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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<refentry xml:id="function.oci-commit" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>oci_commit</refname>
<refpurpose>Commits the outstanding database transaction</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>oci_commit</methodname>
<methodparam><type>resource</type><parameter>connection</parameter></methodparam>
</methodsynopsis>
<para>
Commits the outstanding transaction for the
Oracle <parameter>connection</parameter>. A commit ends the
current transaction and makes permanent all changes. It releases
all locks held.
</para>
<para>
A transaction begins when the first SQL statement that changes data
is executed with <function>oci_execute</function> using
the <constant>OCI_NO_AUTO_COMMIT</constant> flag. Further data
changes made by other statements become part of the same
transaction. Data changes made in a transaction are temporary
until the transaction is committed or rolled back. Other users of
the database will not see the changes until they are committed.
</para>
<para>
When inserting or updating data, using transactions is recommended
for relational data consistency and for performance reasons.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>connection</parameter></term>
<listitem>
<para>
An Oracle connection identifier, returned by
<function>oci_connect</function>, <function>oci_pconnect</function>, or <function>oci_new_connect</function>.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>oci_commit</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// Insert into several tables, rolling back the changes if an error occurs
$conn = oci_connect('hr', 'welcome', 'localhost/XE');
$stid = oci_parse($conn, "INSERT INTO mysalary (id, name) VALUES (1, 'Chris')");
// The OCI_NO_AUTO_COMMIT flag tells Oracle not to commit the INSERT immediately
// Use OCI_DEFAULT as the flag for PHP <= 5.3.1. The two flags are equivalent
$r = oci_execute($stid, OCI_NO_AUTO_COMMIT);
if (!$r) {
$e = oci_error($stid);
trigger_error(htmlentities($e['message']), E_USER_ERROR);
}
$stid = oci_parse($conn, 'INSERT INTO myschedule (startday) VALUES (12)');
$r = oci_execute($stid, OCI_NO_AUTO_COMMIT);
if (!$r) {
$e = oci_error($stid);
oci_rollback($conn); // rollback changes to both tables
trigger_error(htmlentities($e['message']), E_USER_ERROR);
}
// Commit the changes to both tables
$r = oci_commit($conn);
if (!r) {
$e = oci_error($conn);
trigger_error(htmlentities($e['message']), E_USER_ERROR);
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<para>
Transactions are automatically rolled back when you close the
connection, or when the script ends, whichever is soonest. You
need to explicitly call <function>oci_commit</function> to commit
the transaction.
</para>
<para>
Any call to <function>oci_execute</function> that uses
<constant>OCI_COMMIT_ON_SUCCESS</constant> mode explicitly or by
default will commit any previous uncommitted transaction.
</para>
<para>
Any Oracle DDL statement such as <literal>CREATE</literal>
or <literal>DROP</literal> will automatically commit any
uncommitted transaction.
</para>
</note>
<note>
<para>
In PHP versions before 5.0.0 you must
use <function>ocicommit</function>
instead. &oci.name.compat.note;
</para>
</note>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>oci_execute</function></member>
<member><function>oci_rollback</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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