| 36 |
kaklik |
1 |
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
|
|
2 |
<html>
|
|
|
3 |
<head>
|
|
|
4 |
<title>ADOdb Performance Monitoring Library</title>
|
|
|
5 |
<style type="text/css">
|
|
|
6 |
body, td {
|
|
|
7 |
/*font-family: Arial, Helvetica, sans-serif;*/
|
|
|
8 |
font-size: 11pt;
|
|
|
9 |
}
|
|
|
10 |
pre {
|
|
|
11 |
font-size: 9pt;
|
|
|
12 |
background-color: #EEEEEE; padding: .5em; margin: 0px;
|
|
|
13 |
}
|
|
|
14 |
.toplink {
|
|
|
15 |
font-size: 8pt;
|
|
|
16 |
}
|
|
|
17 |
</style>
|
|
|
18 |
</head>
|
|
|
19 |
<body>
|
|
|
20 |
<h3>The ADOdb Performance Monitoring Library</h3>
|
|
|
21 |
<p>V4.80 8 Mar 2006 (c) 2000-2006 John Lim (jlim#natsoft.com.my)</p>
|
|
|
22 |
<p><font size="1">This software is dual licensed using BSD-Style and
|
|
|
23 |
LGPL. This means you can use it in compiled proprietary and commercial
|
|
|
24 |
products.</font></p>
|
|
|
25 |
<p>Useful ADOdb links: <a href="http://adodb.sourceforge.net/#download">Download</a>
|
|
|
26 |
<a href="http://adodb.sourceforge.net/#docs">Other Docs</a>
|
|
|
27 |
</p>
|
|
|
28 |
<h3>Introduction</h3>
|
|
|
29 |
<p>This module, part of the ADOdb package, provides both CLI and HTML
|
|
|
30 |
interfaces for viewing key performance indicators of your database.
|
|
|
31 |
This is very useful because web apps such as the popular phpMyAdmin
|
|
|
32 |
currently do not provide effective database health monitoring tools.
|
|
|
33 |
The module provides the following: </p>
|
|
|
34 |
<ul>
|
|
|
35 |
<li>A quick health check of your database server using <code>$perf->HealthCheck()</code>
|
|
|
36 |
or <code>$perf->HealthCheckCLI()</code>. </li>
|
|
|
37 |
<li>User interface for performance monitoring, <code>$perf->UI()</code>.
|
|
|
38 |
This UI displays:
|
|
|
39 |
<ul>
|
|
|
40 |
<li>the health check, </li>
|
|
|
41 |
<li>all SQL logged and their query plans, </li>
|
|
|
42 |
<li>a list of all tables in the current database</li>
|
|
|
43 |
<li>an interface to continiously poll the server for key
|
|
|
44 |
performance indicators such as CPU, Hit Ratio, Disk I/O</li>
|
|
|
45 |
<li>a form where you can enter and run SQL interactively.</li>
|
|
|
46 |
</ul>
|
|
|
47 |
</li>
|
|
|
48 |
<li>Gives you an API to build database monitoring tools for a server
|
|
|
49 |
farm, for example calling <code>$perf->DBParameter('data cache hit
|
|
|
50 |
ratio')</code> returns this very important statistic in a database
|
|
|
51 |
independant manner. </li>
|
|
|
52 |
</ul>
|
|
|
53 |
<p>ADOdb also has the ability to log all SQL executed, using <a
|
|
|
54 |
href="docs-adodb.htm#logsql">LogSQL</a>. All SQL logged can be
|
|
|
55 |
analyzed through the performance monitor <a href="#ui">UI</a>. In the <i>View
|
|
|
56 |
SQL</i> mode, we categorize the SQL into 3 types:
|
|
|
57 |
</p>
|
|
|
58 |
<ul>
|
|
|
59 |
<li><b>Suspicious SQL</b>: queries with high average execution times,
|
|
|
60 |
and are potential candidates for rewriting</li>
|
|
|
61 |
<li><b>Expensive SQL</b>: queries with high total execution times
|
|
|
62 |
(#executions * avg execution time). Optimizing these queries will
|
|
|
63 |
reduce your database server load.</li>
|
|
|
64 |
<li><b>Invalid SQL</b>: queries that generate errors.</li>
|
|
|
65 |
</ul>
|
|
|
66 |
<p>Each query is hyperlinked to a description of the query plan, and
|
|
|
67 |
every PHP script that executed that query is also shown.</p>
|
|
|
68 |
<p>Please note that the information presented is a very basic database
|
|
|
69 |
health check, and does not provide a complete overview of database
|
|
|
70 |
performance. Although some attempt has been made to make it work across
|
|
|
71 |
multiple databases in the same way, it is impossible to do so. For the
|
|
|
72 |
health check, we do try to display the following key database
|
|
|
73 |
parameters for all drivers:</p>
|
|
|
74 |
<ul>
|
|
|
75 |
<li><b>data cache size</b> - The amount of memory allocated to the
|
|
|
76 |
cache.</li>
|
|
|
77 |
<li><b>data cache hit ratio</b> - A measure of how effective the
|
|
|
78 |
cache is, as a percentage. The higher, the better.</li>
|
|
|
79 |
<li><b>current connections</b> - The number of sessions currently
|
|
|
80 |
connected to the database. </li>
|
|
|
81 |
</ul>
|
|
|
82 |
<p>You will need to connect to the database as an administrator to view
|
|
|
83 |
most of the parameters. </p>
|
|
|
84 |
<p>Code improvements as very welcome, particularly adding new database
|
|
|
85 |
parameters and automated tuning hints.</p>
|
|
|
86 |
<a name="usage"></a>
|
|
|
87 |
<h3>Usage</h3>
|
|
|
88 |
<p>Currently, the following drivers: <em>mysql</em>, <em>postgres</em>,
|
|
|
89 |
<em>oci8</em>, <em>mssql</em>, <i>informix</i> and <em>db2</em> are
|
|
|
90 |
supported. To create a new performance monitor, call NewPerfMonitor( )
|
|
|
91 |
as demonstrated below: </p>
|
|
|
92 |
<pre><?php<br>include_once('adodb.inc.php');<br>session_start(); <font
|
|
|
93 |
color="#006600"># session variables required for monitoring</font><br>$conn = ADONewConnection($driver);<br>$conn->Connect($server,$user,$pwd,$db);<br>$perf =& NewPerfMonitor($conn);<br>$perf->UI($pollsecs=5);<br>?><br></pre>
|
|
|
94 |
<p>It is also possible to retrieve a single database parameter:</p>
|
|
|
95 |
<pre>$size = $perf->DBParameter('data cache size');<br></pre>
|
|
|
96 |
<p>
|
|
|
97 |
Thx to Fernando Ortiz for the informix module. </p>
|
|
|
98 |
<h3>Methods</h3>
|
|
|
99 |
<a name="ui"></a>
|
|
|
100 |
<p><font face="Courier New, Courier, mono">function <b>UI($pollsecs=5)</b></font></p>
|
|
|
101 |
<p>Creates a web-based user interface for performance monitoring. When
