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Allow database files to be moved from one transactional database
environment to another.
</div><p />
<b>Namespace:</b>
<a href="N_BerkeleyDB.htm">BerkeleyDB</a><br />
<b>Assembly:</b>
<span sdata="assembly">libdb_dotnet53</span> (in libdb_dotnet53.dll) Version: 5.3.28.0<h1 class="heading"><span onclick="ExpandCollapse(syntaxToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(syntaxToggle, event)" tabindex="0"><img id="syntaxToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Syntax</span></h1><div id="syntaxSection" class="section" name="collapseableSection" style=""><div id="syntaxCodeBlocks" class="code"><span codeLanguage="CSharp"><table><tr><th>C#</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">public</span> <span class="keyword">void</span> <span class="identifier">ResetLSN</span>(
<a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">string</a> <span class="parameter">file</span>,
<a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">bool</a> <span class="parameter">encrypted</span>
)</pre></td></tr></table></span><span codeLanguage="VisualBasicDeclaration"><table><tr><th>Visual Basic (Declaration)</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">Public</span> <span class="keyword">Sub</span> <span class="identifier">ResetLSN</span> ( _
<span class="parameter">file</span> <span class="keyword">As</span> <a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">String</a>, _
<span class="parameter">encrypted</span> <span class="keyword">As</span> <a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">Boolean</a> _
)</pre></td></tr></table></span><span codeLanguage="ManagedCPlusPlus"><table><tr><th>Visual C++</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">public</span>:
<span class="keyword">void</span> <span class="identifier">ResetLSN</span>(
<a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">String</a>^ <span class="parameter">file</span>,
<a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">bool</a> <span class="parameter">encrypted</span>
)</pre></td></tr></table></span></div><div id="parameters"><h4 class="subHeading">Parameters</h4><dl paramName="file"><dt><span class="parameter">file</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">System<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span></span>String</a><br />
</dd></dl><dl paramName="encrypted"><dt><span class="parameter">encrypted</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">System<span class="languageSpecificText"><span class="cs">.</span><span class="vb">.</span><span class="cpp">::</span><span class="nu">.</span></span>Boolean</a><br />
</dd></dl></div></div><h1 class="heading"><span onclick="ExpandCollapse(remarksToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(remarksToggle, event)" tabindex="0"><img id="remarksToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Remarks</span></h1><div id="remarksSection" class="section" name="collapseableSection" style="">
<p>
Database pages in transactional database environments contain
references to the environment's log files (that is, log sequence
numbers, or <a href="T_BerkeleyDB_LSN.htm">LSN</a>s). Copying or moving a database file
from one database environment to another, and then modifying it, can
result in data corruption if the LSNs are not first cleared.
</p>
<p>
Note that LSNs should be reset before moving or copying the database
file into a new database environment, rather than moving or copying
the database file and then resetting the LSNs. Berkeley DB has
consistency checks that may be triggered if an application calls
ResetLSN on a database in a new environment when the database LSNs
still reflect the old environment.
</p>
<p>
The ResetLSN method modifies the physical file, in-place.
Applications should not reset LSNs in files that are currently in
use.
</p>
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