mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-11-15 04:24:57 +01:00
484 lines
16 KiB
PHP
484 lines
16 KiB
PHP
<?php
|
|
/*
|
|
V4.50 6 July 2004 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
|
|
Released under both BSD license and Lesser GPL library license.
|
|
Whenever there is any discrepancy between the two licenses,
|
|
the BSD license will take precedence. See License.txt.
|
|
Set tabs to 4 for best viewing.
|
|
|
|
Latest version is available at http://adodb.sourceforge.net
|
|
|
|
Library for basic performance monitoring and tuning
|
|
|
|
*/
|
|
|
|
// security - hide paths
|
|
if (!defined('ADODB_DIR')) die();
|
|
|
|
class perf_oci8 extends ADODB_perf{
|
|
|
|
var $tablesSQL = "select segment_name as \"tablename\", sum(bytes)/1024 as \"size_in_k\",tablespace_name as \"tablespace\",count(*) \"extents\" from sys.user_extents
|
|
group by segment_name,tablespace_name";
|
|
|
|
var $version;
|
|
var $createTableSQL = "CREATE TABLE adodb_logsql (
|
|
created date NOT NULL,
|
|
sql0 varchar(250) NOT NULL,
|
|
sql1 varchar(4000) NOT NULL,
|
|
params varchar(4000),
|
|
tracer varchar(4000),
|
|
timer decimal(16,6) NOT NULL
|
|
)";
|
|
|
|
var $settings = array(
|
|
'Ratios',
|
|
'data cache hit ratio' => array('RATIOH',
|
|
"select round((1-(phy.value / (cur.value + con.value)))*100,2)
|
|
from v\$sysstat cur, v\$sysstat con, v\$sysstat phy
|
|
where cur.name = 'db block gets' and
|
|
con.name = 'consistent gets' and
|
|
phy.name = 'physical reads'",
|
|
'=WarnCacheRatio'),
|
|
|
|
'sql cache hit ratio' => array( 'RATIOH',
|
|
'select round(100*(sum(pins)-sum(reloads))/sum(pins),2) from v$librarycache',
|
|
'increase <i>shared_pool_size</i> if too ratio low'),
|
|
|
|
'datadict cache hit ratio' => array('RATIOH',
|
|
"select
|
|
round((1 - (sum(getmisses) / (sum(gets) +
|
|
sum(getmisses))))*100,2)
|
|
from v\$rowcache",
|
|
'increase <i>shared_pool_size</i> if too ratio low'),
|
|
|
|
'memory sort ratio' => array('RATIOH',
|
|
"SELECT ROUND((100 * b.VALUE) /DECODE ((a.VALUE + b.VALUE),
|
|
0,1,(a.VALUE + b.VALUE)),2)
|
|
FROM v\$sysstat a,
|
|
v\$sysstat b
|
|
WHERE a.name = 'sorts (disk)'
|
|
AND b.name = 'sorts (memory)'",
|
|
"% of memory sorts compared to disk sorts - should be over 95%"),
|
|
|
|
'IO',
|
|
'data reads' => array('IO',
|
|
"select value from v\$sysstat where name='physical reads'"),
|
|
|
|
'data writes' => array('IO',
|
|
"select value from v\$sysstat where name='physical writes'"),
|
|
|
|
'Data Cache',
|
|
'data cache buffers' => array( 'DATAC',
|
|
"select a.value/b.value from v\$parameter a, v\$parameter b
|
|
where a.name = 'db_cache_size' and b.name= 'db_block_size'",
|
|
'Number of cache buffers. Tune <i>db_cache_size</i> if the <i>data cache hit ratio</i> is too low.'),
|
|
'data cache blocksize' => array('DATAC',
|
|
"select value from v\$parameter where name='db_block_size'",
|
|
'' ),
|
|
'Memory Pools',
|
|
'data cache size' => array('DATAC',
|
|
"select value from v\$parameter where name = 'db_cache_size'",
|
|
'db_cache_size' ),
|
|
'shared pool size' => array('DATAC',
|
|
"select value from v\$parameter where name = 'shared_pool_size'",
|
|
'shared_pool_size, which holds shared sql, stored procedures, dict cache and similar shared structs' ),
|
|
'java pool size' => array('DATAJ',
|
|
"select value from v\$parameter where name = 'java_pool_size'",
