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<h2 class="title" style="clear: both"><a id="envset_create_dir"></a>DbEnv::set_create_dir()</h2>
</div>
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<pre class="programlisting">#include <db_cxx.h>
int
DbEnv::set_create_dir(const char *dir); </pre>
<p>
Sets the path of a directory to be used as the location to create the access
method database files. When the
<a class="xref" href="dbopen.html" title="Db::open()">Db::open()</a> function is used to
create a file it will be created relative to this path.
</p>
<p>
If no database directories are specified, database files will be created
either by absolute paths or relative to the environment home
directory. See
<a href="../../programmer_reference/env_naming.html" class="olink">Berkeley DB File Naming</a>
for more information.
</p>
<p>
The database environment's create directory may also be configured
using the environment's <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file. The
syntax of the entry in that file is a single line with the string
"set_create_dir", one or more whitespace characters, and the directory
name.
</p>
<p>
The <code class="methodname">DbEnv::set_create_dir()</code> method configures operations performed
using the specified <a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>
handle, not all operations performed on the underlying database environment.
</p>
<p>
The <code class="methodname">DbEnv::set_create_dir()</code> method may be called at any time.
</p>
<p>
The <code class="methodname">DbEnv::set_create_dir()</code> <span>
<span>
method either returns a non-zero error value or throws an
exception that encapsulates a non-zero error value on
failure, and returns 0 on success.
</span>
</span>
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp7230808"></a>Parameters</h3>
</div>
</div>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="idp7231424"></a>dir</h4>
</div>
</div>
</div>
<p>
The <span class="bold"><strong>dir</strong></span> parameter is a directory to
be used to create database files.
This directory must be one of the directories specified via a call to
<a class="xref" href="envadd_data_dir.html" title="DbEnv::add_data_dir()">DbEnv::add_data_dir()</a>
</p>
<p>
When using a Unicode build on Windows (the default), this argument will be interpreted
as a UTF-8 string, which is equivalent to ASCII for Latin characters.
</p>
</div>
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<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
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<h3 class="title"><a id="idp7210064"></a>Errors</h3>
</div>
</div>
</div>
<p>
The <code class="methodname">DbEnv::set_create_dir()</code> <span>
<span>
method may fail and throw a <a class="link" href="dbexception.html" title="Chapter 6. The DbException Class">DbException</a>
exception, encapsulating one of the following non-zero errors, or 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="idp7239736"></a>EINVAL</h4>
</div>
</div>
</div>
<p>
If the method was called after <a class="xref" href="envopen.html" title="DbEnv::open()">DbEnv::open()</a>
was called; or if an invalid flag value or parameter was specified.
</p>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
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<div>
<h3 class="title"><a id="idp7241064"></a>Class</h3>
</div>
</div>
</div>
<p>
<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>
</p>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp7224896"></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>
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