Performance Tunning and Optimization in Site Studio based sites.

Hi all,
I am hosting a site studio based site but performance test number are not encouragin. I have made sure not execute lots of service. I am using LoadRunner for performance evaluation.
Can some body please share with me the Performance strategy they are using, the general guidelines for performance improvement. It will help me a lot.
thanks in advance and regards,
swapnil

You could setup a cache server.. Id recommend looking into squid! :)
http://www.squid-cache.org/
Here is a guide to optimising UCM
http://download.oracle.com/docs/cd/E10316_01/cs/cs_doc_10/documentation/admin/performance_tuning_10en.pdf

Similar Messages

Performance analysis and optimization tools

Hello I am looking for some tools for Performance analysis and optimization for Oracle. For now I looked over Spotlight, Ignite and Embarcadero DB Optimizer. Can you please point out some links or something for comparing such tools?
What tools do you use?
Thanks,

For performance analysis you can use AWR and ASH.
-- How to analyze AWR/statpack
http://jonathanlewis.wordpress.com/statspack-examples/
-- how to take AWR and ASH report
http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/autostat.htm#PFGRF02601
http://www.oracle.com/technology/pub/articles/10gdba/week6_10gdba.html
Regards
Asif Kabir

EP Performance Tunning and concurrent user login problems

Hi all.
We have a EP , integrated with Windows AD and SAP R3.
In real situation, there will be 1000 users login in EP in 0.5 hours. And their operation time will be 6-8 hours, connect to R3 or other applications.
Is EP can support such concurrent user login scenario ?
if EP fails, is there some performance monitor tool or performance tunning issue ?

Hi
EP supports this logon load, however it all depends on sizing and architecture! Also the content of the STARTPAGE can be critical (make it "light").
If the portal fails, then often it is only one J2EE server process, which fails - so by having more server-processes will be an easy/minimum form of high availability. A "real" HA solution must be considered if your business will not work without the portal og SAPGUI connections can be used as workaround/fallback in such situations.
BR
Tom Bo

Orawsv performance tunning and debugging

Hi all ,
first I hope I've reached the right forum .
we've developed a .net <--> oracle application , which use oracle web services a lot , and it is great since it reduce our development time (no need to setup middle tier application server for webservice)
However , when trying to scale/stress the solution we've encountered serveral issues , which I would like to know if others has them as well:
1. it seems that the servlet is opening a db connection for every call , this seems a little expensive (I've not tested yet if it a logical connection using shared server of dedicate one -- anyone know ?? ) .
it there a way to tell the servlet to work with connection pool ? or keep the connections open ?
2. if i want to profile/debug/monitor the servlet ? where are the logfiles ?
it seems that the listener log is written for every call (which make sence ) but the it grows big
3. I want to know if anyone is using it on production with large scale (about 100 request per min ) ? or should i think on using web-service middle tier .?
thanks amihay .
we are using 11.2.0.1 on windows 2008 64 bit .

All HTTP activity, including WebServices is handled using Shared Server mode, since HTTP is a stateless protocol.
Make sure you have enought shared servers configured to handle the number of concurrent requests you expect to service.
The HTTP Server does not log. If you need logging you will need to wrap the procedures you want to call with one that logs..
100 Requests a min should not be a problem assuming you have sufficient horsepower on the box and sufficient shared servers configured. However it was never desinged or intended to scale to 1000's per second. For that you should be using a full mid-tier implementatin.

