1<?xml version="1.0" encoding="UTF-8" standalone="no"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 3<html xmlns="http://www.w3.org/1999/xhtml"> 4 <head> 5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 6 <title>Release 4.3: Logging</title> 7 <link rel="stylesheet" href="gettingStarted.css" type="text/css" /> 8 <meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /> 9 <link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" /> 10 <link rel="up" href="upgrade_4_3_toc.html" title="Chapter��40.��Upgrading Berkeley DB 4.2 applications to Berkeley DB 4.3" /> 11 <link rel="prev" href="upgrade_4_3_verb.html" title="Release 4.3: DB_ENV->set_verbose" /> 12 <link rel="next" href="upgrade_4_3_fileopen.html" title="Release 4.3: DB_FILEOPEN" /> 13 </head> 14 <body> 15 <div class="navheader"> 16 <table width="100%" summary="Navigation header"> 17 <tr> 18 <th colspan="3" align="center">Release 4.3: Logging</th> 19 </tr> 20 <tr> 21 <td width="20%" align="left"><a accesskey="p" href="upgrade_4_3_verb.html">Prev</a>��</td> 22 <th width="60%" align="center">Chapter��40.��Upgrading Berkeley DB 4.2 applications to Berkeley DB 4.3</th> 23 <td width="20%" align="right">��<a accesskey="n" href="upgrade_4_3_fileopen.html">Next</a></td> 24 </tr> 25 </table> 26 <hr /> 27 </div> 28 <div class="sect1" lang="en" xml:lang="en"> 29 <div class="titlepage"> 30 <div> 31 <div> 32 <h2 class="title" style="clear: both"><a id="upgrade_4_3_log"></a>Release 4.3: Logging</h2> 33 </div> 34 </div> 35 </div> 36 <p>In previous releases, the <a href="../api_reference/C/envset_flags.html" class="olink">DB_ENV->set_flags()</a> method flag 37DB_TXN_NOT_DURABLE specified that transactions for the entire database 38environment were not durable. However, it was not possible to set this 39flag in environments that were part of replication groups, and physical 40log files were still created. The 4.3 release adds support for true 41in-memory logging for both replication and non-replicated sites.</p> 42 <p>Existing applications setting the DB_TXN_NOT_DURABLE flag for database 43environments should be upgraded to set the DB_LOG_INMEMORY flag instead.</p> 44 <p>In previous releases, log buffer sizes were restricted to be less than 45or equal to the log file size; this restriction is no longer required.</p> 46 </div> 47 <div class="navfooter"> 48 <hr /> 49 <table width="100%" summary="Navigation footer"> 50 <tr> 51 <td width="40%" align="left"><a accesskey="p" href="upgrade_4_3_verb.html">Prev</a>��</td> 52 <td width="20%" align="center"> 53 <a accesskey="u" href="upgrade_4_3_toc.html">Up</a> 54 </td> 55 <td width="40%" align="right">��<a accesskey="n" href="upgrade_4_3_fileopen.html">Next</a></td> 56 </tr> 57 <tr> 58 <td width="40%" align="left" valign="top">Release 4.3: DB_ENV->set_verbose��</td> 59 <td width="20%" align="center"> 60 <a accesskey="h" href="index.html">Home</a> 61 </td> 62 <td width="40%" align="right" valign="top">��Release 4.3: DB_FILEOPEN</td> 63 </tr> 64 </table> 65 </div> 66 </body> 67</html> 68