|
|
|
102 |
you click on Poll, server statistics will be displayed every $pollsecs
|
|
|
103 |
seconds. See <a href="#usage">Usage</a> above. </p>
|
|
|
104 |
<p>Since 4.11, we allow users to enter and run SQL interactively via
|
|
|
105 |
the "Run SQL" link. To disable this for security reasons, set this
|
|
|
106 |
constant before calling $perf->UI(). </p>
|
|
|
107 |
<p> </p>
|
|
|
108 |
<pre>define('ADODB_PERF_NO_RUN_SQL',1);</pre>
|
|
|
109 |
<p>Sample output follows below:</p>
|
|
|
110 |
<table bgcolor="lightyellow" border="1" width="100%">
|
|
|
111 |
<tbody>
|
|
|
112 |
<tr>
|
|
|
113 |
<td> <b><a href="http://php.weblogs.com/adodb?perf=1">ADOdb</a>
|
|
|
114 |
Performance Monitor</b> for localhost, db=test<br>
|
|
|
115 |
<font size="-1">PostgreSQL 7.3.2 on i686-pc-cygwin, compiled by
|
|
|
116 |
GCC gcc (GCC) 3.2 20020927 (prerelease)</font></td>
|
|
|
117 |
</tr>
|
|
|
118 |
<tr>
|
|
|
119 |
<td> <a href="#">Performance Stats</a> <a href="#">View
|
|
|
120 |
SQL</a> <a href="#">View Tables</a> <a href="#">Poll
|
|
|
121 |
Stats</a></td>
|
|
|
122 |
</tr>
|
|
|
123 |
</tbody>
|
|
|
124 |
</table>
|
|
|
125 |
<table bgcolor="white" border="1">
|
|
|
126 |
<tbody>
|
|
|
127 |
<tr>
|
|
|
128 |
<td colspan="3">
|
|
|
129 |
<h3>postgres7</h3>
|
|
|
130 |
</td>
|
|
|
131 |
</tr>
|
|
|
132 |
<tr>
|
|
|
133 |
<td><b>Parameter</b></td>
|
|
|
134 |
<td><b>Value</b></td>
|
|
|
135 |
<td><b>Description</b></td>
|
|
|
136 |
</tr>
|
|
|
137 |
<tr bgcolor="#f0f0f0">
|
|
|
138 |
<td colspan="3"><i>Ratios</i> </td>
|
|
|
139 |
</tr>
|
|
|
140 |
<tr>
|
|
|
141 |
<td>statistics collector</td>
|
|
|
142 |
<td>TRUE</td>
|
|
|
143 |
<td>Value must be TRUE to enable hit ratio statistics (<i>stats_start_collector</i>,<i>stats_row_level</i>
|
|
|
144 |
and <i>stats_block_level</i> must be set to true in postgresql.conf)</td>
|
|
|
145 |
</tr>
|
|
|
146 |
<tr>
|
|
|
147 |
<td>data cache hit ratio</td>
|
|
|
148 |
<td>99.7967555299239</td>
|
|
|
149 |
<td> </td>
|
|
|
150 |
</tr>
|
|
|
151 |
<tr bgcolor="#f0f0f0">
|
|
|
152 |
<td colspan="3"><i>IO</i> </td>
|
|
|
153 |
</tr>
|
|
|
154 |
<tr>
|
|
|
155 |
<td>data reads</td>
|
|
|
156 |
<td>125</td>
|
|
|
157 |
<td> </td>
|
|
|
158 |
</tr>
|
|
|
159 |
<tr>
|
|
|
160 |
<td>data writes</td>
|
|
|
161 |
<td>21.78125000000000000</td>
|
|
|
162 |
<td>Count of inserts/updates/deletes * coef</td>
|
|
|
163 |
</tr>
|
|
|
164 |
<tr bgcolor="#f0f0f0">
|
|
|
165 |
<td colspan="3"><i>Data Cache</i> </td>
|
|
|
166 |
</tr>
|
|
|
167 |
<tr>
|
|
|
168 |
<td>data cache buffers</td>
|
|
|
169 |
<td>640</td>
|
|
|
170 |
<td>Number of cache buffers. <a
|
|
|
171 |
href="http://www.varlena.com/GeneralBits/Tidbits/perf.html#basic">Tuning</a></td>
|
|
|
172 |
</tr>
|
|
|
173 |
<tr>
|
|
|
174 |
<td>cache blocksize</td>
|
|
|
175 |
<td>8192</td>
|
|
|
176 |
<td>(estimate)</td>
|
|
|
177 |
</tr>
|
|
|
178 |
<tr>
|
|
|
179 |
<td>data cache size</td>
|
|
|
180 |
<td>5M</td>
|
|
|
181 |
<td> </td>
|
|
|
182 |
</tr>
|
|
|
183 |
<tr>
|
|
|
184 |
<td>operating system cache size</td>
|
|
|
185 |
<td>80M</td>
|
|
|
186 |
<td>(effective cache size)</td>
|
|
|
187 |
</tr>
|
|
|
188 |
<tr bgcolor="#f0f0f0">
|
|
|
189 |
<td colspan="3"><i>Memory Usage</i> </td>
|
|
|
190 |
</tr>
|
|
|
191 |
<tr>
|
|
|
192 |
<td>sort buffer size</td>
|
|
|
193 |
<td>1M</td>
|
|
|
194 |
<td>Size of sort buffer (per query)</td>
|
|
|
195 |
</tr>
|
|
|
196 |
<tr bgcolor="#f0f0f0">
|
|
|
197 |
<td colspan="3"><i>Connections</i> </td>
|
|
|
198 |
</tr>
|
|
|
199 |
<tr>
|
|
|
200 |
<td>current connections</td>
|
|
|
201 |
<td>0</td>
|
|
|
202 |
<td> </td>
|
|
|
203 |
</tr>
|
|
|
204 |
<tr>
|
|
|
205 |
<td>max connections</td>
|
|
|
206 |
<td>32</td>
|
|
|
207 |
<td> </td>
|
|
|
208 |
</tr>
|
|
|
209 |
<tr bgcolor="#f0f0f0">
|
|
|
210 |
<td colspan="3"><i>Parameters</i> </td>
|
|
|
211 |
</tr>
|
|
|
212 |
<tr>
|
|
|
213 |
<td>rollback buffers</td>
|
|
|
214 |
<td>8</td>
|
|
|
215 |
<td>WAL buffers</td>
|
|
|
216 |
</tr>
|
|
|
217 |
<tr>
|
|
|
218 |
<td>random page cost</td>
|
|
|
219 |
<td>4</td>
|
|
|
220 |
<td>Cost of doing a seek (default=4). See <a
|
|
|
221 |
href="http://www.varlena.com/GeneralBits/Tidbits/perf.html#less">random_page_cost</a></td>
|
|
|
222 |
</tr>
|
|
|
223 |
</tbody>
|
|
|
224 |
</table>
|
|
|
225 |
<p><font face="Courier New, Courier, mono">function <b>HealthCheck</b>()</font></p>
|
|
|
226 |
<p>Returns database health check parameters as a HTML table. You will
|
|
|
227 |
need to echo or print the output of this function,</p>
|
|
|
228 |
<p><font face="Courier New, Courier, mono">function <b>HealthCheckCLI</b>()</font></p>
|
|
|
229 |
<p>Returns database health check parameters formatted for a command
|
|
|
230 |
line interface. You will need to echo or print the output of this
|
|
|
231 |
function. Sample output for mysql:</p>
|
|
|
232 |
<pre>-- Ratios -- <br> MyISAM cache hit ratio => 56.5635738832 <br> InnoDB cache hit ratio => 0 <br> sql cache hit ratio => 0 <br> -- IO -- <br> data reads => 2622 <br> data writes => 2415.5 <br> -- Data Cache -- <br> MyISAM data cache size => 512K <br> BDB data cache size => 8388600<br> InnoDB data cache size => 8M<br> -- Memory Pools -- <br> read buffer size => 131072 <br> sort buffer size => 65528 <br> table cache => 4 <br> -- Connections -- <br> current connections => 3<br> max connections => 100</pre>
|
|
|
233 |
<p><font face="Courier New, Courier, mono">function <b>Poll</b>($pollSecs=5)
|
|
|
234 |
</font> </p>
|
|
|
235 |
<p> Run in infinite loop, displaying the following information every
|
|
|
236 |
$pollSecs. This will not work properly if output buffering is enabled.