SCM Live cache performance tunning

I got a ne project here I have to work on SCM live cache, performance tunning and ECC Integrating ith SCM.
If you have any documents can you please help me.
- Thanks

7,
Try these
https://websmp103.sap-ag.de/~sapidb/011000358700000567062006E
https://websmp103.sap-ag.de/~sapidb/011000358700002213412003E
https://websmp103.sap-ag.de/~sapidb/011000358700000715082008E
https://websmp103.sap-ag.de/~sapidb/011000358700007382642002E
https://websmp103.sap-ag.de/~sapidb/011000358700008748092002E
Rgds,
DB49

Making button and a html site in visual studio community version

Hi,
I like to Making button and a html site in visual studio community version but i dont know how to put the right code in my c# form to perform a action to my new html site i made with visual studio.
So ik have a button and i added a html site with the "add" options to my form.I want the button to open onclick that site so i can make a html about some info of the button image (tool to use with metal)
Any one? Sorry i am very new at this and also from the netherlands but i want to coding in c# great to to learn..
Many thanks!
Arend

Hi Arend,
Thank you for posting in MSDN forum.
Since this forum is to discuss: Visual Studio WPF/SL Designer, Visual Studio Guidance
Automation Toolkit, Developer Documentation and Help System, and Visual Studio Editor. Based on your issue, I think that the issue is more related to the programming. So I’m afraid that it is not the correct forum for this issue.
To help you find the correct forum for this issue, could you please tell
me which kind of app you want to create? Is it winform app or others?
If you want to code for a winform app using c# language, I suggest you
can consult your question on specific
WinForm forum so that they can share you something for you to start.
Thanks for your understanding.
Best Regards,
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
Click
HERE to participate the survey.

How to Best Optimize Flash site for performance (not SEO)

I am a newbie to Flash design. I have build this site for my client www.888acolyte.com
I watched a bunch of YouTube Videos on how to stracture a site and then pulled together a lot of features from different learning resources.
I loved Flash for its animation capabilities and used a lot of time line tweening in my site layout. My background has a moving blurry colorful spots animation, my pages come out and assemble themselves as animations, transitions and rollover done as animations.
All of it done via Flash's time line tweening.
As the end result site is stattering in performance rather significantly. I am not sure if it is because of the animations I have employed or because of something else?
I used JPG instead of PNGs as they take a lesser size. I used an 80 quality in them out of Photoshop.
Every JPG is scaled to 75% of its actual size as I expect the site to be bigger on some bigger screens. I set it up to "Allow Full screen"
Flash Tab Settings:
In the export options :
JPG Quality = 80
No Sound
SWF Settings:
Checked "Compress Movie"
Checked "Include Hidden Layers"
Checked "Include XMP Metada"
UnChecked "Export SWC"
HTML Tab Settings:
Dimensions: 100%
Quality: High
I looked up some resources for "how to optimise a flash site" and seems that the best one around would be from 2009: http://www.netmagazine.com/tutorials/optimise-flash-movies
There is also this "magic button" "Save and Compact", which did not seem to have much effect on the final size of an .swf file.
I hope to receive a feedback on how to properly stracture and optimize a Flash site for the best performance.
If to go into details is too complicated perhaps someone can point me to a good learning resource on the topic?

If you're just needing a flash player, have you tried the JWPlayer from Longtail Video? That's what I'm using to view flash video on my site.
http://www.longtailvideo.com/players/jw-flv-player/

I've tried to update my i-Tunes version after the site suggested I should following my i-Pad being plugged into it for the first time. The update seemed successful but the program would not open at all despite switching off the PC and re-starting several

I’ve tried to update my i-Tunes version after the site suggested I should following my i-Pad Air being plugged into it for the first time. The update seemed successful but the program would not open at all despite switching off the PC and re-starting several times. I then tried wiping the original software from the computer and re-downloading from scratch. Each time I tried the download failed with a message saying “Service “Apple Mobile Device” failed to start. Verify that you have sufficient privileges to start system services” At this stage, the only way forward was to “abort” the download. This I have done now four times and the same thing happens. When I did finally manage to get an i-Tunes shortcut on my desktop, the program wouldn’t open saying: “i-Tunes was not installed correctly. Please re-install i-Tunes. Error 7 (Windows error 193)” Any ideas to resolve this?

