1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>New Berkeley DB SQL API PRAGMAs</title>
<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
<link rel="start" href="index.html" title="Berkeley DB Installation and Build Guide" />
<link rel="up" href="upgrade_53_toc.html" title="Chapter 9. Upgrading Berkeley DB 11.2.5.2 applications to Berkeley DB 11.2.5.3" />
<link rel="prev" href="upgrade_11gr2_53_sql_build.html" title="Changes in the SQL API Build" />
<link rel="next" href="upgrade_11gr2_53_sql_rep.html" title="Replication for Existing Databases in the SQL API" />
</head>
<body>
<div xmlns="" class="navheader">
<div class="libver">
<p>Library Version 11.2.5.3</p>
</div>
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">New Berkeley DB SQL API PRAGMAs</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="upgrade_11gr2_53_sql_build.html">Prev</a> </td>
<th width="60%" align="center">Chapter 9.
Upgrading Berkeley DB 11.2.5.2 applications to Berkeley DB 11.2.5.3
</th>
<td width="20%" align="right"> <a accesskey="n" href="upgrade_11gr2_53_sql_rep.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="sect1" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="upgrade_11gr2_53_sql_pragma"></a>New Berkeley DB SQL API PRAGMAs</h2>
</div>
</div>
</div>
<div class="toc">
<dl>
<dt>
<span class="sect2">
<a href="upgrade_11gr2_53_sql_pragma.html#idp843792">New PRAGMAs</a>
</span>
</dt>
</dl>
</div>
<p>
Two new Berkeley DB SQL API specific pragmas have been added,
<code class="literal">bdbsql_shared_resources</code> and
<code class="literal">bdbsql_set_lock_tablesize</code>.
<code class="literal">bdbsql_shared_resources</code> is used to set the maximum
amount of memory, in bytes, to be used by shared structures in the main
environment region, which is useful in applications with a large
number of tables, transactions, or threads.
<code class="literal">bdbsql_set_lock_tablesize</code> is used to set the number
of buckets in the lock object hash table in the Berkeley DB
environment, which is useful if an application has many concurrent
long running transactions.
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp843792"></a>New PRAGMAs</h3>
</div>
</div>
</div>
<div class="itemizedlist">
<ul type="disc">
<li>
<code class="literal">PRAGMA bdbsql_shared_resources[=N]</code>
</li>
<li>
<code class="literal">PRAGMA bdbsql_set_lock_tablesize[=N]</code>
</li>
</ul>
</div>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="upgrade_11gr2_53_sql_build.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="upgrade_53_toc.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="upgrade_11gr2_53_sql_rep.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">Changes in the SQL API Build </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> Replication for Existing Databases in the SQL API</td>
</tr>
</table>
</div>
</body>
</html>
|