|
|
|
237 |
In the example below, $pollSecs=3:
|
|
|
238 |
</p>
|
|
|
239 |
<pre>Accumulating statistics...<br> Time WS-CPU% Hit% Sess Reads/s Writes/s<br>11:08:30 0.7 56.56 1 0.0000 0.0000<br>11:08:33 1.8 56.56 2 0.0000 0.0000<br>11:08:36 11.1 56.55 3 2.5000 0.0000<br>11:08:39 9.8 56.55 2 3.1121 0.0000<br>11:08:42 2.8 56.55 1 0.0000 0.0000<br>11:08:45 7.4 56.55 2 0.0000 1.5000<br></pre>
|
|
|
240 |
<p><b>WS-CPU%</b> is the Web Server CPU load of the server that PHP is
|
|
|
241 |
running from (eg. the database client), and not the database. The <b>Hit%</b>
|
|
|
242 |
is the data cache hit ratio. <b>Sess</b> is the current number of
|
|
|
243 |
sessions connected to the database. If you are using persistent
|
|
|
244 |
connections, this should not change much. The <b>Reads/s</b> and <b>Writes/s</b>
|
|
|
245 |
are synthetic values to give the viewer a rough guide to I/O, and are
|
|
|
246 |
not to be taken literally. </p>
|
|
|
247 |
<p><font face="Courier New, Courier, mono">function <b>SuspiciousSQL</b>($numsql=10)</font></p>
|
|
|
248 |
<p>Returns SQL which have high average execution times as a HTML table.
|
|
|
249 |
Each sql statement
|
|
|
250 |
is hyperlinked to a new window which details the execution plan and the
|
|
|
251 |
scripts that execute this SQL.
|
|
|
252 |
</p>
|
|
|
253 |
<p> The number of statements returned is determined by $numsql. Data is
|
|
|
254 |
taken from the adodb_logsql table, where the sql statements are logged
|
|
|
255 |
when
|
|
|
256 |
$connection->LogSQL(true) is enabled. The adodb_logsql table is
|
|
|
257 |
populated using <a href="docs-adodb.htm#logsql">$conn->LogSQL</a>.
|
|
|
258 |
</p>
|
|
|
259 |
<p>For Oracle, Ixora Suspicious SQL returns a list of SQL statements
|
|
|
260 |
that are most cache intensive as a HTML table. These are data intensive
|
|
|
261 |
SQL statements that could benefit most from tuning. </p>
|
|
|
262 |
<p><font face="Courier New, Courier, mono">function <b>ExpensiveSQL</b>($numsql=10)</font></p>
|
|
|
263 |
<p>Returns SQL whose total execution time (avg time * #executions) is
|
|
|
264 |
high as a HTML table. Each sql statement
|
|
|
265 |
is hyperlinked to a new window which details the execution plan and the
|
|
|
266 |
scripts that execute this SQL.
|
|
|
267 |
</p>
|
|
|
268 |
<p> The number of statements returned is determined by $numsql. Data is
|
|
|
269 |
taken from the adodb_logsql table, where the sql statements are logged
|
|
|
270 |
when
|
|
|
271 |
$connection->LogSQL(true) is enabled. The adodb_logsql table is
|
|
|
272 |
populated using <a href="docs-adodb.htm#logsql">$conn->LogSQL</a>.
|
|
|
273 |
</p>
|
|
|
274 |
<p>For Oracle, Ixora Expensive SQL returns a list of SQL statements
|
|
|
275 |
that are taking the most CPU load when run.
|
|
|
276 |
</p>
|
|
|
277 |
<p><font face="Courier New, Courier, mono">function <b>InvalidSQL</b>($numsql=10)</font></p>
|
|
|
278 |
<p>Returns a list of invalid SQL as an HTML table.
|
|
|
279 |
</p>
|
|
|
280 |
<p>Data is taken from the adodb_logsql table, where the sql statements
|
|
|
281 |
are logged when
|
|
|
282 |
$connection->LogSQL(true) is enabled.
|
|
|
283 |
</p>
|
|
|
284 |
<p><font face="Courier New, Courier, mono">function <b>Tables</b>($orderby=1)</font></p>
|
|
|
285 |
<p>Returns information on all tables in a database, with the first two
|
|
|
286 |
fields containing the table name and table size, the remaining fields
|
|
|
287 |
depend on the database driver. If $orderby is set to 1, it will sort by
|
|
|
288 |
name. If $orderby is set to 2, then it will sort by table size. Some
|
|
|
289 |
database drivers (mssql and mysql) will ignore the $orderby clause. For
|
|
|
290 |
postgresql, the information is up-to-date since the last <i>vacuum</i>.
|
|
|
291 |
Not supported currently for db2.</p>
|
|
|
292 |
<h3>Raw Functions</h3>
|
|
|
293 |
<p>Raw functions return values without any formatting.</p>
|
|
|
294 |
<p><font face="Courier New, Courier, mono">function <b>DBParameter</b>($paramname)</font></p>
|
|
|
295 |
<p>Returns the value of a database parameter, such as
|
|
|
296 |
$this->DBParameter("data cache size").</p>
|
|
|
297 |
<p><font face="Courier New, Courier, mono">function <b>CPULoad</b>()</font></p>
|
|
|
298 |
<p>Returns the CPU load of the database client (NOT THE SERVER) as a
|
|
|
299 |
percentage. Only works for Linux and Windows. For Windows, WMI must be
|
|
|
300 |
available.</p>
|
|
|
301 |
<h3>Format of $settings Property</h3>
|
|
|
302 |
<p> To create new database parameters, you need to understand
|
|
|
303 |
$settings. The $settings data structure is an associative array. Each
|
|
|
304 |
element of the array defines a database parameter. The key is the name
|
|
|
305 |
of the database parameter. If no key is defined, then it is assumed to
|
|
|
306 |
be a section break, and the value is the name of the section break. If
|
|
|
307 |
this is too confusing, looking at the source code will help a lot!</p>
|
|
|
308 |
<p> Each database parameter is itself an array consisting of the
|
|
|
309 |
following elements:</p>
|
|
|
310 |
<ol start="0">
|
|
|
311 |
<li> Category code, used to group related db parameters. If the
|
|
|
312 |
category code is 'HIDE', then
|
|
|
313 |
the database parameter is not shown when HTML() is called. <br>
|
|
|
314 |
</li>
|
|
|
315 |
<li> either
|
|
|
316 |
<ol type="a">
|
|
|
317 |
<li>sql string to retrieve value, eg. "select value from
|
|
|
318 |
v\$parameter where name='db_block_size'", </li>
|
|
|
319 |
<li>array holding sql string and field to look for, e.g.
