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<title>Berkeley DB Reference Guide: Run-time configuration</title>
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<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Programmer Notes</dl></h3></td>
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<h1 align=center>Run-time configuration</h1>
<p>There are a few interfaces that support run-time configuration of Berkeley DB.
First is a group of interfaces that allow applications to intercept
Berkeley DB requests for underlying library or system call functionality:
<p><blockquote><pre><a href="../../api_c/set_func_close.html">db_env_set_func_close</a>
<a href="../../api_c/set_func_dirfree.html">db_env_set_func_dirfree</a>
<a href="../../api_c/set_func_dirlist.html">db_env_set_func_dirlist</a>
<a href="../../api_c/set_func_exists.html">db_env_set_func_exists</a>
<a href="../../api_c/set_func_free.html">db_env_set_func_free</a>
<a href="../../api_c/set_func_fsync.html">db_env_set_func_fsync</a>
<a href="../../api_c/set_func_ioinfo.html">db_env_set_func_ioinfo</a>
<a href="../../api_c/set_func_malloc.html">db_env_set_func_malloc</a>
<a href="../../api_c/set_func_map.html">db_env_set_func_map</a>
<a href="../../api_c/set_func_open.html">db_env_set_func_open</a>
<a href="../../api_c/set_func_read.html">db_env_set_func_read</a>
<a href="../../api_c/set_func_realloc.html">db_env_set_func_realloc</a>
<a href="../../api_c/set_func_seek.html">db_env_set_func_seek</a>
<a href="../../api_c/set_func_sleep.html">db_env_set_func_sleep</a>
<a href="../../api_c/set_func_unlink.html">db_env_set_func_unlink</a>
<a href="../../api_c/set_func_unmap.html">db_env_set_func_unmap</a>
<a href="../../api_c/set_func_write.html">db_env_set_func_write</a>
<a href="../../api_c/set_func_yield.html">db_env_set_func_yield</a></pre></blockquote>
<p>These interfaces are only available from the Berkeley DB C language API.
<p>In addition, there are a few interfaces that allow applications to
re-configure, on an application-wide basis, Berkeley DB behaviors.
<p><blockquote><pre><a href="../../api_c/env_set_mutexlocks.html">DBENV->set_mutexlocks</a>
<a href="../../api_c/env_set_pageyield.html">db_env_set_pageyield</a>
<a href="../../api_c/env_set_panicstate.html">db_env_set_panicstate</a>
<a href="../../api_c/env_set_region_init.html">db_env_set_region_init</a>
<a href="../../api_c/env_set_tas_spins.html">db_env_set_tas_spins</a></pre></blockquote>
<p>These interfaces are available from all of the Berkeley DB programmatic APIs.
<p>A not-uncommon problem for applications is the new API in Solaris 2.6
for manipulating large files. As this API was not part of Solaris 2.5,
it is difficult to create a single binary that takes advantage of the
large file functionality in Solaris 2.6 but which still runs on Solaris
2.5. <a href="solaris.txt">Example code</a> that supports this is
included in the Berkeley DB distribution.
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