在同一个应用程序中将codeigniter连接到mysql和oracle

Question

我正在使用Mysql和Oracle作为我的CI应用程序.我试图连接它,但我发现我无法查询Oracle数据库.它总是给出表不存在的错误.

我已经将database.php设置为这样的东西

$active_group = 'oracle';
$active_record = true;

$db['oracle']['hostname'] = '10.10.10.1:1521/ocidb';
$db['oracle']['username'] = 'ociuser';
$db['oracle']['password'] = 'ocipass';
$db['oracle']['database'] = 'ocidb';
$db['oracle']['dbdriver'] = 'oci8';
$db['oracle']['dbprefix'] = '';
$db['oracle']['pconnect'] = TRUE;
$db['oracle']['db_debug'] = FALSE;
$db['oracle']['cache_on'] = FALSE;
$db['oracle']['cachedir'] = '';
$db['oracle']['char_set'] = 'utf8';
$db['oracle']['dbcollat'] = 'utf8_general_ci';
$db['oracle']['swap_pre'] = '';
$db['oracle']['autoinit'] = TRUE;
$db['oracle']['stricton'] = FALSE;

$active_group = 'default';
$active_record = TRUE;

$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'root';
$db['default']['password'] = '';
$db['default']['database'] = 'mysqldb';
$db['default']['dbdriver'] = 'mysql';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;

在一个控制器中,我想在oracle中查询一个表,所以我在那里加载它.

function citizen(){
  $this->load->database('oracle',true);

  $data['someone'] = $this->people_model->getPeople();
  
  $this->load->view('myview',$data);
}

这里是people_model

function getPeople(){
  return $this->db->get('people')->result();
}

当我运行它时,它会出错

Error Number: 1146

Table 'mysqldb.people' doesn't exist

SELECT * FROM (`people`) WHERE `id` = '21111'

它似乎仍然使查询进入mysql,而表人们在oracle中.我也尝试在模型中而不是在控制器中加载oracle数据库但结果相同.

在这种情况下,如何查询oracle.任何答案将不胜感激.谢谢.

Answer 1

我使用Codeigniter使用oracle和mysql.

您使用$this->load->database('oracle',true);此项应该被分配给变量,因为您使用了第二个参数true.像这样

$oracle_db=$this->load->database('oracle',true);//connected with oracle
$mysql_db=$this->load->database('default',true);//connected with mysql

现在,您可以将这两个变量用于查询.就像

$oracle_db->get('people')->result();

要么

$mysql_db->get('people')->result();

所以最后你的模型应该是这样的(不要在你的控制器上加载数据库)

function __construct()//model construct function
{
    parent::__construct();
    $this->oracle_db=$this->load->database('oracle',true);
    $this->mysql_db=$this->load->database('default',true);
}
function getPeople(){
   return $this->oracle_db->get('people')->result();
}

希望你能理解.确保它与您的oracle db连接.

我的oracle数据库.php是这样的

$tns = "
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = YOUR_IP)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SID = YOUR_SID)
    )
  )
       ";
$db['oracle']['hostname'] = $tns;