|
|
|
320 |
array('show variables','table_cache'); optional 3rd parameter is the
|
|
|
321 |
$rs->fields[$index] to use (otherwise $index=1), and optional 4th
|
|
|
322 |
parameter is a constant to multiply the result with (typically 100 for
|
|
|
323 |
percentage calculations),</li>
|
|
|
324 |
<li>a string prefixed by =, then a PHP method of the class is
|
|
|
325 |
invoked, e.g. to invoke $this->GetIndexValue(), set this array
|
|
|
326 |
element to '=GetIndexValue', <br>
|
|
|
327 |
</li>
|
|
|
328 |
</ol>
|
|
|
329 |
</li>
|
|
|
330 |
<li> Description of database parameter. If description begins with an
|
|
|
331 |
=, then it is interpreted as a method call, just as in (1c) above,
|
|
|
332 |
taking one parameter, the current value. E.g. '=GetIndexDescription'
|
|
|
333 |
will invoke $this->GetIndexDescription($val). This is useful for
|
|
|
334 |
generating tuning suggestions. For an example, see WarnCacheRatio().</li>
|
|
|
335 |
</ol>
|
|
|
336 |
<p>Example from MySQL, table_cache database parameter:</p>
|
|
|
337 |
<pre>'table cache' => array('CACHE', # category code<br> array("show variables", 'table_cache'), # array (type 1b)<br> 'Number of tables to keep open'), # description</pre>
|
|
|
338 |
<h3>Example Health Check Output</h3>
|
|
|
339 |
<p><a href="#db2">db2</a> <a href="#informix">informix</a> <a
|
|
|
340 |
href="#mysql">mysql</a> <a href="#mssql">mssql</a> <a href="#oci8">oci8</a>
|
|
|
341 |
<a href="#postgres">postgres</a></p>
|
|
|
342 |
<p><a name="db2"></a></p>
|
|
|
343 |
<table bgcolor="white" border="1">
|
|
|
344 |
<tbody>
|
|
|
345 |
<tr>
|
|
|
346 |
<td colspan="3">
|
|
|
347 |
<h3>db2</h3>
|
|
|
348 |
</td>
|
|
|
349 |
</tr>
|
|
|
350 |
<tr>
|
|
|
351 |
<td><b>Parameter</b></td>
|
|
|
352 |
<td><b>Value</b></td>
|
|
|
353 |
<td><b>Description</b></td>
|
|
|
354 |
</tr>
|
|
|
355 |
<tr bgcolor="#f0f0f0">
|
|
|
356 |
<td colspan="3"><i>Ratios</i> </td>
|
|
|
357 |
</tr>
|
|
|
358 |
<tr bgcolor="#ffffff">
|
|
|
359 |
<td>data cache hit ratio</td>
|
|
|
360 |
<td>0 </td>
|
|
|
361 |
<td> </td>
|
|
|
362 |
</tr>
|
|
|
363 |
<tr bgcolor="#f0f0f0">
|
|
|
364 |
<td colspan="3"><i>Data Cache</i></td>
|
|
|
365 |
</tr>
|
|
|
366 |
<tr bgcolor="#ffffff">
|
|
|
367 |
<td>data cache buffers</td>
|
|
|
368 |
<td>250 </td>
|
|
|
369 |
<td>See <a
|
|
|
370 |
href="http://www7b.boulder.ibm.com/dmdd/library/techarticle/anshum/0107anshum.html#bufferpoolsize">tuning
|
|
|
371 |
reference</a>.</td>
|
|
|
372 |
</tr>
|
|
|
373 |
<tr bgcolor="#ffffff">
|
|
|
374 |
<td>cache blocksize</td>
|
|
|
375 |
<td>4096 </td>
|
|
|
376 |
<td> </td>
|
|
|
377 |
</tr>
|
|
|
378 |
<tr bgcolor="#ffffff">
|
|
|
379 |
<td>data cache size</td>
|
|
|
380 |
<td>1000K </td>
|
|
|
381 |
<td> </td>
|
|
|
382 |
</tr>
|
|
|
383 |
<tr bgcolor="#f0f0f0">
|
|
|
384 |
<td colspan="3"><i>Connections</i></td>
|
|
|
385 |
</tr>
|
|
|
386 |
<tr bgcolor="#ffffff">
|
|
|
387 |
<td>current connections</td>
|
|
|
388 |
<td>2 </td>
|
|
|
389 |
<td> </td>
|
|
|
390 |
</tr>
|
|
|
391 |
</tbody>
|
|
|
392 |
</table>
|
|
|
393 |
<p> </p>
|
|
|
394 |
<p><a name="informix"></a>
|
|
|
395 |
<table bgcolor="white" border="1">
|
|
|
396 |
<tbody>
|
|
|
397 |
<tr>
|
|
|
398 |
<td colspan="3">
|
|
|
399 |
<h3>informix</h3>
|
|
|
400 |
</td>
|
|
|
401 |
</tr>
|
|
|
402 |
<tr>
|
|
|
403 |
<td><b>Parameter</b></td>
|
|
|
404 |
<td><b>Val
|
|
|
405 |
ue</b></td>
|
|
|
406 |
<td><b>Description</b></td>
|
|
|
407 |
</tr>
|
|
|
408 |
<tr bgcolor="#f0f0f0">
|
|
|
409 |
<td colspan="3"><i>Ratios</i> </td>
|
|
|
410 |
</tr>
|
|
|
411 |
<tr>
|
|
|
412 |
<td>data cache hit
|
|
|
413 |
ratio</td>
|
|
|
414 |
<td>95.89</td>
|
|
|
415 |
<td> </td>
|
|
|
416 |
</tr>
|
|
|
417 |
<tr bgcolor="#f0f0f0">
|
|
|
418 |
<td colspan="3"><i>IO</i> </td>
|
|
|
419 |
</tr>
|
|
|
420 |
<tr>
|
|
|
421 |
<td>data
|
|
|
422 |
reads</td>
|
|
|
423 |
<td>1883884</td>
|
|
|
424 |
<td>Page reads</td>
|
|
|
425 |
</tr>
|
|
|
426 |
<tr>
|
|
|
427 |
<td>data writes</td>
|
|
|
428 |
<td>1716724</td>
|
|
|
429 |
<td>Page writes</td>
|
|
|
430 |
</tr>
|
|
|
431 |
<tr bgcolor="#f0f0f0">
|
|
|
432 |
<td colspan="3"><i>Connections</i>
|
|
|
433 |
</td>
|
|
|
434 |
</tr>
|
|
|
435 |
<tr>
|
|
|
436 |
<td>current connections</td>
|
|
|
437 |
<td>263.0</td>
|
|
|
438 |
<td>Number of
|
|
|
439 |
sessions</td>
|
|
|
440 |
</tr>
|
|
|
441 |
</tbody>
|
|
|
442 |
</table>
|
|
|
443 |
</p>
|
|
|
444 |
<p> </p>
|
|
|
445 |
<p><a name="mysql" id="mysql"></a></p>
|
|
|
446 |
