mirror of
https://github.com/berkeleydb/libdb.git
synced 2024-11-16 17:16:25 +00:00
309 lines
12 KiB
HTML
309 lines
12 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
||
<html xmlns="http://www.w3.org/1999/xhtml">
|
||
<head>
|
||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
|
||
<title>DB_ENV->dbrename()</title>
|
||
<link rel="stylesheet" href="apiReference.css" type="text/css" />
|
||
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
|
||
<link rel="start" href="index.html" title="Berkeley DB C API Reference" />
|
||
<link rel="up" href="env.html" title="Chapter 5. The DB_ENV Handle" />
|
||
<link rel="prev" href="envdbremove.html" title="DB_ENV->dbremove()" />
|
||
<link rel="next" href="enverr.html" title="DB_ENV->err()" />
|
||
</head>
|
||
<body>
|
||
<div xmlns="" class="navheader">
|
||
<div class="libver">
|
||
<p>Library Version 11.2.5.3</p>
|
||
</div>
|
||
<table width="100%" summary="Navigation header">
|
||
<tr>
|
||
<th colspan="3" align="center">DB_ENV->dbrename()</th>
|
||
</tr>
|
||
<tr>
|
||
<td width="20%" align="left"><a accesskey="p" href="envdbremove.html">Prev</a> </td>
|
||
<th width="60%" align="center">Chapter 5.
|
||
The DB_ENV Handle
|
||
</th>
|
||
<td width="20%" align="right"> <a accesskey="n" href="enverr.html">Next</a></td>
|
||
</tr>
|
||
</table>
|
||
<hr />
|
||
</div>
|
||
<div class="sect1" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h2 class="title" style="clear: both"><a id="envdbrename"></a>DB_ENV->dbrename()</h2>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<pre class="programlisting">#include <db.h>
|
||
|
||
int
|
||
DB_ENV->dbrename(DB_ENV *dbenv, DB_TXN *txnid, const char *file,
|
||
const char *database, const char *newname, u_int32_t flags); </pre>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->dbrename()</code> method renames the database specified by the
|
||
<span class="bold"><strong>file</strong></span> and <span class="bold"><strong>database</strong></span> parameters to <span class="bold"><strong>newname</strong></span>. If no <span class="bold"><strong>database</strong></span> is specified, the underlying file
|
||
represented by <span class="bold"><strong>file</strong></span> is renamed
|
||
using the value supplied to <span class="bold"><strong>newname</strong></span>,
|
||
incidentally renaming all of the databases it contained.
|
||
</p>
|
||
<p>
|
||
Applications should not rename databases that are currently in use.
|
||
If an underlying file is being renamed and logging is currently
|
||
enabled in the database environment, no database in the file may be
|
||
open when the <code class="methodname">DB_ENV->dbrename()</code> method is called.
|
||
</p>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->dbrename()</code> <span>
|
||
<span>
|
||
method returns a non-zero error value on failure and 0 on success.
|
||
</span>
|
||
|
||
</span>
|
||
</p>
|
||
<p>
|
||
<code class="methodname">DB_ENV->dbrename()</code> is affected by any database directory specified using the
|
||
<a class="xref" href="envset_data_dir.html" title="DB_ENV->set_data_dir()">DB_ENV->set_data_dir()</a>
|
||
method, or by setting the <code class="literal">set_data_dir</code> string in the environment's
|
||
<a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file.
|
||
</p>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp59352168"></a>Parameters</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59352360"></a>txnid</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
If the operation is part of an application-specified transaction, the
|
||
<span class="bold"><strong>txnid</strong></span> parameter is a transaction
|
||
handle returned from <a class="xref" href="txnbegin.html" title="DB_ENV->txn_begin()">DB_ENV->txn_begin()</a>; if the
|
||
operation is part of a Berkeley DB Concurrent Data Store group, the
|
||
<span class="bold"><strong>txnid</strong></span> parameter is a handle returned
|
||
from <a class="xref" href="envcdsgroup_begin.html" title="DB_ENV->cdsgroup_begin()">DB_ENV->cdsgroup_begin()</a>;
|
||
otherwise NULL. If no transaction handle is specified, but the
|
||
<code class="literal">DB_AUTO_COMMIT</code> flag is specified to either this method or the
|
||
environment handle, the operation will be implicitly
|
||
transaction protected.