|
|
'java_pool_size' ),
|
|
'large pool buffer size' => array('CACHE',
|
|
"select value from v\$parameter where name='large_pool_size'",
|
|
'this pool is for large mem allocations (not because it is larger than shared pool), for MTS sessions, parallel queries, io buffers (large_pool_size) ' ),
|
|
|
|
'pga buffer size' => array('CACHE',
|
|
"select value from v\$parameter where name='pga_aggregate_target'",
|
|
'program global area is private memory for sorting, and hash and bitmap merges - since oracle 9i (pga_aggregate_target)' ),
|
|
|
|
|
|
'Connections',
|
|
'current connections' => array('SESS',
|
|
'select count(*) from sys.v_$session where username is not null',
|
|
''),
|
|
'max connections' => array( 'SESS',
|
|
"select value from v\$parameter where name='sessions'",
|
|
''),
|
|
|
|
'Memory Utilization',
|
|
'data cache utilization ratio' => array('RATIOU',
|
|
"select round((1-bytes/sgasize)*100, 2)
|
|
from (select sum(bytes) sgasize from sys.v_\$sgastat) s, sys.v_\$sgastat f
|
|
where name = 'free memory' and pool = 'shared pool'",
|
|
'Percentage of data cache actually in use - should be over 85%'),
|
|
|
|
'shared pool utilization ratio' => array('RATIOU',
|
|
'select round((sga.bytes/p.value)*100,2)
|
|
from v$sgastat sga, v$parameter p
|
|
where sga.name = \'free memory\' and sga.pool = \'shared pool\'
|
|
and p.name = \'shared_pool_size\'',
|
|
'Percentage of shared pool actually used - too low is bad, too high is worse'),
|
|
|
|
'large pool utilization ratio' => array('RATIOU',
|
|
"select round((1-bytes/sgasize)*100, 2)
|
|
from (select sum(bytes) sgasize from sys.v_\$sgastat) s, sys.v_\$sgastat f
|
|
where name = 'free memory' and pool = 'large pool'",
|
|
'Percentage of large_pool actually in use - too low is bad, too high is worse'),
|
|
'sort buffer size' => array('CACHE',
|
|
"select value from v\$parameter where name='sort_area_size'",
|
|
'max in-mem sort_area_size (per query), uses memory in pga' ),
|
|
|
|
'pga usage at peak' => array('RATIOU',
|
|
'=PGA','Mb utilization at peak transactions (requires Oracle 9i+)'),
|
|
'Transactions',
|
|
'rollback segments' => array('ROLLBACK',
|
|
"select count(*) from sys.v_\$rollstat",
|
|
''),
|
|
|
|
'peak transactions' => array('ROLLBACK',
|
|
"select max_utilization tx_hwm
|
|
from sys.v_\$resource_limit
|
|
where resource_name = 'transactions'",
|
|
'Taken from high-water-mark'),
|
|
'max transactions' => array('ROLLBACK',
|
|
"select value from v\$parameter where name = 'transactions'",
|
|
'max transactions / rollback segments < 3.5 (or transactions_per_rollback_segment)'),
|
|
'Parameters',
|
|
'cursor sharing' => array('CURSOR',
|
|
"select value from v\$parameter where name = 'cursor_sharing'",
|
|
'Cursor reuse strategy. Recommended is FORCE (8i+) or SIMILAR (9i+). See <a href=http://www.praetoriate.com/oracle_tips_cursor_sharing.htm>cursor_sharing</a>.'),
|
|
/*
|
|
'cursor reuse' => array('CURSOR',
|
|
"select count(*) from (select sql_text_wo_constants, count(*)
|
|
from t1
|
|
group by sql_text_wo_constants
|
|
having count(*) > 100)",'These are sql statements that should be using bind variables'),*/
|
|
'index cache cost' => array('COST',
|
|
"select value from v\$parameter where name = 'optimizer_index_caching'",
|
|
'% of indexed data blocks expected in the cache.
