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<h1 class="refname">PDO_OCI DSN</h1>
<p class="verinfo">(PECL PDO_OCI >= 0.1.0)</p><p class="refpurpose"><span class="refname">PDO_OCI DSN</span> — <span class="dc-title">Connecting to Oracle databases</span></p>
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<div class="refsect1 description" id="refsect1-ref.pdo-oci.connection-description">
<h3 class="title">Description</h3>
<p class="para">
The PDO_OCI Data Source Name (DSN) is composed of the following elements:
<dl>
<dt>
<span class="term">DSN prefix</span>
<dd>
<p class="para">
The DSN prefix is <strong class="userinput"><code>oci:</code></strong>.
</p>
</dd>
</dt>
<dt>
<span class="term"><em>dbname</em> (Oracle Instant Client)</span>
<dd>
<p class="para">
The URI for the Oracle Instant Client connection takes the form of
<code class="code">dbname=//<var class="varname"><var class="varname">hostname</var></var>:<var class="varname"><var class="varname">port-number</var></var>/<var class="varname"><var class="varname">database</var></var></code>.
If you are connecting to a database defined in
<var class="filename">tnsnames.ora</var>, use only the name of the database:
<code class="code">dbname=<var class="varname"><var class="varname">database</var></var></code>.
</p>
</dd>
</dt>
<dt>
<span class="term"><em>charset</em></span>
<dd>
<p class="para">
The client-side character set for the current environment handle.
</p>
</dd>
</dt>
</dl>
</p>
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<div class="refsect1 examples" id="refsect1-ref.pdo-oci.connection-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-981">
<p><strong>Example #1 PDO_OCI DSN examples</strong></p>
<div class="example-contents"><p>
The following examples show a PDO_OCI DSN for connecting to
Oracle databases:
<div class="example-contents"><div class="cdata"><pre>
// Connect to a database defined in tnsnames.ora
oci:dbname=mydb
// Connect using the Oracle Instant Client
oci:dbname=//localhost:1521/mydb
</pre></div>
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