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Diffstat (limited to 'docs/api_reference/C/envlog_get_config.html')
| -rw-r--r-- | docs/api_reference/C/envlog_get_config.html | 119 |
1 files changed, 73 insertions, 46 deletions
diff --git a/docs/api_reference/C/envlog_get_config.html b/docs/api_reference/C/envlog_get_config.html index 74d440b4..2268e847 100644 --- a/docs/api_reference/C/envlog_get_config.html +++ b/docs/api_reference/C/envlog_get_config.html @@ -14,7 +14,7 @@ <body> <div xmlns="" class="navheader"> <div class="libver"> - <p>Library Version 11.2.5.3</p> + <p>Library Version 12.1.6.1</p> </div> <table width="100%" summary="Navigation header"> <tr> @@ -65,7 +65,7 @@ DB_ENV->log_get_config(DB_ENV *dbenv, u_int32_t which, int *onoffp); </pre> <div class="titlepage"> <div> <div> - <h3 class="title"><a id="idp60850016"></a>Parameters</h3> + <h3 class="title"><a id="idp2529736"></a>Parameters</h3> </div> </div> </div> @@ -73,61 +73,86 @@ DB_ENV->log_get_config(DB_ENV *dbenv, u_int32_t which, int *onoffp); </pre> <div class="titlepage"> <div> <div> - <h4 class="title"><a id="idp60838392"></a>which</h4> + <h4 class="title"><a id="idp2507392"></a>which</h4> </div> </div> </div> <p> - The <span class="bold"><strong>which</strong></span> parameter is the message - value for which configuration is being checked. Must be set to one of the following values: - </p> + The <span class="bold"><strong>which</strong></span> parameter is + the message value for which configuration is being + checked. Must be set to one of the following values: + </p> <div class="itemizedlist"> <ul type="disc"> <li> + <p><a id="log_get_config_DB_LOG_BLOB"></a> + <code class="literal">DB_LOG_BLOB</code> + </p> + <p> + Enables full logging of + <a class="link" href="blob.html" title="Chapter 13. Binary Large Objects">BLOB</a> data. + </p> + </li> + <li> <p><a id="log_get_config_DB_LOG_DIRECT"></a> - <code class="literal">DB_LOG_DIRECT</code> - </p> + <code class="literal">DB_LOG_DIRECT</code> + </p> <p> - System buffering is turned off for Berkeley DB log files to avoid double - caching. - </p> + System buffering is turned off for Berkeley DB log + files to avoid double caching. + </p> </li> <li> <p><a id="log_get_config_DB_LOG_DSYNC"></a> - <code class="literal">DB_LOG_DSYNC</code> - </p> + <code class="literal">DB_LOG_DSYNC</code> + </p> <p> - Berkeley DB is configured to flush log writes to the backing disk before - returning from the write system call, rather than flushing log writes - explicitly in a separate system call, as necessary. - </p> + Berkeley DB is configured to flush log writes to the backing disk before + returning from the write system call, rather than flushing log writes + explicitly in a separate system call, as necessary. + </p> </li> <li> <p><a id="log_get_config_DB_LOG_AUTO_REMOVE"></a> - <code class="literal">DB_LOG_AUTO_REMOVE</code> - </p> + <code class="literal">DB_LOG_AUTO_REMOVE</code> + </p> <p> - Berkeley DB automatically removes log files that are no - longer needed. - </p> + Berkeley DB automatically removes log files that + are no longer needed. + </p> </li> <li> <p><a id="log_get_config_DB_LOG_IN_MEMORY"></a> - <code class="literal">DB_LOG_IN_MEMORY</code> - </p> + <code class="literal">DB_LOG_IN_MEMORY</code> + </p> <p> - Transaction logs are maintained in memory rather than on disk. This - means that transactions exhibit the ACI (atomicity, consistency, and - isolation) properties, but not D (durability). - </p> + Transaction logs are maintained in memory rather than on disk. This + means that transactions exhibit the ACI (atomicity, consistency, and + isolation) properties, but not D (durability). + </p> + </li> + <li> + <p><a id="log_get_config_DB_LOG_NOSYNC"></a> + <code class="literal">DB_LOG_NOSYNC</code> + </p> + <p> + The transaction log is not flushed from from the operating system cache to + stable storage when the logging system switches log files or a durable + transaction commits. This means that transactions exhibit the ACI + (atomicity, consistency, and isolation) properties, but only partially + support D (durability); that is, database integrity will be maintained if + the application fails and the environment is recovered, but not if the + system fails. All database files must be verified and/or restored from a + replication group master or archival backup after system failure. + </p> </li> <li> <p><a id="log_get_config_DB_LOG_ZERO"></a> - <code class="literal">DB_LOG_ZERO</code> - </p> + <code class="literal">DB_LOG_ZERO</code> + </p> <p> - All pages of a log file are zeroed when that log file is created. - </p> + All pages of a log file are zeroed when that log file is created. + </p> </li> </ul> </div> @@ -136,44 +161,46 @@ DB_ENV->log_get_config(DB_ENV *dbenv, u_int32_t which, int *onoffp); </pre> <div class="titlepage"> <div> <div> - <h4 class="title"><a id="idp60870936"></a>onoffp</h4> + <h4 class="title"><a id="idp2551832"></a>onoffp</h4> </div> </div> </div> <p> - The <span class="bold"><strong>onoffp</strong></span> parameter references - memory into which the configuration of the specified <span class="bold"><strong>which</strong></span> parameter is copied. - </p> + The <span class="bold"><strong>onoffp</strong></span> parameter + references memory into which the configuration of the + specified <span class="bold"><strong>which</strong></span> parameter + is copied. + </p> <p> - If the returned <span class="bold"><strong>onoff</strong></span> value is zero, the - parameter is off; otherwise, on. - </p> + If the returned <span class="bold"><strong>onoff</strong></span> + value is zero, the parameter is off; otherwise, on. + </p> </div> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> - <h3 class="title"><a id="idp60871368"></a>Class</h3> + <h3 class="title"><a id="idp2552048"></a>Class</h3> </div> </div> </div> <p> - <a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a> - </p> + <a class="link" href="env.html" title="Chapter 5. The DB_ENV Handle">DB_ENV</a> + </p> </div> <div class="sect2" lang="en" xml:lang="en"> <div class="titlepage"> <div> <div> - <h3 class="title"><a id="idp60873344"></a>See Also</h3> + <h3 class="title"><a id="idp2553776"></a>See Also</h3> </div> </div> </div> <p> - <a class="xref" href="lsn.html#loglist" title="Logging Subsystem and Related Methods">Logging Subsystem and Related Methods</a>, - <a class="xref" href="envlog_set_config.html" title="DB_ENV->log_set_config()">DB_ENV->log_set_config()</a> - </p> + <a class="xref" href="lsn.html#loglist" title="Logging Subsystem and Related Methods">Logging Subsystem and Related Methods</a>, + <a class="xref" href="envlog_set_config.html" title="DB_ENV->log_set_config()">DB_ENV->log_set_config()</a> + </p> </div> </div> <div class="navfooter"> |