|
|
Recommended is 20-80. Default is 0. See <a href=http://www.dba-oracle.com/oracle_tips_cbo_part1.htm>optimizer_index_caching</a>.'),
|
|
|
|
'random page cost' => array('COST',
|
|
"select value from v\$parameter where name = 'optimizer_index_cost_adj'",
|
|
'Recommended is 10-50 for TP, and 50 for data warehouses. Default is 100. See <a href=http://www.dba-oracle.com/oracle_tips_cost_adj.htm>optimizer_index_cost_adj</a>. '),
|
|
|
|
false
|
|
|
|
);
|
|
|
|
|
|
function perf_oci8(&$conn)
|
|
{
|
|
$savelog = $conn->LogSQL(false);
|
|
$this->version = $conn->ServerInfo();
|
|
$conn->LogSQL($savelog);
|
|
$this->conn =& $conn;
|
|
}
|
|
|
|
|
|
function PGA()
|
|
{
|
|
if ($this->version['version'] < 9) return 'Oracle 9i or later required';
|
|
|
|
$rs = $this->conn->Execute("select a.mb,a.targ as pga_size_pct,a.pct from
|
|
(select round(pga_target_for_estimate/1024.0/1024.0,0) Mb,
|
|
pga_target_factor targ,estd_pga_cache_hit_percentage pct,rownum as r
|
|
from v\$pga_target_advice) a left join
|
|
(select round(pga_target_for_estimate/1024.0/1024.0,0) Mb,
|
|
pga_target_factor targ,estd_pga_cache_hit_percentage pct,rownum as r
|
|
from v\$pga_target_advice) b on
|
|
a.r = b.r+1 where
|
|
b.pct < 100");
|
|
if (!$rs) return "Only in 9i or later";
|
|
$rs->Close();
|
|
if ($rs->EOF) return "PGA could be too big";
|
|
|
|
return reset($rs->fields);
|
|
}
|
|
|
|
function Explain($sql,$partial=false)
|
|
{
|
|
$savelog = $this->conn->LogSQL(false);
|
|
$rs =& $this->conn->SelectLimit("select ID FROM PLAN_TABLE");
|
|
if (!$rs) {
|
|
echo "<p><b>Missing PLAN_TABLE</b></p>
|
|
<pre>
|
|
CREATE TABLE PLAN_TABLE (
|
|
STATEMENT_ID VARCHAR2(30),
|
|
TIMESTAMP DATE,
|
|
REMARKS VARCHAR2(80),
|
|
OPERATION VARCHAR2(30),
|
|
OPTIONS VARCHAR2(30),
|
|
OBJECT_NODE VARCHAR2(128),
|
|
OBJECT_OWNER VARCHAR2(30),
|
|
OBJECT_NAME VARCHAR2(30),
|
|
OBJECT_INSTANCE NUMBER(38),
|
|
OBJECT_TYPE VARCHAR2(30),
|
|
OPTIMIZER VARCHAR2(255),
|
|
SEARCH_COLUMNS NUMBER,
|
|
ID NUMBER(38),
|
|
PARENT_ID NUMBER(38),
|
|
POSITION NUMBER(38),
|
|
COST NUMBER(38),
|
|
CARDINALITY NUMBER(38),
|
|
BYTES NUMBER(38),
|
|
OTHER_TAG VARCHAR2(255),
|
|
PARTITION_START VARCHAR2(255),
|
|
PARTITION_STOP VARCHAR2(255),
|
|
PARTITION_ID NUMBER(38),
|
|
OTHER LONG,
|
|
DISTRIBUTION VARCHAR2(30)
|
|
);
|
|
</pre>";
|
|
return false;
|
|
}
|
|
|
|
$rs->Close();
|
|
// $this->conn->debug=1;
|
|
|
|
if ($partial) {
|
|
$sqlq = $this->conn->qstr($sql.'%');
|
|
$arr = $this->conn->GetArray("select distinct distinct sql1 from adodb_logsql where sql1 like $sqlq");
|
|
if ($arr) {
|
|
foreach($arr as $row) {
|
|
$sql = reset($row);
|
|
if (crc32($sql) == $partial) break;
|
|
}
|
|
}
|
|
}
|
|
|
|
$s = "<p><b>Explain</b>: ".htmlspecialchars($sql)."</p>";
|
|
|
|
$this->conn->BeginTrans();
|
|
$id = "ADODB ".microtime();
|
|
$rs =& $this->conn->Execute("EXPLAIN PLAN SET STATEMENT_ID='$id' FOR $sql");
|
|
$m = $this->conn->ErrorMsg();
|
|
if ($m) {
|
|
$this->conn->RollbackTrans();
|
|
$this->conn->LogSQL($savelog);
|
|
$s .= "<p>$m</p>";
|
|
return $s;
|
|
}
|
|
$rs = $this->conn->Execute("
|
|
select
|
|
'<pre>'||lpad('--', (level-1)*2,'-') || trim(operation) || ' ' || trim(options)||'</pre>' as Operation,
|
|
object_name,COST,CARDINALITY,bytes
|
|
FROM plan_table
|
|
START WITH id = 0 and STATEMENT_ID='$id'
|
|
CONNECT BY prior id=parent_id and statement_id='$id'");
|
|
|
|
$s .= rs2html($rs,false,false,false,false);
