Packaged Application TuningDavid KurtzGo-Faster Consultancy Ltd.

david.kurtz@go-faster.co.uk

www.go-faster.co.uk

Packaged Application Tuning

• Who am I?

• What is Tuning?

• What is a Packaged Application?

• What techniques could you use?

• Experimental Session– Are you, the membership, interested in discussing

Application specific issues?

Rules of Engagement

• If you can’t hear me - say so now!

• Feel free to ask on-topic questions during the presentation.

• This presentation (with notes) is available on the conference website (after the conference) and on – www.go-faster.co.uk

Who am I?

• DBA– Independent consultant– Performance tuning

• PeopleSoft

– UKOUG Unix SIG Chair

Aphorism

• Performance is exactly what the user perceives it to be. No more, no less.

• Poor performance is when the user’s perception does not match their expectation.

Aphorism

• Performance Tuning is a search for lost time.

Aphorism

• When you have eliminated the impossible, whatever remains, however improbable, must be the truth.

– A Study in Scarlet, Arthur Conan-Doyle

• It is a capital mistake to theorise before one has data.

The Memoirs of Sherlock Holmes, Arthur Conan-Doyle

Aphorism

• Detection is, or ought to be, an exact science. It should be be treated in the same cold and unemotional manner.– The Sign of Four, Arthur Conan-Doyle

What is a Packaged Application

• Bought in from a software vendor.

• You didn’t have any say in how it was developed.

• You cannot (easily) change the code.

• You may not even be able to see the code.

• It may be designed to run on other databases as well as Oracle.

What Packaged Applications are there?

• ERP– Oracle, SAP, PeopleSoft– Baan, J D Edwards ...

• CRM– and Siebel

• What others?

It isn’t always the database!

• Understand architecture– Web front end– Network– Application server– Database

• What can you measure?

PeopleSoft Internet Architecture

• PIA is 4-tier architecture– Each component can contribute to response

time– Need to measure each component

Java Servlet

(presentation logic)

Java Servlet

(presentation logic)

Tuxedo Application

Server

(application logic)

Tuxedo Application

Server

(application logic)

DBMS

(application data & meta-

data

DBMS

(application data & meta-

data

SQLTuxedo

Messagehttp / https

Sources of Metrics

• Browser– Proxy Server– 3rd Party software

• Local agent on PC

• Web Server– Access Log

Sources of Metrics (2)

• BEA/Tuxedo– Service Trace– TMADMIN

• Oracle Database– SQL_Trace– PSFT Application Server Trace

Sources of Metrics

Java Servlet

(presentation logic)

Java Servlet

(presentation logic)

Tuxedo Application

Server

(application logic)

Tuxedo Application

Server

(application logic)

DBMS

(application data & meta-data

DBMS

(application data & meta-data

SQLTuxedo

Messagehttp / https

Webserver Access Log

Proxy ServerAccess Log

Tuxedo ServiceTrace

Oracle SQL*Trace

Tuxedo tmadmin

script

Web/Proxy Access Log

• Standard format for access log– www.w3.org/pub/WWW/TR/logfile.html

– Apache is different

Web/Proxy Access Log

• Fields– Date, Time – Time Taken

• accurate to OS time units (1/100ths or 1/1000ths)

• only 1s on Apache

– Message bytes– IP addresses & DNS names– URI stem & Query

Apache Access Log

#httpd.confLogFormat "%{%Y.%m.%d %H:%M:%S}t|%T|%B|%u|%h|%{User-Agent}i|%>s|%m|%U|%q" monitoring

CustomLog logs/access.log monitoring

Sample Apache Access Log

2002.02.26 09:57:06|0|275|-|127.0.0.1|Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0; Q312461)|200|GET|/peoplesoft8/cache/PT_NEXTTAB_ENG_1.gif|

2002.02.26 09:57:17|0|31847|-|127.0.0.1|Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0; Q312461)|200|POST|/servlets/iclientservlet|?ICType=Panel&Menu=ADMINISTER_WORKFORCE_(GBL)&Market=GBL&PanelGroupName=JOB_DATA

2002.02.26 09:57:26|0|30959|-|127.0.0.1|Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 4.0; Q312461)|200|POST|/servlets/iclientservlet|?ICType=Panel&Menu=ADMINISTER_WORKFORCE_(GBL)&Market=GBL&PanelGroupName=JOB_DATA

What does the access log tell us?

• A date and time for every request

• Who made the request?

• How long did it take to serve?

