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| -rw-r--r-- | vendor/adodb/adodb-php/perf/perf-oci8.inc.php | 703 |
diff --git a/vendor/adodb/adodb-php/perf/perf-oci8.inc.php b/vendor/adodb/adodb-php/perf/perf-oci8.inc.php new file mode 100644 index 0000000..8830e6d --- /dev/null +++ b/vendor/adodb/adodb-php/perf/perf-oci8.inc.php @@ -0,0 +1,703 @@ +<?php +/* +@version v5.20.14 06-Jan-2019 +@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved. +@copyright (c) 2014 Damien Regad, Mark Newnham and the ADOdb community + 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.org/ + + Library for basic performance monitoring and tuning + +*/ + +// security - hide paths +if (!defined('ADODB_DIR')) die(); + + +class perf_oci8 extends ADODB_perf{ + + var $noShowIxora = 15; // if the sql for suspicious sql is taking too long, then disable ixora + + 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', + 'Mem Max Target (11g+)' => array( 'DATAC', + "select value from v\$parameter where name = 'memory_max_target'", + 'The memory_max_size is the maximum value to which memory_target can be set.' ), + 'Memory target (11g+)' => array( 'DATAC', + "select value from v\$parameter where name = 'memory_target'", + 'If memory_target is defined then SGA and PGA targets are consolidated into one memory_target.' ), + 'SGA Max Size' => array( 'DATAC', + "select nvl(value,0)/1024.0/1024 || 'M' from v\$parameter where name = 'sga_max_size'", + 'The sga_max_size is the maximum value to which sga_target can be set.' ), + 'SGA target' => array( 'DATAC', + "select nvl(value,0)/1024.0/1024 || 'M' from v\$parameter where name = 'sga_target'", + 'If sga_target is defined then data cache, shared, java and large pool size can be 0. This is because all these pools are consolidated into one sga_target.' ), + 'PGA aggr target' => array( 'DATAC', + "select nvl(value,0)/1024.0/1024 || 'M' from v\$parameter where name = 'pga_aggregate_target'", + 'If pga_aggregate_target is defined then this is the maximum memory that can be allocated for cursor operations such as sorts, group by, joins, merges. When in doubt, set it to 20% of sga_target.' ), + '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) ' ), + + 'dynamic memory usage' => array('CACHE', "select '-' from dual", '=DynMemoryUsage'), + + 'Connections', + 'current connections' => array('SESS', + 'select count(*) from sys.v_$session where username is not null', + ''), + 'max connections' => array( 'SESS', + "select value from v\$parameter where name='sessions'", + ''), + + 'Memory Utilization', + 'data cache utilization ratio' => array('RATIOU', + "select round((1-bytes/sgasize)*100, 2) + from (select sum(bytes) sgasize from sys.v_\$sgastat) s, sys.v_\$sgastat f + where name = 'free memory' and pool = 'shared pool'", + 'Percentage of data cache actually in use - should be over 85%'), + + 'shared pool utilization ratio' => array('RATIOU', + 'select round((sga.bytes/case when p.value=0 then sga.bytes else to_number(p.value) end)*100,2) + from v$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'", + '=WarnIndexCost'), + 'random page cost' => array('COST', + "select value from v\$parameter where name = 'optimizer_index_cost_adj'", + '=WarnPageCost'), + 'Waits', + 'Recent wait events' => array('WAITS','select \'Top 5 events\' from dual','=TopRecentWaits'), +// 'Historical wait SQL' => array('WAITS','select \'Last 2 days\' from dual','=TopHistoricalWaits'), -- requires AWR license + 'Backup', + 'Achivelog