|
|
$this->conn->RollbackTrans();
|
|
$this->conn->LogSQL($savelog);
|
|
$s .= $this->Tracer($sql,$partial);
|
|
return $s;
|
|
}
|
|
|
|
|
|
function CheckMemory()
|
|
{
|
|
if ($this->version['version'] < 9) return 'Oracle 9i or later required';
|
|
|
|
$rs =& $this->conn->Execute("
|
|
select a.size_for_estimate as cache_mb_estimate,
|
|
case when a.size_factor=1 then
|
|
'<<= current'
|
|
when a.estd_physical_read_factor-b.estd_physical_read_factor > 0 and a.estd_physical_read_factor<1 then
|
|
'- BETTER - '
|
|
else ' ' end as currsize,
|
|
a.estd_physical_read_factor-b.estd_physical_read_factor as best_when_0
|
|
from (select size_for_estimate,size_factor,estd_physical_read_factor,rownum r from v\$db_cache_advice) a ,
|
|
(select size_for_estimate,size_factor,estd_physical_read_factor,rownum r from v\$db_cache_advice) b where a.r = b.r-1");
|
|
if (!$rs) return false;
|
|
|
|
/*
|
|
The v$db_cache_advice utility show the marginal changes in physical data block reads for different sizes of db_cache_size
|
|
*/
|
|
$s = "<h3>Data Cache Estimate</h3>";
|
|
if ($rs->EOF) {
|
|
$s .= "<p>Cache that is 50% of current size is still too big</p>";
|
|
} else {
|
|
$s .= "Ideal size of Data Cache is when \"best_when_0\" changes from a positive number and becomes zero.";
|
|
$s .= rs2html($rs,false,false,false,false);
|
|
}
|
|
return $s;
|
|
}
|
|
|
|
/*
|
|
Generate html for suspicious/expensive sql
|
|
*/
|
|
function tohtml(&$rs,$type)
|
|
{
|
|
$o1 = $rs->FetchField(0);
|
|
$o2 = $rs->FetchField(1);
|
|
$o3 = $rs->FetchField(2);
|
|
if ($rs->EOF) return '<p>None found</p>';
|
|
$check = '';
|
|
$sql = '';
|
|
$s = "\n\n<table border=1 bgcolor=white><tr><td><b>".$o1->name.'</b></td><td><b>'.$o2->name.'</b></td><td><b>'.$o3->name.'</b></td></tr>';
|
|
while (!$rs->EOF) {
|
|
if ($check != $rs->fields[0].'::'.$rs->fields[1]) {
|
|
if ($check) {
|
|
$carr = explode('::',$check);
|
|
$prefix = "<a href=\"?$type=1&sql=".rawurlencode($sql).'&x#explain">';
|
|
$suffix = '</a>';
|
|
if (strlen($prefix)>2000) {
|
|
$prefix = '';
|
|
$suffix = '';
|
|
}
|
|
|
|
$s .= "\n<tr><td align=right>".$carr[0].'</td><td align=right>'.$carr[1].'</td><td>'.$prefix.$sql.$suffix.'</td></tr>';
|
|
}
|
|
$sql = $rs->fields[2];
|
|
$check = $rs->fields[0].'::'.$rs->fields[1];
|
|
} else
|
|
$sql .= $rs->fields[2];
|
|
|
|
$rs->MoveNext();
|
|
}
|
|
$rs->Close();
|
|
|
|
$carr = explode('::',$check);
|
|
$prefix = "<a target=".rand()." href=\"?&hidem=1&$type=1&sql=".rawurlencode($sql).'&x#explain">';
|
|
$suffix = '</a>';
|
|
if (strlen($prefix)>2000) {
|
|
$prefix = '';
|
|
$suffix = '';
|
|
}
|
|
$s .= "\n<tr><td align=right>".$carr[0].'</td><td align=right>'.$carr[1].'</td><td>'.$prefix.$sql.$suffix.'</td></tr>';
|
|
|
|
return $s."</table>\n\n";
|
|
}
|
|
|
|
// code thanks to Ixora.
|
|
// http://www.ixora.com.au/scripts/query_opt.htm
|
|
// requires oracle 8.1.7 or later
|
|
function SuspiciousSQL($numsql=10)
|
|
{
|
|
$sql = "
|
|
select
|
|
substr(to_char(s.pct, '99.00'), 2) || '%' load,
|
|
s.executions executes,
|
|
p.sql_text
|
|
from
|
|
(
|
|
select
|
|
address,
|
|
buffer_gets,
|
|
executions,
|
|
pct,
|
|
rank() over (order by buffer_gets desc) ranking
|
|
from
|
|
(
|
|
select
|
|
address,
|
|
buffer_gets,
|
|
executions,
|
|
100 * ratio_to_report(buffer_gets) over () pct
|
|
from
|
|
sys.v_\$sql
|
|
where
|
|
command_type != 47 and module != 'T.O.A.D.'