• What was requested?– Which component (panel group)?

BEA/Tuxedo Service Trace

• Edit psappsrv.ubx file

• CLOPT=“-r -e APPQ.stderr…”– -r enables trace to stderr file– -e qualifies name of stderr file

Sample Tuxedo Service Trace

• Each service called to domain is loggedSERVICE PID SDATE STIME EDATE ETIME ------- --- ----- ----- ----- ----- @ICScript 390 1014717320 4586495 1014717322 4588397 @ICScript 390 1014717322 4588467 1014717322 4588537@ICScript 390 1014717322 4588557 1014717323 4589259@ICScript 390 1014717332 4598021 1014717332 4598171@ICScript 390 1014717355 4621745 1014717361 4627554@ICScript 390 1014717365 4631329 1014717366 4632511@ICScript 390 1014717375 4641944 1014717377 4643306@ICPanel 390 1014717380 4646761 1014717381 4647783@ICPanel 390 1014717388 4654202 1014717391 4657567@ICPanel 390 1014717396 4662614 1014717401 4667271

Tuxedo Service Trace

• Service - Name of Service

• Pid - An OS PID of listener or handler

• Sdate/Edate - Start/End Date

– Seconds since 00:00hrs GMT 1st January 1970.

• Stime/Etime– Start/End Time in OS time units (1/ 100ths or 1/1000ths)

– Hence calculate accurate service duration

– Time on Server - not queuing

BEA/Tuxedo TMADMIN Utility

• BEA Interactive command line interface

• Can be included in scripts– -r for read only in monitoring scripts

• pq (printqueue)

• psr (printserver)

• pclt (printclient)

PQ

• What queues in domain

• How many servers on queue

• How many requests queued– (How much work on queue)

Prog Name Queue Name # Serve Wk Queued # Queued Ave. Len Machine--------- ------------------- --------- -------- -------- -------JSL.exe 00095.00200 1 - 0 - GO-FASTER+JREPSVR.exe 00094.00250 1 - 0 - GO-FASTER+PSSAMSRV.exe SAMQ 1 - 0 - GO-FASTER+BBL.exe 54455 1 - 0 - GO-FASTER+WSL.exe 00001.00020 1 - 0 - GO-FASTER+PSAPPSRV.exe APPQ 1 - 0 - GO-FASTER+

PSR

• What servers exist?

• How many requests have they handled?

• What are they doing right now?

Prog Name Queue Name Grp Name ID RqDone Load Done Current Service--------- ---------- -------- -- ------ --------- ---------------BBL.exe 54455 GO-FAST+ 0 3 150 ( IDLE )PSAPPSRV.exe APPQ APPSRV 1 9 450 ICPanelPSSAMSRV.exe SAMQ APPSRV 100 0 0 ( IDLE )WSL.exe 00001.00020 BASE 20 0 0 ( IDLE )JSL.exe 00095.00200 JSLGRP 200 0 0 ( IDLE )JREPSVR.exe 00094.00250 JREPGRP 250 5 250 ( IDLE )

PCLT

• Who is connected?

• Are they doing something?

• When did they connect?

LMID User Name Client Name Time Status Bgn/Cmmt/Abrt--------------- --------------- --------------- -------- ------- -------------GO-FASTER-1 NT WSH 0:21:14 IDLE 0/0/0GO-FASTER-1 NT JSH 0:21:13 IDLE 0/0/0GO-FASTER-1 NT tmadmin 0:00:00 IDLE 0/0/0GO-FASTER-1 PS JavaClient 0:02:30 BUSY/W 0/0/0

Oracle SQL Trace

• Tuning tool • Session trace• Format it with TKPROF• Find long running SQL statements• Total SQL Time for sessioncall count cpu elapsed disk query current rows------- ------ -------- ---------- ---------- ---------- ---------- ----------Parse 72289 173.06 175.45 7 14654 94 0Execute 77140 64.02 67.37 205495 766343 170611 78630Fetch 50599 33.20 34.28 17302 971624 80146 143218------- ------ -------- ---------- ---------- ---------- ---------- ----------total 200028 270.28 277.10 222804 1752621 250851 221848

Small Application Servers

• Create small application with just a single handler process

• Enable trace on that process

• Trace sample transaction (only one user)

sys.dbms_system.set_sql_trace_in_session(<sid>,<serial>,TRUE);

Sources of Metrics

Java Servlet

(presentation logic)

Java Servlet

(presentation logic)

Tuxedo Application

Server

(application logic)