Mode' => array('BACKUP', 'select log_mode from v$database', '=LogMode'), + + 'DBID' => array('BACKUP','select dbid from v$database','Primary key of database, used for recovery with an RMAN Recovery Catalog'), + 'Archive Log Dest' => array('BACKUP', "SELECT NVL(v1.value,v2.value) +FROM v\$parameter v1, v\$parameter v2 WHERE v1.name='log_archive_dest' AND v2.name='log_archive_dest_10'", ''), + + 'Flashback Area' => array('BACKUP', "select nvl(value,'Flashback Area not used') from v\$parameter where name=lower('DB_RECOVERY_FILE_DEST')", 'Flashback area is a folder where all backup data and logs can be stored and managed by Oracle. If Error: message displayed, then it is not in use.'), + + 'Flashback Usage' => array('BACKUP', "select nvl('-','Flashback Area not used') from v\$parameter where name=lower('DB_RECOVERY_FILE_DEST')", '=FlashUsage', 'Flashback area usage.'), + + 'Control File Keep Time' => array('BACKUP', "select value from v\$parameter where name='control_file_record_keep_time'",'No of days to keep RMAN info in control file. Recommended set to x2 or x3 times the frequency of your full backup.'), + 'Recent RMAN Jobs' => array('BACKUP', "select '-' from dual", "=RMAN"), + + // 'Control File Keep Time' => array('BACKUP', "select value from v\$parameter where name='control_file_record_keep_time'",'No of days to keep RMAN info in control file. I recommend it be set to x2 or x3 times the frequency of your full backup.'), + 'Storage', 'Tablespaces' => array('TABLESPACE', "select '-' from dual", "=TableSpace"), + false + + ); + + + function __construct(&$conn) + { + global $gSQLBlockRows; + + $gSQLBlockRows = 1000; + $savelog = $conn->LogSQL(false); + $this->version = $conn->ServerInfo(); + $conn->LogSQL($savelog); + $this->conn = $conn; + } + + function LogMode() + { + $mode = $this->conn->GetOne("select log_mode from v\$database"); + + if ($mode == 'ARCHIVELOG') return 'To turn off archivelog:<br> + <pre><font size=-2> + SQLPLUS> connect sys as sysdba; + SQLPLUS> shutdown immediate; + + SQLPLUS> startup mount exclusive; + SQLPLUS> alter database noarchivelog; + SQLPLUS> alter database open; +</font></pre>'; + + return 'To turn on archivelog:<br> + <pre><font size=-2> + SQLPLUS> connect sys as sysdba; + SQLPLUS> shutdown immediate; + + SQLPLUS> startup mount exclusive; + SQLPLUS> alter database archivelog; + SQLPLUS> archive log start; + SQLPLUS> alter database open; +</font></pre>'; + } + + function TopRecentWaits() + { + + $rs = $this->conn->Execute("select * from ( + select event, round(100*time_waited/(select sum(time_waited) from v\$system_event where wait_class <> 'Idle'),1) \"% Wait\", + total_waits,time_waited, average_wait,wait_class from v\$system_event where wait_class <> 'Idle' order by 2 desc + ) where rownum <=5"); + + $ret = rs2html($rs,false,false,false,false); + return " <p>".$ret." </p>"; + + } + + function TopHistoricalWaits() + { + $days = 2; + + $rs = $this->conn->Execute("select * from ( SELECT + b.wait_class,B.NAME, + round(sum(wait_time+TIME_WAITED)/1000000) waitsecs, + parsing_schema_name, + C.SQL_TEXT, a.sql_id +FROM V\$ACTIVE_SESSION_HISTORY A + join V\$EVENT_NAME B on A.EVENT# = B.EVENT# + join V\$SQLAREA C on A.SQL_ID = C.SQL_ID +WHERE A.SAMPLE_TIME BETWEEN sysdate-$days and sysdate + and parsing_schema_name not in ('SYS','SYSMAN','DBSNMP','SYSTEM') +GROUP BY b.wait_class,parsing_schema_name,C.SQL_TEXT, B.NAME,A.sql_id +order by 3 desc) where rownum <=10"); + + $ret = rs2html($rs,false,false,false,false); + return " <p>".