Try the following user tip:
Troubleshooting issues with iTunes for Windows updates

Training classes for Administrator and Performance Tunning

Hi All,
I would like to learn more about ORACLE database so do you know any where offering the classes for Administrator and Performance Tunning in California Bay Area.
THanks,
JP

Oracle. :-)
http://education.oracle.com
Alison

New site about J2ME game programming and optimization

Hello!
I just wanted to tell you about a new J2ME development site
SupremeJ2ME found at
http://supremej2me.bambalam.se
It has a lot of useful guides and tips about mobile J2ME game development and optimization, a forum and information about the best J2ME tools.
Check it out!
cheers,
Cranky

J2ME Polish have licensing costs associated with it:
http://www.j2mepolish.org/licenses.html
As for Canvas VS GameCanvas:
GameCanvas is MIDP 2.0 and up, so depending which devices your app supports you might want to stick with Canvas. GameCanvas eases graphics flushing, but double buffering can be implemented on Canvas like so:
Image offscreen = isDoubleBuffered () ? null :
Image.createImage (getWidth (), getHeight ());See http://www.developer.com/java/j2me/article.php/10934_1561591_8
section: Avoiding Flickering

Free resources that ensure the health and optimization of your site/s.

I thought that I should share two resources that I found priceless.
1. To check whether your site doesn't have any malware or hackers. These folks will check and clean your site for you for free:
http://sitecheck.sucuri.net/scanner/
2. To check for optimization tips and places where you can shed some weight off your site visit.
http://gtmetrix.com/dashboard.html
Feel free to suggest anything else that you might know of.

Check spelling and grammar.
Validate CSS & HTML code.
To ensure menus, links and widgets all work, fully test your site in the 5 major browsers. If you must support older IE, get IE Tester.
http://www.my-debugbar.com/wiki/IETester/HomePage
Use Firefox's web developer toolbar.
https://addons.mozilla.org/en-US/firefox/addon/web-developer/
Web Page Analyzer & Optimization report
http://www.websiteoptimization.com/services/analyze/
Set-up Google WebMaster Tools and Google Analytics.
http://www.google.com/webmasters/
http://www.google.com/analytics/
Nancy O.
Alt-Web Design & Publishing
Web | Graphics | Print | Media Specialists
http://alt-web.com/
http://twitter.com/altweb

HT5622 I have changed my e mail address and whilst this has been changed in the Apple web site I do not know how to change it on my i Pod, I tunes and I Cloud.

I have changed my e mail adress and notified my Apple id but I do not know how to remove the old one and add the new one to my I Pod touch / I tunes and I Cloud.

Go to Settings>iTunes and App Stores and sign out and sign back
Same for:
- Settings>iCloud
- Settings>Game Center
- SettingsFaceTime
- Settings>Messages>Send and Receive

Oracle Performance tunning genral question

Hi,
Below is the list of Areas of Oracle db for which tunning activities are done. You are invited to comment to it weather this is complete list or need some addition or deletion. As I'm learning PT for Oracle now a days, therefore I want to expand my knowledge by sharing what I'm learning and what I need to learn.
So comment with Open hearts on it. Espically from experts and Gurus.
Here is the List
1-Planning for Performance, include Storage consideration( Weather it is SAN, NAS, DAS), Network planning and host OS planning with proper configuration for running Oracle.
2-Database desining (Not under-Normalized and not Over-Normalized with proper usage of Indexes, views and Stored Procedures)
3- Instance tunning (Memory structure + B.g Processes)
4- Session tunning.
5- Segment Space tunning.
6- SQL tunning.
This is what uptill what I've learned. If it needs addition kindly tell me what are these. Please also provide me links(good and precise one) for PT tutorials on web.Also note that I'm discussing this w.r.t Single instance non-rac db.
Looking for Good sugessions
Regards,
Abbasi

