

$db['oci8']['dbdriver'] = "oci8";
$db['oci8']['hostname'] = "192.168.1.102";
$db['oci8']['port'] = "1524";
$db['oci8']['username'] = "aaaa";
$db['oci8']['password'] = "aaaa";
$db['oci8']['database'] = "dddd";
$db['oci8']['char_set'] = "gbk";
$db['oci8']['db_debug'] = FALSE;
$db['oci8']['cache_on'] = FALSE;$db['oci8']['dbdriver'] = "oci8";
$db['oci8']['hostname'] = "192.168.1.102";
$db['oci8']['port'] = "1524";
$db['oci8']['username'] = "aaaa";
$db['oci8']['password'] = "aaaa";
$db['oci8']['database'] = "dddd";
$db['oci8']['char_set'] = "gbk";
$db['oci8']['db_debug'] = FALSE;
$db['oci8']['cache_on'] = FALSE;
这样配置是否正确？要连接oracle数据库还需要做些什么？