使用php连接到oracle数据库时的oci_connect警告

Question

I have 2 days now trying to connect to a remote oracle database installed in a machine running with windows 7.

From PHP server side I installed wampserver and oracle instant client 11.2 and I enabled oci8 php extension, I have also added instant client folder to my path variable. From database side I have added TNS_ADMIN and ORACLE_HOME to path variable.

This is my php script:

    $db= "(DESCRIPTION =
              (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.43)(PORT = 1521))
              (CONNECT_DATA =
              (SERVER = DEDICATED)
                (SERVICE_NAME = hasdrubal)
              )
           )";
    $conn = oci_connect('SYSTEM', 'pass', $db);
    if (!$conn)
    {
       $e = oci_error();
      trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
    }
    else
    {
       die("connected");
    }

I always get error

oci_connect ORA-12541: TNS:no listener

the string is the same in the tsnames.ora and the listener is running. I checked that in services.msc.

Can you help me please?

Answer 1

If you don't want to deal with TNS, then you can use an Easy Connect string as the 3rd parameter for oci_connect() , also mentioned in the oci_connect() documentation :

To use the Easy Connect naming method, PHP must be linked with
Oracle 10g or greater Client libraries.

The Easy Connect string for Oracle 10g is of the form:
[//]host_name[:port][/service_name].

From Oracle 11g, the syntax is:
[//]host_name[:port][/service_name][:server_type][/instance_name]

In your case it would be something like:

//192.168.1.43:1521/hasdrubal