|
||
</p>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59353416"></a>file</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <span class="bold"><strong>file</strong></span> parameter is the physical
|
||
file which contains the database(s) to be renamed.
|
||
</p>
|
||
<p>
|
||
When using a Unicode build on Windows (the default), the
|
||
<span class="bold"><strong>file</strong></span> argument will
|
||
be interpreted as a UTF-8 string, which is equivalent to ASCII for Latin
|
||
characters.
|
||
</p>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59311040"></a>database</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <span class="bold"><strong>database</strong></span> parameter is the
|
||
database to be renamed.
|
||
</p>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59348080"></a>newname</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <span class="bold"><strong>newname</strong></span> parameter is the new name
|
||
of the database or file.
|
||
</p>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59348744"></a>flags</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <span class="bold"><strong>flags</strong></span> parameter
|
||
must be set to 0 or the following value:
|
||
</p>
|
||
<div class="itemizedlist">
|
||
<ul type="disc">
|
||
<li>
|
||
<p>
|
||
<code class="literal">DB_AUTO_COMMIT</code>
|
||
</p>
|
||
<p>
|
||
Enclose the <code class="methodname">DB_ENV->dbrename()</code>
|
||
call within a transaction. If the call
|
||
succeeds, changes made by the operation will be recoverable. If the
|
||
call fails, the operation will have made no changes.
|
||
</p>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp59361216"></a>Environment Variables</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The environment variable <code class="literal">DB_HOME</code> may be used as the path of
|
||
the database environment home.
|
||
</p>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp59337720"></a>Errors</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The <code class="methodname">DB_ENV->dbrename()</code> <span>
|
||
<span>
|
||
method may fail and return one of the following non-zero errors:
|
||
</span>
|
||
|
||
</span>
|
||
</p>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59321072"></a>DB_LOCK_DEADLOCK</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
A transactional database environment operation was selected to resolve
|
||
a deadlock.
|
||
</p>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59365976"></a>DB_LOCK_NOTGRANTED</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
A Berkeley DB Concurrent Data Store database environment configured
|
||
for lock timeouts was unable to grant a lock in the allowed time.
|
||
</p>
|
||
<p>
|
||
You attempted to open a database handle that is configured
|
||
for no waiting exclusive locking, but the exclusive lock could not be
|
||
immediately obtained. See
|
||
<a class="xref" href="dbset_lk_exclusive.html" title="DB->set_lk_exclusive()">DB->set_lk_exclusive()</a>
|
||
for more information.
|
||
</p>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59352720"></a>EINVAL</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
If the method was called before <a class="xref" href="envopen.html" title="DB_ENV->open()">DB_ENV->open()</a>
|
||
was called; or if an invalid flag value or parameter was specified.
|
||
</p>
|
||
</div>
|
||
<div class="sect3" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h4 class="title"><a id="idp59369128"></a>ENOENT</h4>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
The file or directory does not exist.
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp59365544"></a>Class</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>
|
||
</p>
|
||
</div>
|
||
<div class="sect2" lang="en" xml:lang="en">
|
||
<div class="titlepage">
|
||
<div>
|
||
<div>
|
||
<h3 class="title"><a id="idp59365824"></a>See Also</h3>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<p>
|
||
<a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a>
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="navfooter">
|
||
<hr />
|
||
<table width="100%" summary="Navigation footer">
|
||
<tr>
|
||
<td width="40%" align="left"><a accesskey="p" href="envdbremove.html">Prev</a> </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="u" href="env.html">Up</a>
|
||
</td>
|
||
<td width="40%" align="right"> <a accesskey="n" href="enverr.html">Next</a></td>
|
||
</tr>
|
||
<tr>
|
||
<td width="40%" align="left" valign="top">DB_ENV->dbremove() </td>
|
||
<td width="20%" align="center">
|
||
<a accesskey="h" href="index.html">Home</a>
|
||
</td>
|
||
<td width="40%" align="right" valign="top"> DB_ENV->err()</td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
</body>
|
||
</html>
|