<table bgcolor="white" border="1">
|
|
|
447 |
<tbody>
|
|
|
448 |
<tr>
|
|
|
449 |
<td colspan="3">
|
|
|
450 |
<h3>mysql</h3>
|
|
|
451 |
</td>
|
|
|
452 |
</tr>
|
|
|
453 |
<tr>
|
|
|
454 |
<td><b>Parameter</b></td>
|
|
|
455 |
<td><b>Value</b></td>
|
|
|
456 |
<td><b>Description</b></td>
|
|
|
457 |
</tr>
|
|
|
458 |
<tr bgcolor="#f0f0f0">
|
|
|
459 |
<td colspan="3"><i>Ratios</i> </td>
|
|
|
460 |
</tr>
|
|
|
461 |
<tr>
|
|
|
462 |
<td>MyISAM cache hit ratio</td>
|
|
|
463 |
<td>56.5658301822</td>
|
|
|
464 |
<td><font color="red"><b>Cache ratio should be at least 90%</b></font></td>
|
|
|
465 |
</tr>
|
|
|
466 |
<tr>
|
|
|
467 |
<td>InnoDB cache hit ratio</td>
|
|
|
468 |
<td>0</td>
|
|
|
469 |
<td><font color="red"><b>Cache ratio should be at least 90%</b></font></td>
|
|
|
470 |
</tr>
|
|
|
471 |
<tr>
|
|
|
472 |
<td>sql cache hit ratio</td>
|
|
|
473 |
<td>0</td>
|
|
|
474 |
<td> </td>
|
|
|
475 |
</tr>
|
|
|
476 |
<tr bgcolor="#f0f0f0">
|
|
|
477 |
<td colspan="3"><i>IO</i> </td>
|
|
|
478 |
</tr>
|
|
|
479 |
<tr>
|
|
|
480 |
<td>data reads</td>
|
|
|
481 |
<td>2622</td>
|
|
|
482 |
<td>Number of selects (Key_reads is not accurate)</td>
|
|
|
483 |
</tr>
|
|
|
484 |
<tr>
|
|
|
485 |
<td>data writes</td>
|
|
|
486 |
<td>2415.5</td>
|
|
|
487 |
<td>Number of inserts/updates/deletes * coef (Key_writes is not
|
|
|
488 |
accurate)</td>
|
|
|
489 |
</tr>
|
|
|
490 |
<tr bgcolor="#f0f0f0">
|
|
|
491 |
<td colspan="3"><i>Data Cache</i> </td>
|
|
|
492 |
</tr>
|
|
|
493 |
<tr>
|
|
|
494 |
<td>MyISAM data cache size</td>
|
|
|
495 |
<td>512K</td>
|
|
|
496 |
<td> </td>
|
|
|
497 |
</tr>
|
|
|
498 |
<tr>
|
|
|
499 |
<td>BDB data cache size</td>
|
|
|
500 |
<td>8388600</td>
|
|
|
501 |
<td> </td>
|
|
|
502 |
</tr>
|
|
|
503 |
<tr>
|
|
|
504 |
<td>InnoDB data cache size</td>
|
|
|
505 |
<td>8M</td>
|
|
|
506 |
<td> </td>
|
|
|
507 |
</tr>
|
|
|
508 |
<tr bgcolor="#f0f0f0">
|
|
|
509 |
<td colspan="3"><i>Memory Pools</i> </td>
|
|
|
510 |
</tr>
|
|
|
511 |
<tr>
|
|
|
512 |
<td>read buffer size</td>
|
|
|
513 |
<td>131072</td>
|
|
|
514 |
<td>(per session)</td>
|
|
|
515 |
</tr>
|
|
|
516 |
<tr>
|
|
|
517 |
<td>sort buffer size</td>
|
|
|
518 |
<td>65528</td>
|
|
|
519 |
<td>Size of sort buffer (per session)</td>
|
|
|
520 |
</tr>
|
|
|
521 |
<tr>
|
|
|
522 |
<td>table cache</td>
|
|
|
523 |
<td>4</td>
|
|
|
524 |
<td>Number of tables to keep open</td>
|
|
|
525 |
</tr>
|
|
|
526 |
<tr bgcolor="#f0f0f0">
|
|
|
527 |
<td colspan="3"><i>Connections</i> </td>
|
|
|
528 |
</tr>
|
|
|
529 |
<tr>
|
|
|
530 |
<td>current connections</td>
|
|
|
531 |
<td>3</td>
|
|
|
532 |
<td> </td>
|
|
|
533 |
</tr>
|
|
|
534 |
<tr>
|
|
|
535 |
<td>max connections</td>
|
|
|
536 |
<td>100</td>
|
|
|
537 |
<td> </td>
|
|
|
538 |
</tr>
|
|
|
539 |
</tbody>
|
|
|
540 |
</table>
|
|
|
541 |
<p> </p>
|
|
|
542 |
<p><a name="mssql" id="mssql"></a></p>
|
|
|
543 |
<table bgcolor="white" border="1">
|
|
|
544 |
<tbody>
|
|
|
545 |
<tr>
|
|
|
546 |
<td colspan="3">
|
|
|
547 |
<h3>mssql</h3>
|
|
|
548 |
</td>
|
|
|
549 |
</tr>
|
|
|
550 |
<tr>
|
|
|
551 |
<td><b>Parameter</b></td>
|
|
|
552 |
<td><b>Value</b></td>
|
|
|
553 |
<td><b>Description</b></td>
|
|
|
554 |
</tr>
|
|
|
555 |
<tr bgcolor="#f0f0f0">
|
|
|
556 |
<td colspan="3"><i>Ratios</i> </td>
|
|
|
557 |
</tr>
|
|
|
558 |
<tr>
|
|
|
559 |
<td>data cache hit ratio</td>
|
|
|
560 |
<td>99.9999694824</td>
|
|
|
561 |
<td> </td>
|
|
|
562 |
</tr>
|
|
|
563 |
<tr>
|
|
|
564 |
<td>prepared sql hit ratio</td>
|
|
|
565 |
<td>99.7738579828</td>
|
|
|
566 |
<td> </td>
|
|
|
567 |
</tr>
|
|
|
568 |
<tr>
|
|
|
569 |
<td>adhoc sql hit ratio</td>
|
|
|
570 |
<td>98.4540169133</td>
|
|
|
571 |
<td> </td>
|
|
|
572 |
</tr>
|
|
|
573 |
<tr bgcolor="#f0f0f0">
|
|
|
574 |
<td colspan="3"><i>IO</i> </td>
|
|
|
575 |
</tr>
|
|
|
576 |
<tr>
|
|
|
577 |
<td>data reads</td>
|
|
|
578 |
<td>2858</td>
|
|
|
579 |
<td> </td>
|
|
|
580 |
</tr>
|
|
|
581 |
<tr>
|
|
|
582 |
<td>data writes</td>
|
|
|
583 |
<td>1438</td>
|
|
|
584 |
<td> </td>
|
|
|
585 |
</tr>
|
|
|
586 |
<tr bgcolor="#f0f0f0">
|
|
|
587 |
<td colspan="3"><i>Data Cache</i> </td>
|
|
|
588 |
</tr>
|
|
|
589 |
<tr>
|
|
|
590 |
<td>data cache size</td>
|
|
|
591 |
<td>4362</td>
|
|
|
592 |
<td>in K</td>
|
|
|
593 |
</tr>
|
|
|
594 |
<tr bgcolor="#f0f0f0">
|
|
|
595 |
<td colspan="3"><i>Connections</i> </td>
|
|
|
596 |
</tr>
|
|
|
597 |
<tr>
|
|
|
598 |
<td>current connections</td>
|
|
|
599 |
<td>14</td>
|
|
|
600 |
<td> </td>
|
|
|
