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<html xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:mshelp="http://msdn.microsoft.com/mshelp" xmlns:ddue="http://ddue.schemas.microsoft.com/authoring/2003/5" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:msxsl="urn:schemas-microsoft-com:xslt"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8" /><META NAME="save" CONTENT="history" /><title>MaxTransactions Property </title><link rel="stylesheet" type="text/css" href="../styles/presentation.css" /><link rel="stylesheet" type="text/css" href="ms-help://Hx/HxRuntime/HxLink.css" /><script type="text/javascript" src="../scripts/EventUtilities.js"> </script><script type="text/javascript" src="../scripts/SplitScreen.js"> </script><script type="text/javascript" src="../scripts/Dropdown.js"> </script><script type="text/javascript" src="../scripts/script_manifold.js"> </script><script type="text/javascript" src="../scripts/script_feedBack.js"> </script><script type="text/javascript" src="../scripts/CheckboxMenu.js"> </script><script type="text/javascript" src="../scripts/CommonUtilities.js"> </script><meta name="container" content="BerkeleyDB" /><meta name="file" content="P_BerkeleyDB_DatabaseEnvironment_MaxTransactions" /><meta name="guid" content="P_BerkeleyDB_DatabaseEnvironment_MaxTransactions" /><xml><MSHelp:Attr Name="AssetID" Value="P:BerkeleyDB.DatabaseEnvironment.MaxTransactions" /><MSHelp:TOCTitle Title="MaxTransactions Property " /><MSHelp:RLTitle Title="DatabaseEnvironment.MaxTransactions Property (BerkeleyDB)" /><MSHelp:Keyword Index="A" Term="P:BerkeleyDB.DatabaseEnvironment.MaxTransactions" /><MSHelp:Keyword Index="A" Term="frlrfBerkeleyDBDatabaseEnvironmentClassMaxTransactionsTopic" /><MSHelp:Keyword Index="K" Term="MaxTransactions property" /><MSHelp:Keyword Index="K" Term="DatabaseEnvironment.MaxTransactions property" /><MSHelp:Keyword Index="F" Term="MaxTransactions" /><MSHelp:Keyword Index="F" Term="DatabaseEnvironment.MaxTransactions" /><MSHelp:Keyword Index="F" Term="BerkeleyDB.DatabaseEnvironment.MaxTransactions" /><MSHelp:Attr Name="APIType" Value="Managed" /><MSHelp:Attr Name="APILocation" Value="libdb_dotnet62.dll" /><MSHelp:Attr Name="APIName" Value="BerkeleyDB.DatabaseEnvironment.MaxTransactions" /><MSHelp:Attr Name="APIName" Value="BerkeleyDB.DatabaseEnvironment.get_MaxTransactions" /><MSHelp:Attr Name="APIName" Value="BerkeleyDB.DatabaseEnvironment.set_MaxTransactions" /><MSHelp:Attr Name="DevLang" Value="CSharp" /><MSHelp:Attr Name="DevLang" Value="VB" /><MSHelp:Attr Name="DevLang" Value="C++" /><MSHelp:Attr Name="Locale" Value="en-us" /><MSHelp:Attr Name="TopicType" Value="kbSyntax" /><MSHelp:Attr Name="TopicType" Value="apiref" /><MSHelp:Attr Name="Abstract" Value="The number of active transactions supported by the environment. This value bounds the size of the memory allocated for transactions. 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</td></tr></table><table id="gradientTable"><tr><td class="nsrBottom" background="../icons/gradient.gif" /></tr></table></div><div id="mainSection"><div id="mainBody"><div id="allHistory" class="saveHistory" onsave="saveAll()" onload="loadAll()" /><span style="color: DarkGray"> </span><div class="summary">
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The number of active transactions supported by the environment. This
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value bounds the size of the memory allocated for transactions.
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Child transactions are counted as active until they either commit or
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abort.
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</div><p />
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<b>Namespace:</b>
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<a href="N_BerkeleyDB.htm">BerkeleyDB</a><br />
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<b>Assembly:</b>
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<span sdata="assembly">libdb_dotnet62</span> (in libdb_dotnet62.dll) Version: 6.2.23.0<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> <a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">uint</a> <span class="identifier">MaxTransactions</span> { <span class="keyword">get</span>; <span class="keyword">set</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">Property</span> <span class="identifier">MaxTransactions</span> <span class="keyword">As</span> <a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">UInteger</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>:
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<span class="keyword">property</span> <a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">unsigned int</a> <span class="identifier">MaxTransactions</span> {
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<a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">unsigned int</a> <span class="keyword">get</span> ();
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<span class="keyword">void</span> <span class="keyword">set</span> (<a href="http://msdn2.microsoft.com/en-us/library/ctys3981" target="_blank">unsigned int</a> <span class="parameter">value</span>);
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}</pre></td></tr></table></span></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="">
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<p>
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Transactions that update multiversion databases are not freed until
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the last page version that the transaction created is flushed from
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cache. This means that applications using multi-version concurrency
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control may need in the extreme case a transaction for each page in cache.
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</p>
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<p>
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When all of the memory available in the database environment for
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transactions is in use, calls to <a href="M_BerkeleyDB_DatabaseEnvironment_BeginTransaction.htm">BeginTransaction<span class="languageSpecificText"><span class="cs">()</span><span class="cpp">()</span><span class="nu">()</span></span></a>
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fail (until some active transactions complete). If MaxTransactions
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is never set, the database environment is configured to support at
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least 100 active transactions.
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</p>
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</div><h1 class="heading"><span onclick="ExpandCollapse(seeAlsoToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(seeAlsoToggle, event)" tabindex="0"><img id="seeAlsoToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />See Also</span></h1><div id="seeAlsoSection" class="section" name="collapseableSection" style=""><div class="seeAlsoStyle"><a href="T_BerkeleyDB_DatabaseEnvironment.htm">DatabaseEnvironment Class</a></div><div class="seeAlsoStyle"><a href="N_BerkeleyDB.htm">BerkeleyDB Namespace</a></div></div></div><div id="footer"><div class="footerLine"><img width="100%" height="3px" src="../icons/footer.gif" title="Footer image" /></div><A NAME="feedback"></A><span id="fb" class="feedbackcss"> </span>
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