Sindbad~EG File Manager
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<p>Library Version 18.1.40</p>
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<h2 class="title" style="clear: both"><a id="log_limits"></a>Log file limits</h2>
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<p>
Log filenames and sizes impose a limit on how long databases
may be used in a Berkeley DB database environment. It is quite
unlikely that an application will reach this limit; however,
if the limit is reached, the Berkeley DB environment's
databases must be dumped and reloaded.
</p>
<p>
The log filename consists of <span class="bold"><strong>log.</strong></span>
followed by 10 digits, with a maximum of
2,000,000,000 log files. Consider an application performing
6000 transactions per second for 24 hours a day, logged into
10MB log files, in which each transaction is logging
approximately 500 bytes of data. The following
calculation:
</p>
<pre class="programlisting">(10 * 2^20 * 2000000000) / (6000 * 500 * 365 * 60 * 60 * 24) = ~221</pre>
<p>
indicates that the system will run out of log filenames in
roughly 221 years.
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There is no way to reset the log filename space in Berkeley
DB. If your application is reaching the end of its log
filename space, you must do the following:
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Archive your databases as if to prepare for
catastrophic failure (see <a class="xref" href="transapp_archival.html" title="Database and log file archival">Database and log file
archival</a> for more
information).
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Reset the database's log sequence numbers (see the
<span class="bold"><strong>-r</strong></span> option to the
<a href="../api_reference/C/db_load.html" class="olink">db_load</a> utility for more information).
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Remove all of the log files from the database
environment. (This is the only situation in which all the
log files are removed from an environment; in all other
cases, at least a single log file is retained.)
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Restart your application.
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Sindbad File Manager Version 1.0, Coded By Sindbad EG ~ The Terrorists