Tuxedo Application

Server

(application logic)

DBMS

(application data & meta-data

DBMS

(application data & meta-data

SQLTuxedo

Messagehttp / https

Webserver Access Log

Proxy ServerAccess Log

Tuxedo ServiceTrace

Oracle SQL*Trace

Tuxedo tmadmin

script

Graphical Analysis

• Don’t drown in numbers– Draw a picture

• Load Data into Database– SQL_Loader (Oracle 9i External Table)

• Process Data– Matching, Aggregation

• Oracle Analytic Function

• Load data into Excel– Draw Graph

Sample SQL*Loader File

LOAD DATAINFILE 'APPQ.stderr'REPLACEINTO TABLE txrpt WHEN (1) = '@'FIELDS TERMINATED BY WHITESPACETRAILING NULLCOLS(service "substr(:service,2)" -- remove leading @,pid,stimestamp ":stimestamp/

86400+2/24+TO_DATE('01011970','DDMMYYYY')",stime ":stime/100",queue ”’APPQ’",etime ":etime/100")

Tips about Graphs

• Connect Excel directly to a database

• Aggregate data carefully– Too little and excel draws it badly because it adds a black border

around an area

– Too much and you lose details

• Pivot tables are useful– but Excel97 buggy

• Scatters and Trendlines– joining dots can obscure data

– Excel supports 32000 points per series

Example: CPU Utilisation

Example: Apache Servlet Times

Longest http conversations

Example: Tuxedo Service Time

tmadmin - PCLT - Connect Client Sessions

tmadmin - PCLT - Busy/Wait Users

tmadmin - PQ - Queue Length

tmadmin - PSR - print server processes

Relating different metrics produces new information

Batch Performance

• Sources of Metrics

• Graph

Sources of Metrics

• Process Scheduler Request Table– every scheduled process recorded on this table– start and end time

• Application Traces

• SQL Trace

Graphical Analysis

Oracle SQL*Trace & TKPROF

• Enable SQL Trace on batch process• Process trace file with TKPROF

– report Top n statements– sort by

• Parse/Fetch/Execute • CPU/Elapsed Time

– statement timings/execution plan

call count cpu elapsed disk query current rows------- ------ -------- ---------- ---------- ---------- ---------- ----------Parse 36 0.02 0.01 0 0 0 0Execute 36 55.09 86.80 0 2973787 3 1Fetch 0 0.00 0.00 0 0 0 0------- ------ -------- ---------- ---------- ---------- ---------- ----------total 72 55.11 86.81 0 2973787 3 1

Triggers

• Process Scheduler Status Change

• On-Connect

• Enable Trace• Archiving data during

purge routines• Altering session

parameters

Process Scheduler

CREATE OR REPLACE trigger sysadm.set_trace

before update of runstatus on sysadm.psprcsrqst

for each row when (new.runstatus = 7 and old.runstatus != 7 and new.prcstype IN('Application Engine','COBOL SQL',

'SQR Process','SQR Report','SQR Report For WF Delivery'))

On-Connect Triggers

create or replace trigger sysadm.psqrysrv_session_trigger

after logon on sysadm.schemadeclare

l_program VARCHAR(64);begin

SELECT program INTO l_program FROM v$sessionWHERE sid IN(SELECT sid FROM v$mystat WHERE rownum = 1);IF substr(l_program,1,8) = 'PSQRYSRV' OR INSTR(UPPER(l_program),'PSNVS') > 0 THEN

sys.dbms_session.set_sql_trace(true);...

For example…

sys.dbms_session.set_sql_trace(true);ALTER SESSION SET EVENTS '10053 trace name

context forever, level 1’;ALTER SESSION SET EVENTS '10128 trace name

context forever, level 2’;ALTER SESSION SET optimizer_mode=FIRST_ROWS;ALTER SESSION SET optimizer_index_caching=100;ALTER SESSION SET optimizer_index_cost_adj=1;ALTER SESSION SET sort_area_size = 100000;sys.dbms_application_info.set_module('nVision','p

sqrysrv_session_trigger fired');

Aphorism

• The problems change from release to release, but the methods by which they are investigated remain the same.

– Jonathan Lewis (author of Practical Oracle 8i)

Questions?

Aphorism

• You know my methods, apply them.– A Study in Scarlet, Arthur Conan-Doyle

Packaged Application TuningDavid KurtzGo-Faster Consultancy Ltd.

david.kurtz@go-faster.co.uk

www.go-faster.co.uk