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POPHP to Oracle using oci8/MDB2 - _doConnect: unable to establish a connection
 

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  1. POPHP to Oracle using oci8/MDB2 - _doConnect: unable to establish a connection
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    <p>I'm running a Linux Fedora 19 setup with Oracle 11g, PHP 5.5.4, Apache 2.4.6, and PEAR 1.9.4. In addition to this, I have the OCI8 plug-in for PHP downloaded and enabled, and have downloaded MDB2 and the MDB2_Driver_oci8.</p> <p>The goal is to connect my webpage to the Oracle 11g database. This already works in an existing setup (which I didn't do), and I'm trying to replicate it in a new setup.</p> <p>For some reason, in the new server, it doesn't work. It generates an error:</p> <blockquote> <p>_doConnect: [Error message: unable to establish a connection] ** oci8 (oci8)://gbsihr:xxx@localhost:1521/</p> <p>An error occurred while trying to connect to the database server. Error message: MDB2 Error: connect failed</p> </blockquote> <p>I truly have no idea what this means. This is my PHP connect function:</p> <pre><code>&lt;?php include_once('includes/configure.inc'); require_once 'MDB2.php'; function DB_connect($intSilent = -1){ $db_dsn = $_SESSION['DB_Type'] ."://"; $db_dsn .= $_SESSION['DB_Username'] .":"; $db_dsn .= $_SESSION['DB_UserPassword'] ."@"; $db_dsn .= $_SESSION['DB_Host'] .":"; $db_dsn .= $_SESSION['DBPort'] ."/?service="; $db_dsn .= $_SESSION['DB_DbName']; if (PEAR::isError($dbconnect)) { print '&lt;pre&gt;';var_dump($intSilent);print '&lt;/pre&gt;'; print '&lt;pre&gt;';var_dump($db_dsn);print '&lt;/pre&gt;'; print '&lt;pre&gt;';print $dbconnect-&gt;getDebugInfo();print '&lt;/pre&gt;'; echo "An error occurred while trying to connect to the database server.&lt;br&gt;\n"; echo "Error message: " . $dbconnect-&gt;getMessage() . "&lt;br&gt;\n"; echo "A more detailed error description: " . $dbconnect-&gt;getDebugInfo() . "&lt;br&gt;\n"; exit(); // Check whether the object is a connection or if($_SESSION["gENDebugInfo"] == "On"){ $_SESSION["gErrorNote"] = $dbconnect-&gt;getDebugInfo(); } if ($intSilent &lt; 0) { header("Location:" . $_SESSION["gENWebRoot"] . "showerror.php?ec=1003"); // Failed to connect exit(); } }else{ $dbconnect-&gt;setOption('portability', MDB2_PORTABILITY_ALL); } return $dbconnect; } ?&gt; </code></pre> <p>And this is the contents of configure.inc:</p> <pre><code>$_SESSION["gENWebRoot"] = '/hrweb/'; $_SESSION['DB_Type'] = 'oci8'; $_SESSION['DB_Host'] = 'localhost'; $_SESSION['DB_Username'] = 'gbsihr'; $_SESSION['DB_UserPassword'] = 'ids21'; $_SESSION["DBPort"] = '1521'; $_SESSION['DB_DbName'] = 'xe'; </code></pre> <p>As this works on another setup, I'm not sure where the error lies. OCI8 seems to be in order, though I did go through hoops to get it working.</p> <p>I did do some research, with only two vague results - one pointing to the oci8.php itself, and the other, an Oracle TNS error (unlikely, given the lack of errors).</p> <p>Here are my attempts to solve the problem:</p> <p>I tried copying the Basic Query Example from <a href="http://php.net/manual/en/oci8.examples.php" rel="nofollow noreferrer">this website</a>. I modified the "hr" and "welcome", and ran it on my new setup (it works fine on the older one). And this is the result:</p> <blockquote> <p>oci_connect(): OCIEnvNlsCreate() failed. There is something wrong with your system - please check that ORACLE_HOME and LD_LIBRARY_PATH are set and point to the right directories. Error while trying to retrieve text for error ORA01804</p> </blockquote> <p>I've also tried opening the httpd file in /etc/sysconfig/ and adding the following line to it:</p> <blockquote> <p>LD_LIBRARY_PATH="/u01/apps/oracle/product/11.2.0/xe/lib<br> export LD_LIBRARY_PATH</p> </blockquote> <p>And yet when I try to echo $LD_LIBRARY_PATH in the CLI, it won't return anything. It does appear in phpinfo(), though: <img src="https://i.stack.imgur.com/zHbIR.png" alt="enter image description here"><br> This is in contrast to $ORACLE_HOME, which I have to load manually every start-up by typing in <code>. /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh</code> in the CLI, and does not appear under environments, but at least, can be echo'd. <img src="https://i.stack.imgur.com/2ZiKn.png" alt="enter image description here"></p> <p>There are a lot of variables in the old setup under environment; LD_LIBRARY_PATH, ORACLE_HOME, and ORACLE_SID being the most noteworthy. I only see LD_LIBRARY_PATH in the envvars file, though. Should I add them as well to the httpd file?</p> <p>I'm not much of a Linux-person, sorry. Any help on this would be much appreciated.</p>
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    1. COBesides oci8 functions you could also try PDO.
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      1. USDanFromGermany
 

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