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<h2 class="title" style="clear: both"><a id="envset_blob_dir"></a>DB_ENV->set_blob_dir()</h2>
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<pre class="programlisting">#include <db.h>
int
DB_ENV->set_blob_dir(DB_ENV *dbenv, const char *dir); </pre>
<p>
The <code class="methodname">DB_ENV->set_blob_dir()</code> method sets the
directory where BLOB data is stored. Use this method when the
database is opened within an encompassing environment. If an
environment is not in use, use <a class="xref" href="set_blob_dir.html" title="DB->set_blob_dir()">DB->set_blob_dir()</a> instead.
</p>
<p>
By default, if this method is not called then BLOB data is placed
in a subdirectory within the DB's environment.
</p>
<p>
Once this method has been used, you can call <a class="xref" href="envget_blob_dir.html" title="DB_ENV->get_blob_dir()">DB_ENV->get_blob_dir()</a> to
identify the current storage location used for BLOB data.
</p>
<p>
This method configures operations performed using the specified
<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a> handle, not all operations
performed on the underlying database environment.
</p>
<p>
This method may not be called after <a class="xref" href="envopen.html" title="DB_ENV->open()">DB_ENV->open()</a> is called.
</p>
<p>
Unless otherwise specified, the
<code class="methodname">DB_ENV->set_blob_dir()</code> <span>
<span>
method returns a non-zero error value on failure and 0 on success.
</span>
</span>
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
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<h3 class="title"><a id="idp4889464"></a>Parameters</h3>
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<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="idp4868432"></a>dir</h4>
</div>
</div>
</div>
<p>
Provides the name of the directory where BLOB data is to
be stored. If an absolute path is not provided, then the
directory identified here is relative to the environment's
home directory.
</p>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
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<h3 class="title"><a id="idp4890544"></a>Errors</h3>
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<p>
The <code class="methodname">DB_ENV->set_blob_dir()</code> <span>
<span>
method may fail and return one of the following non-zero errors:
</span>
</span>
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<div class="sect3" lang="en" xml:lang="en">
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<h4 class="title"><a id="idp4867416"></a>EINVAL</h4>
</div>
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<p>
If the method was called after <a class="xref" href="dbopen.html" title="DB->open()">DB->open()</a> was called; or if
an invalid parameter was specified.
</p>
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<h3 class="title"><a id="idp4896824"></a>Class</h3>
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<p>
<a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a>
</p>
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<h3 class="title"><a id="idp4898368"></a>See Also</h3>
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<a class="xref" href="blob.html#bloblist" title="BLOBs and Related Methods">BLOBs and Related Methods</a>
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