601 |
</tr>
|
|
|
602 |
<tr>
|
|
|
603 |
<td>max connections</td>
|
|
|
604 |
<td>32767</td>
|
|
|
605 |
<td> </td>
|
|
|
606 |
</tr>
|
|
|
607 |
</tbody>
|
|
|
608 |
</table>
|
|
|
609 |
<p> </p>
|
|
|
610 |
<p><a name="oci8" id="oci8"></a></p>
|
|
|
611 |
<table bgcolor="white" border="1">
|
|
|
612 |
<tbody>
|
|
|
613 |
<tr>
|
|
|
614 |
<td colspan="3">
|
|
|
615 |
<h3>oci8</h3>
|
|
|
616 |
</td>
|
|
|
617 |
</tr>
|
|
|
618 |
<tr>
|
|
|
619 |
<td><b>Parameter</b></td>
|
|
|
620 |
<td><b>Value</b></td>
|
|
|
621 |
<td><b>Description</b></td>
|
|
|
622 |
</tr>
|
|
|
623 |
<tr bgcolor="#f0f0f0">
|
|
|
624 |
<td colspan="3"><i>Ratios</i> </td>
|
|
|
625 |
</tr>
|
|
|
626 |
<tr>
|
|
|
627 |
<td>data cache hit ratio</td>
|
|
|
628 |
<td>96.98</td>
|
|
|
629 |
<td> </td>
|
|
|
630 |
</tr>
|
|
|
631 |
<tr>
|
|
|
632 |
<td>sql cache hit ratio</td>
|
|
|
633 |
<td>99.96</td>
|
|
|
634 |
<td> </td>
|
|
|
635 |
</tr>
|
|
|
636 |
<tr bgcolor="#f0f0f0">
|
|
|
637 |
<td colspan="3"><i>IO</i> </td>
|
|
|
638 |
</tr>
|
|
|
639 |
<tr>
|
|
|
640 |
<td>data reads</td>
|
|
|
641 |
<td>842938</td>
|
|
|
642 |
<td> </td>
|
|
|
643 |
</tr>
|
|
|
644 |
<tr>
|
|
|
645 |
<td>data writes</td>
|
|
|
646 |
<td>16852</td>
|
|
|
647 |
<td> </td>
|
|
|
648 |
</tr>
|
|
|
649 |
<tr bgcolor="#f0f0f0">
|
|
|
650 |
<td colspan="3"><i>Data Cache</i> </td>
|
|
|
651 |
</tr>
|
|
|
652 |
<tr>
|
|
|
653 |
<td>data cache buffers</td>
|
|
|
654 |
<td>3072</td>
|
|
|
655 |
<td>Number of cache buffers</td>
|
|
|
656 |
</tr>
|
|
|
657 |
<tr>
|
|
|
658 |
<td>data cache blocksize</td>
|
|
|
659 |
<td>8192</td>
|
|
|
660 |
<td> </td>
|
|
|
661 |
</tr>
|
|
|
662 |
<tr>
|
|
|
663 |
<td>data cache size</td>
|
|
|
664 |
<td>48M</td>
|
|
|
665 |
<td>shared_pool_size</td>
|
|
|
666 |
</tr>
|
|
|
667 |
<tr bgcolor="#f0f0f0">
|
|
|
668 |
<td colspan="3"><i>Memory Pools</i> </td>
|
|
|
669 |
</tr>
|
|
|
670 |
<tr>
|
|
|
671 |
<td>java pool size</td>
|
|
|
672 |
<td>0</td>
|
|
|
673 |
<td>java_pool_size</td>
|
|
|
674 |
</tr>
|
|
|
675 |
<tr>
|
|
|
676 |
<td>sort buffer size</td>
|
|
|
677 |
<td>512K</td>
|
|
|
678 |
<td>sort_area_size (per query)</td>
|
|
|
679 |
</tr>
|
|
|
680 |
<tr>
|
|
|
681 |
<td>user session buffer size</td>
|
|
|
682 |
<td>8M</td>
|
|
|
683 |
<td>large_pool_size</td>
|
|
|
684 |
</tr>
|
|
|
685 |
<tr bgcolor="#f0f0f0">
|
|
|
686 |
<td colspan="3"><i>Connections</i> </td>
|
|
|
687 |
</tr>
|
|
|
688 |
<tr>
|
|
|
689 |
<td>current connections</td>
|
|
|
690 |
<td>1</td>
|
|
|
691 |
<td> </td>
|
|
|
692 |
</tr>
|
|
|
693 |
<tr>
|
|
|
694 |
<td>max connections</td>
|
|
|
695 |
<td>170</td>
|
|
|
696 |
<td> </td>
|
|
|
697 |
</tr>
|
|
|
698 |
<tr>
|
|
|
699 |
<td>data cache utilization ratio</td>
|
|
|
700 |
<td>88.46</td>
|
|
|
701 |
<td>Percentage of data cache actually in use</td>
|
|
|
702 |
</tr>
|
|
|
703 |
<tr>
|
|
|
704 |
<td>user cache utilization ratio</td>
|
|
|
705 |
<td>91.76</td>
|
|
|
706 |
<td>Percentage of user cache (large_pool) actually in use</td>
|
|
|
707 |
</tr>
|
|
|
708 |
<tr>
|
|
|
709 |
<td>rollback segments</td>
|
|
|
710 |
<td>11</td>
|
|
|
711 |
<td> </td>
|
|
|
712 |
</tr>
|
|
|
713 |
<tr bgcolor="#f0f0f0">
|
|
|
714 |
<td colspan="3"><i>Transactions</i> </td>
|
|
|
715 |
</tr>
|
|
|
716 |
<tr>
|
|
|
717 |
<td>peak transactions</td>
|
|
|
718 |
<td>24</td>
|
|
|
719 |
<td>Taken from high-water-mark</td>
|
|
|
720 |
</tr>
|
|
|
721 |
<tr>
|
|
|
722 |
<td>max transactions</td>
|
|
|
723 |
<td>187</td>
|
|
|
724 |
<td>max transactions / rollback segments < 3.5 (or
|
|
|
725 |
transactions_per_rollback_segment)</td>
|
|
|
726 |
</tr>
|
|
|
727 |
<tr bgcolor="#f0f0f0">
|
|
|
728 |
<td colspan="3"><i>Parameters</i> </td>
|
|
|
729 |
</tr>
|
|
|
730 |
<tr>
|
|
|
731 |
<td>cursor sharing</td>
|
|
|
732 |
<td>EXACT</td>
|
|
|
733 |
<td>Cursor reuse strategy. Recommended is FORCE (8i+) or SIMILAR
|
|
|
734 |
(9i+). See <a
|
|
|
735 |
href="http://www.praetoriate.com/oracle_tips_cursor_sharing.htm">cursor_sharing</a>.</td>
|
|
|
736 |
</tr>
|
|
|
737 |
<tr>
|
|
|
738 |
<td>index cache cost</td>
|
|
|
739 |
<td>0</td>
|
|
|
740 |
<td>% of indexed data blocks expected in the cache. Recommended
|
|
|
741 |
is 20-80. Default is 0. See <a
|
|
|
742 |
href="http://www.dba-oracle.com/oracle_tips_cbo_part1.htm">optimizer_index_caching</a>.</td>
|
|
|
743 |
</tr>
|
|
|
744 |
<tr>
|
|
|
745 |
<td>random page cost</td>
|
|
|
746 |
<td>100</td>
|
|
|
747 |
<td>Recommended is 10-50 for TP, and 50 for data warehouses.