$ret." </p>"; + + } + + function TableSpace() + { + + $rs = $this->conn->Execute( + "select tablespace_name,round(sum(bytes)/1024/1024) as Used_MB,round(sum(maxbytes)/1024/1024) as Max_MB, round(sum(bytes)/sum(maxbytes),4) * 100 as PCT + from dba_data_files + group by tablespace_name order by 2 desc"); + + $ret = "<p><b>Tablespace</b>".rs2html($rs,false,false,false,false); + + $rs = $this->conn->Execute("select * from dba_data_files order by tablespace_name, 1"); + $ret .= "<p><b>Datafile</b>".rs2html($rs,false,false,false,false); + + return " <p>".$ret." </p>"; + } + + function RMAN() + { + $rs = $this->conn->Execute("select * from (select start_time, end_time, operation, status, mbytes_processed, output_device_type + from V\$RMAN_STATUS order by start_time desc) where rownum <=10"); + + $ret = rs2html($rs,false,false,false,false); + return " <p>".$ret." </p>"; + + } + + function DynMemoryUsage() + { + if (@$this->version['version'] >= 11) { + $rs = $this->conn->Execute("select component, current_size/1024./1024 as \"CurrSize (M)\" from V\$MEMORY_DYNAMIC_COMPONENTS"); + + } else + $rs = $this->conn->Execute("select name, round(bytes/1024./1024,2) as \"CurrSize (M)\" from V\$sgainfo"); + + + $ret = rs2html($rs,false,false,false,false); + return " <p>".$ret." </p>"; + } + + function FlashUsage() + { + $rs = $this->conn->Execute("select * from V\$FLASH_RECOVERY_AREA_USAGE"); + $ret = rs2html($rs,false,false,false,false); + return " <p>".$ret." </p>"; + } + + function WarnPageCost($val) + { + if ($val == 100 && $this->version['version'] < 10) $s = '<font color=red><b>Too High</b>. </font>'; + else $s = ''; + + return $s.'Recommended is 20-50 for TP, and 50 for data warehouses. Default is 100. See <a href=http://www.dba-oracle.com/oracle_tips_cost_adj.htm>optimizer_index_cost_adj</a>. '; + } + + function WarnIndexCost($val) + { + if ($val == 0 && $this->version['version'] < 10) $s = '<font color=red><b>Too Low</b>. </font>'; + else $s = ''; + + return $s.'Percentage of indexed data blocks expected in the cache. + Recommended is 20 (fast disk array) to 30 (slower hard disks). Default is 0. + See <a href=http://www.dba-oracle.com/oracle_tips_cbo_part1.htm>optimizer_index_caching</a>.'; + } + + function PGA() + { + + //if ($this->version['version'] < 9) return 'Oracle 9i or later required'; + } + + function PGA_Advice() + { + $t = "<h3>PGA Advice Estimate</h3>"; + if ($this->version['version'] < 9) return $t.'Oracle 9i or later required'; + + $rs = $this->conn->Execute('select a.MB, + case when a.targ = 1 then \'<<= Current \' + when a.targ < 1 or a.pct <= b.pct then null + else + \'- BETTER than Current by \'||round(a.pct/b.pct*100-100,2)||\'%\' end as "Percent Improved", + a.targ as "PGA Size Factor",a.pct "% Perf" + from + (select round(pga_target_for_estimate/1024.0/1024.0,0) MB, + pga_target_factor targ,estd_pga_cache_hit_percentage pct,rownum as r + from v$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 $t."Only in 9i or later"; + // $rs->Close(); + if ($rs->EOF) return $t."PGA could be too big"; + + return $t.rs2html($rs,false,false,true,false); + } + + 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 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 = $this->conn->Execute(" +select a.name Buffer_Pool, b.size_for_estimate as cache_mb_estimate, + case when b.size_factor=1 then + '<<= Current' + when a.estd_physical_read_factor-b.estd_physical_read_factor > 0.001 and b.estd_physical_read_factor<1 