|
|
)
|
|
where
|
|
buffer_gets > 50 * executions
|
|
) s,
|
|
sys.v_\$sqltext p
|
|
where
|
|
s.ranking <= $numsql and
|
|
p.address = s.address
|
|
order by
|
|
1 desc, s.address, p.piece";
|
|
|
|
global $ADODB_CACHE_MODE,$HTTP_GET_VARS;
|
|
if (isset($HTTP_GET_VARS['expsixora']) && isset($HTTP_GET_VARS['sql'])) {
|
|
$partial = empty($HTTP_GET_VARS['part']);
|
|
echo "<a name=explain></a>".$this->Explain($HTTP_GET_VARS['sql'],$partial)."\n";
|
|
}
|
|
|
|
if (isset($HTTP_GET_VARS['sql'])) return $this->_SuspiciousSQL();
|
|
|
|
$save = $ADODB_CACHE_MODE;
|
|
$ADODB_CACHE_MODE = ADODB_FETCH_NUM;
|
|
$savelog = $this->conn->LogSQL(false);
|
|
$rs =& $this->conn->SelectLimit($sql);
|
|
$this->conn->LogSQL($savelog);
|
|
$ADODB_CACHE_MODE = $save;
|
|
if ($rs) {
|
|
$s = "\n<h3>Ixora Suspicious SQL</h3>";
|
|
$s .= $this->tohtml($rs,'expsixora');
|
|
} else
|
|
$s = '';
|
|
|
|
if ($s) $s .= '<p>';
|
|
$s .= $this->_SuspiciousSQL();
|
|
return $s;
|
|
}
|
|
|
|
// code thanks to Ixora.
|
|
// http://www.ixora.com.au/scripts/query_opt.htm
|
|
// requires oracle 8.1.7 or later
|
|
function ExpensiveSQL($numsql = 10)
|
|
{
|
|
$sql = "
|
|
select
|
|
substr(to_char(s.pct, '99.00'), 2) || '%' load,
|
|
s.executions executes,
|
|
p.sql_text
|
|
from
|
|
(
|
|
select
|
|
address,
|
|
disk_reads,
|
|
executions,
|
|
pct,
|
|
rank() over (order by disk_reads desc) ranking
|
|
from
|
|
(
|
|
select
|
|
address,
|
|
disk_reads,
|
|
executions,
|
|
100 * ratio_to_report(disk_reads) over () pct
|
|
from
|
|
sys.v_\$sql
|
|
where
|
|
command_type != 47 and module != 'T.O.A.D.'
|
|
)
|
|
where
|
|
disk_reads > 50 * executions
|
|
) s,
|
|
sys.v_\$sqltext p
|
|
where
|
|
s.ranking <= $numsql and
|
|
p.address = s.address
|
|
order by
|
|
1 desc, s.address, p.piece
|
|
";
|
|
global $ADODB_CACHE_MODE,$HTTP_GET_VARS;
|
|
if (isset($HTTP_GET_VARS['expeixora']) && isset($HTTP_GET_VARS['sql'])) {
|
|
$partial = empty($HTTP_GET_VARS['part']);
|
|
echo "<a name=explain></a>".$this->Explain($HTTP_GET_VARS['sql'],$partial)."\n";
|
|
}
|
|
|
|
if (isset($HTTP_GET_VARS['sql'])) {
|
|
$var =& $this->_ExpensiveSQL();
|
|
return $var;
|
|
}
|
|
$save = $ADODB_CACHE_MODE;
|
|
$ADODB_CACHE_MODE = ADODB_FETCH_NUM;
|
|
$savelog = $this->conn->LogSQL(false);
|
|
$rs =& $this->conn->Execute($sql);
|
|
$this->conn->LogSQL($savelog);
|
|
$ADODB_CACHE_MODE = $save;
|
|
if ($rs) {
|
|
$s = "\n<h3>Ixora Expensive SQL</h3>";
|
|
$s .= $this->tohtml($rs,'expeixora');
|
|
} else
|
|
$s = '';
|
|
|
|
|
|
if ($s) $s .= '<p>';
|
|
$s .= $this->_ExpensiveSQL();
|
|
return $s;
|
|
}
|
|
|
|
}
|
|
?>
|