|
|
|
748 |
Default is 100. See <a
|
|
|
749 |
href="http://www.dba-oracle.com/oracle_tips_cost_adj.htm">optimizer_index_cost_adj</a>.
|
|
|
750 |
</td>
|
|
|
751 |
</tr>
|
|
|
752 |
</tbody>
|
|
|
753 |
</table>
|
|
|
754 |
<h3>Suspicious SQL</h3>
|
|
|
755 |
<table bgcolor="white" border="1">
|
|
|
756 |
<tbody>
|
|
|
757 |
<tr>
|
|
|
758 |
<td><b>LOAD</b></td>
|
|
|
759 |
<td><b>EXECUTES</b></td>
|
|
|
760 |
<td><b>SQL_TEXT</b></td>
|
|
|
761 |
</tr>
|
|
|
762 |
<tr>
|
|
|
763 |
<td align="right"> .73%</td>
|
|
|
764 |
<td align="right">89</td>
|
|
|
765 |
<td>select u.name, o.name, t.spare1, t.pctfree$ from sys.obj$ o,
|
|
|
766 |
sys.user$ u, sys.tab$ t where (bitand(t.trigflag, 1048576) = 1048576)
|
|
|
767 |
and o.obj#=t.obj# and o.owner# = u.user# select i.obj#, i.flags,
|
|
|
768 |
u.name, o.name from sys.obj$ o, sys.user$ u, sys.ind$ i where
|
|
|
769 |
(bitand(i.flags, 256) = 256 or bitand(i.flags, 512) = 512) and
|
|
|
770 |
(not((i.type# = 9) and bitand(i.flags,8) = 8)) and o.obj#=i.obj# and
|
|
|
771 |
o.owner# = u.user# </td>
|
|
|
772 |
</tr>
|
|
|
773 |
<tr>
|
|
|
774 |
<td align="right"> .84%</td>
|
|
|
775 |
<td align="right">3</td>
|
|
|
776 |
<td>select /*+ RULE */ distinct tabs.table_name, tabs.owner ,
|
|
|
777 |
partitioned, iot_type , TEMPORARY, table_type, table_type_owner from
|
|
|
778 |
DBA_ALL_TABLES tabs where tabs.owner = :own </td>
|
|
|
779 |
</tr>
|
|
|
780 |
<tr>
|
|
|
781 |
<td align="right"> 3.95%</td>
|
|
|
782 |
<td align="right">6</td>
|
|
|
783 |
<td>SELECT round(count(1)*avg(buf.block_size)/1048576) FROM
|
|
|
784 |
DBA_OBJECTS obj, V$BH bh, dba_segments seg, v$buffer_pool buf WHERE
|
|
|
785 |
obj.object_id = bh.objd AND obj.owner != 'SYS' and obj.owner =
|
|
|
786 |
seg.owner and obj.object_name = seg.segment_name and obj.object_type =
|
|
|
787 |
seg.segment_type and seg.buffer_pool = buf.name and buf.name =
|
|
|
788 |
'DEFAULT' </td>
|
|
|
789 |
</tr>
|
|
|
790 |
<tr>
|
|
|
791 |
<td align="right"> 4.50%</td>
|
|
|
792 |
<td align="right">6</td>
|
|
|
793 |
<td>SELECT round(count(1)*avg(tsp.block_size)/1048576) FROM
|
|
|
794 |
DBA_OBJECTS obj, V$BH bh, dba_segments seg, dba_tablespaces tsp WHERE
|
|
|
795 |
obj.object_id = bh.objd AND obj.owner != 'SYS' and obj.owner =
|
|
|
796 |
seg.owner and obj.object_name = seg.segment_name and obj.object_type =
|
|
|
797 |
seg.segment_type and seg.tablespace_name = tsp.tablespace_name </td>
|
|
|
798 |
</tr>
|
|
|
799 |
<tr>
|
|
|
800 |
<td align="right">57.34%</td>
|
|
|
801 |
<td align="right">9267</td>
|
|
|
802 |
<td>select t.schema, t.name, t.flags, q.name from
|
|
|
803 |
system.aq$_queue_tables t, sys.aq$_queue_table_affinities aft,
|
|
|
804 |
system.aq$_queues q where aft.table_objno = t.objno and
|
|
|
805 |
aft.owner_instance = :1 and q.table_objno = t.objno and q.usage = 0 and
|
|
|
806 |
bitand(t.flags, 4+16+32+64+128+256) = 0 for update of t.name,
|
|
|
807 |
aft.table_objno skip locked </td>
|
|
|
808 |
</tr>
|
|
|
809 |
</tbody>
|
|
|
810 |
</table>
|
|
|
811 |
<h3>Expensive SQL</h3>
|
|
|
812 |
<table bgcolor="white" border="1">
|
|
|
813 |
<tbody>
|
|
|
814 |
<tr>
|
|
|
815 |
<td><b>LOAD</b></td>
|
|
|
816 |
<td><b>EXECUTES</b></td>
|
|
|
817 |
<td><b>SQL_TEXT</b></td>
|
|
|
818 |
</tr>
|
|
|
819 |
<tr>
|
|
|
820 |
<td align="right"> 5.24%</td>
|
|
|
821 |
<td align="right">1</td>
|
|
|
822 |
<td>select round(sum(bytes)/1048576) from dba_segments </td>
|
|
|
823 |
</tr>
|
|
|
824 |
<tr>
|
|
|
825 |
<td align="right"> 6.89%</td>
|
|
|
826 |
<td align="right">6</td>
|
|
|
827 |
<td>SELECT round(count(1)*avg(buf.block_size)/1048576) FROM
|
|
|
828 |
DBA_OBJECTS obj, V$BH bh, dba_segments seg, v$buffer_pool buf WHERE
|
|
|
829 |
obj.object_id = bh.objd AND obj.owner != 'SYS' and obj.owner =
|
|
|
830 |
seg.owner and obj.object_name = seg.segment_name and obj.object_type =
|
|
|
831 |
seg.segment_type and seg.buffer_pool = buf.name and buf.name =
|
|
|
832 |
'DEFAULT' </td>
|
|
|
833 |
</tr>
|
|
|
834 |
<tr>
|
|
|
835 |
<td align="right"> 7.85%</td>
|
|
|
836 |
<td align="right">6</td>
|
|
|
837 |
<td>SELECT round(count(1)*avg(tsp.block_size)/1048576) FROM
|
|
|
838 |
DBA_OBJECTS obj, V$BH bh, dba_segments seg, dba_tablespaces tsp WHERE
|
|
|
839 |