then + '- BETTER than current by ' || round((1-b.estd_physical_read_factor)/b.estd_physical_read_factor*100,2) || '%' + else ' ' end as RATING, + b.estd_physical_read_factor \"Phys. Reads Factor\", + round((a.estd_physical_read_factor-b.estd_physical_read_factor)/b.estd_physical_read_factor*100,2) as \"% Improve\" + from (select size_for_estimate,size_factor,estd_physical_read_factor,rownum r,name from v\$db_cache_advice order by name,1) a , + (select size_for_estimate,size_factor,estd_physical_read_factor,rownum r,name from v\$db_cache_advice order by name,1) b + where a.r = b.r-1 and a.name = b.name + "); + if (!$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 + */ + $s = "<h3>Data Cache Advice Estimate</h3>"; + if ($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 %BETTER gets close to zero."; + $s .= rs2html($rs,false,false,false,false); + } + return $s.$this->PGA_Advice(); + } + + /* + 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 .= $rs->fields[2]; + if (substr($sql,strlen($sql)-1) == "\0") $sql = substr($sql,0,strlen($sql)-1); + $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 $ADODB_CACHE_MODE; + if (isset($_GET['expsixora']) && isset($_GET['sql'])) { + $partial = empty($_GET['part']); + echo "<a name=explain></a>".$this->Explain($_GET['sql'],$partial)."\n"; + } + + if (isset($_GET['sql'])) return $this->_SuspiciousSQL($numsql); + + $s = ''; + $timer = time(); + $s .= $this->_SuspiciousSQL($numsql); + $timer = time() - $timer; + + if ($timer > $this->noShowIxora) return $s; + $s .= '<p>'; + + $save = $ADODB_CACHE_MODE; + $ADODB_CACHE_MODE = ADODB_FETCH_NUM; + if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); + + $savelog = $this->conn->LogSQL(false); + $rs = $this->conn->SelectLimit($sql); + $this->conn->LogSQL($savelog); + + if (isset($savem)) $this->conn->SetFetchMode($savem); + $ADODB_CACHE_MODE = $save; + if ($rs) { + $s .= "\n<h3>Ixora Suspicious SQL</h3>"; + $s .= $this->tohtml($rs,'expsixora'); + } + + 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 $ADODB_CACHE_MODE; + if (isset($_GET['expeixora']) && isset($_GET['sql'])) { + $partial = empty($_GET['part']); + echo "<a name=explain></a>".$this->Explain($_GET['sql'],$partial)."\n"; + } + if (isset($_GET['sql'])) { + $var = $this->_ExpensiveSQL($numsql); + return $var; + } + + $s = ''; + $timer = time(); + $s .= $this->_ExpensiveSQL($numsql); + $timer = time() - $timer; + if ($timer > $this->noShowIxora) return $s; + + $s .= '<p>'; + $save = $ADODB_CACHE_MODE; + $ADODB_CACHE_MODE = ADODB_FETCH_NUM; + if ($this->conn->fetchMode !== false) $savem = $this->conn->SetFetchMode(false); + + $savelog = $this->conn->LogSQL(false); + $rs = $this->conn->Execute($sql); + $this->conn->LogSQL($savelog); + + if (isset($savem)) $this->conn->SetFetchMode($savem); + $ADODB_CACHE_MODE = $save; + + if ($rs) { + $s .= "\n<h3>Ixora Expensive SQL</h3>"; + $s .= $this->tohtml($rs,'expeixora'); + } + + return $s; + } + + function clearsql() + { + $perf_table = adodb_perf::table(); + // using the naive "delete from $perf_table where created<".$this->conn->sysTimeStamp will cause the table to lock, possibly + // for a long time + $sql = +"DECLARE cnt pls_integer; +BEGIN + cnt := 0; + FOR rec IN (SELECT ROWID AS rr FROM $perf_table WHERE created<SYSDATE) + LOOP + cnt := cnt + 1; + DELETE FROM $perf_table WHERE ROWID=rec.rr; + IF cnt = 1000 THEN + COMMIT; + cnt := 0; + END IF; + END LOOP; + commit; +END;"; + + $ok = $this->conn->Execute($sql); + } + +} |