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80 lines
4.1 KiB
80 lines
4.1 KiB
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>Database Statistics</title>
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<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Getting Started with the Oracle Berkeley DB SQL APIs" />
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<link rel="up" href="admin.html" title="Chapter 6. Administrating Berkeley DB SQL Databases" />
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<link rel="prev" href="recoverysql.html" title="Catastrophic Recovery" />
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<link rel="next" href="verifysql.html" title="Verify Database Structure" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 12.1.6.2</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">Database Statistics</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="recoverysql.html">Prev</a> </td>
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<th width="60%" align="center">Chapter 6. Administrating Berkeley DB SQL Databases</th>
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<td width="20%" align="right"> <a accesskey="n" href="verifysql.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="statsql"></a>Database Statistics</h2></div></div></div><p>
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The statistics utility can be used to print out information on
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tables in a database. A detailed description of the statistics
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utility is described at <a href="../api_reference/C/db_stat.html" class="olink">db_stat</a>
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. This
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section describes how to use the utility with a SQL database.
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</p><p>
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The first step in getting statistics on a table is to find the
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internal name for the table. The internal table name is
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<code class="literal">table#####</code>, where the number is the rootpage
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number, which can be retrieved using the following SQL statement:
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</p><code class="code">
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SELECT rootpage FROM sqlite_master WHERE name='[table name]';
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</code>
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For example, if the root page is 10, the internal table name
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will be <code class="literal">table00010</code>.
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<p>
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In order to run the <span class="command"><strong>db_stat</strong></span> utility,
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first add a <a href="../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a>
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file to the journal directory.
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In the file, add the following line:
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</p><code class="code">
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add_data_dir ..
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</code><p>
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Then execute the following command in the directory
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with the database:
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<span class="command"><strong>db_stat -d [file name] -h [journal directory] -s [internal table name]</strong></span>.
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That command will print out information on the table.
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</p></div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="recoverysql.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="admin.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="verifysql.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">Catastrophic Recovery </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> Verify Database Structure</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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