obj.object_id = bh.objd AND obj.owner != 'SYS' and obj.owner =
|
|
|
840 |
seg.owner and obj.object_name = seg.segment_name and obj.object_type =
|
|
|
841 |
seg.segment_type and seg.tablespace_name = tsp.tablespace_name </td>
|
|
|
842 |
</tr>
|
|
|
843 |
<tr>
|
|
|
844 |
<td align="right">33.69%</td>
|
|
|
845 |
<td align="right">89</td>
|
|
|
846 |
<td>select u.name, o.name, t.spare1, t.pctfree$ from sys.obj$ o,
|
|
|
847 |
sys.user$ u, sys.tab$ t where (bitand(t.trigflag, 1048576) = 1048576)
|
|
|
848 |
and o.obj#=t.obj# and o.owner# = u.user# </td>
|
|
|
849 |
</tr>
|
|
|
850 |
<tr>
|
|
|
851 |
<td align="right">36.44%</td>
|
|
|
852 |
<td align="right">89</td>
|
|
|
853 |
<td>select i.obj#, i.flags, u.name, o.name from sys.obj$ o,
|
|
|
854 |
sys.user$ u, sys.ind$ i where (bitand(i.flags, 256) = 256 or
|
|
|
855 |
bitand(i.flags, 512) = 512) and (not((i.type# = 9) and
|
|
|
856 |
bitand(i.flags,8) = 8)) and o.obj#=i.obj# and o.owner# = u.user# </td>
|
|
|
857 |
</tr>
|
|
|
858 |
</tbody>
|
|
|
859 |
</table>
|
|
|
860 |
<p><a name="postgres" id="postgres"></a></p>
|
|
|
861 |
<table bgcolor="white" border="1">
|
|
|
862 |
<tbody>
|
|
|
863 |
<tr>
|
|
|
864 |
<td colspan="3">
|
|
|
865 |
<h3>postgres7</h3>
|
|
|
866 |
</td>
|
|
|
867 |
</tr>
|
|
|
868 |
<tr>
|
|
|
869 |
<td><b>Parameter</b></td>
|
|
|
870 |
<td><b>Value</b></td>
|
|
|
871 |
<td><b>Description</b></td>
|
|
|
872 |
</tr>
|
|
|
873 |
<tr bgcolor="#f0f0f0">
|
|
|
874 |
<td colspan="3"><i>Ratios</i> </td>
|
|
|
875 |
</tr>
|
|
|
876 |
<tr>
|
|
|
877 |
<td>statistics collector</td>
|
|
|
878 |
<td>FALSE</td>
|
|
|
879 |
<td>Must be set to TRUE to enable hit ratio statistics (<i>stats_start_collector</i>,<i>stats_row_level</i>
|
|
|
880 |
and <i>stats_block_level</i> must be set to true in postgresql.conf)</td>
|
|
|
881 |
</tr>
|
|
|
882 |
<tr>
|
|
|
883 |
<td>data cache hit ratio</td>
|
|
|
884 |
<td>99.9666031916603</td>
|
|
|
885 |
<td> </td>
|
|
|
886 |
</tr>
|
|
|
887 |
<tr bgcolor="#f0f0f0">
|
|
|
888 |
<td colspan="3"><i>IO</i> </td>
|
|
|
889 |
</tr>
|
|
|
890 |
<tr>
|
|
|
891 |
<td>data reads</td>
|
|
|
892 |
<td>15</td>
|
|
|
893 |
<td> </td>
|
|
|
894 |
</tr>
|
|
|
895 |
<tr>
|
|
|
896 |
<td>data writes</td>
|
|
|
897 |
<td>0.000000000000000000</td>
|
|
|
898 |
<td>Count of inserts/updates/deletes * coef</td>
|
|
|
899 |
</tr>
|
|
|
900 |
<tr bgcolor="#f0f0f0">
|
|
|
901 |
<td colspan="3"><i>Data Cache</i> </td>
|
|
|
902 |
</tr>
|
|
|
903 |
<tr>
|
|
|
904 |
<td>data cache buffers</td>
|
|
|
905 |
<td>1280</td>
|
|
|
906 |
<td>Number of cache buffers. <a
|
|
|
907 |
href="http://www.varlena.com/GeneralBits/Tidbits/perf.html#basic">Tuning</a></td>
|
|
|
908 |
</tr>
|
|
|
909 |
<tr>
|
|
|
910 |
<td>cache blocksize</td>
|
|
|
911 |
<td>8192</td>
|
|
|
912 |
<td>(estimate)</td>
|
|
|
913 |
</tr>
|
|
|
914 |
<tr>
|
|
|
915 |
<td>data cache size</td>
|
|
|
916 |
<td>10M</td>
|
|
|
917 |
<td> </td>
|
|
|
918 |
</tr>
|
|
|
919 |
<tr>
|
|
|
920 |
<td>operating system cache size</td>
|
|
|
921 |
<td>80000K</td>
|
|
|
922 |
<td>(effective cache size)</td>
|
|
|
923 |
</tr>
|
|
|
924 |
<tr bgcolor="#f0f0f0">
|
|
|
925 |
<td colspan="3"><i>Memory Pools</i> </td>
|
|
|
926 |
</tr>
|
|
|
927 |
<tr>
|
|
|
928 |
<td>sort buffer size</td>
|
|
|
929 |
<td>1M</td>
|
|
|
930 |
<td>Size of sort buffer (per query)</td>
|
|
|
931 |
</tr>
|
|
|
932 |
<tr bgcolor="#f0f0f0">
|
|
|
933 |
<td colspan="3"><i>Connections</i> </td>
|
|
|
934 |
</tr>
|
|
|
935 |
<tr>
|
|
|
936 |
<td>current connections</td>
|
|
|
937 |
<td>13</td>
|
|
|
938 |
<td> </td>
|
|
|
939 |
</tr>
|
|
|
940 |
<tr>
|
|
|
941 |
<td>max connections</td>
|
|
|
942 |
<td>32</td>
|
|
|
943 |
<td> </td>
|
|
|
944 |
</tr>
|
|
|
945 |
<tr bgcolor="#f0f0f0">
|
|
|
946 |
<td colspan="3"><i>Parameters</i> </td>
|
|
|
947 |
</tr>
|
|
|
948 |
<tr>
|
|
|
949 |
<td>rollback buffers</td>
|
|
|
950 |
<td>8</td>
|
|
|
951 |
<td>WAL buffers</td>
|
|
|
952 |
</tr>
|
|
|
953 |
<tr>
|
|
|
954 |
<td>random page cost</td>
|
|
|
955 |
<td>4</td>
|
|
|
956 |
<td>Cost of doing a seek (default=4). See <a
|
|
|
957 |
href="http://www.varlena.com/GeneralBits/Tidbits/perf.html#less">random_page_cost</a></td>
|
|
|
958 |
</tr>
|
|
|
959 |
</tbody>
|
|
|
960 |
</table>
|
|
|
961 |
</body>
|
|
|
962 |
</html>
|