Hello,
This is the oracle course contents:
Contents
Preface
1 Introduction
Course Objectives 1-2
Organization 1-3
Agenda 1-4
What Is Not Included 1-6
Who Tunes? 1-7
What Does the DBA Tune? 1-8
How to Tune 1-10
Tuning Methodology 1-11
Effective Tuning Goals 1-13
General Tuning Session 1-15
Summary 1-17
2 Basic Tuning Tools
Objectives 2-2
Performance Tuning Diagnostics 2-3
Performance Tuning Tools 2-4
Tuning Objectives 2-5
Top Wait Events 2-6
DB Time 2-7
CPU and Wait Time Tuning Dimensions 2-8
Time Model: Overview 2-9
Time Model Statistics Hierarchy 2-10
Time Model Example 2-12
Dynamic Performance Views 2-13
Dynamic Performance Views: Usage Examples 2-14
Dynamic Performance Views: Considerations 2-15
Statistic Levels 2-16
Statistics and Wait Events 2-18
System Statistic Classes 2-19
Displaying Statistics 2-20
Displaying SGA Statistics 2-22
Wait Events 2-23
Using the V$EVENT_NAME View 2-24
Wait Classes 2-25
Displaying Wait Event Statistics 2-26
Oracle Internal & Oracle Academy Use Only
iv
Commonly Observed Wait Events 2-28
Using the V$SESSION_WAIT View 2-29
Precision of System Statistics 2-31
Using Features of the Packs 2-32
Accessing the Database Home Page 2-34
Enterprise Manager Performance Pages 2-35
Viewing the Alert Log 2-37
Using Alert Log Information as an Aid in Tuning 2-38
User Trace Files 2-40
Background Processes Trace Files 2-41
Summary 2-42
Practice 2 Overview: Using Basic Tools 2-43
3 Using Automatic Workload Repository
Objectives 3-2
Automatic Workload Repository: Overview 3-3
Automatic Workload Repository Data 3-4
Workload Repository 3-5
Database Control and AWR 3-6
AWR Snapshot Purging Policy 3-7
AWR Snapshot Settings 3-8
Manual AWR Snapshots 3-9
Managing Snapshots with PL/SQL 3-10
Generating AWR Reports in EM 3-11
Generating AWR Reports in SQL*Plus 3-12
Reading the AWR Report 3-13
Snapshots and Periods Comparisons 3-14
Compare Periods: Benefits 3-15
Compare Periods: Results 3-16
Compare Periods: Report 3-17
Compare Periods: Load Profile 3-18
Compare Periods: Top Events 3-19
Summary 3-20
Practice 3 Overview: Using AWR-Based Tools 3-21
4 Defining Problems
Objectives 4-2
Defining the Problem 4-3
Limit the Scope 4-4
Setting the Priority 4-5
Top Wait Events 4-6
Oracle Internal & Oracle Academy Use Only
v
Setting the Priority: Example 4-7
Top SQL Reports 4-8
Common Tuning Problems 4-9
Tuning Life Cycle Phases 4-11
Tuning During the Life Cycle 4-12
Application Design and Development 4-13
Testing: Database Configuration 4-14
Deployment 4-15
Production 4-16
Migration, Upgrade, and Environment Changes 4-17
ADDM Tuning Session 4-18
Performance Versus Business Requirements 4-19
Performance Tuning Resources 4-20
Filing a Performance Service Request 4-21
RDA Report 4-22
Monitoring and Tuning Tool: Overview 4-23
Summary 4-25
Practice 4 Overview: Identifying the Problem 4-26
5 Using Metrics and Alerts
Objectives 5-2
Metrics, Alerts, and Baselines 5-3
Limitation of Base Statistics 5-4
Typical Delta Tools 5-5
Oracle Database 11g Solution: Metrics 5-6
Benefits of Metrics 5-7
Viewing Metric History Information 5-8
Using EM to View Metric Details 5-9
Statistic Histograms 5-10
Histogram Views 5-11
Server-Generated Alerts 5-12
Database Control Usage Model 5-13
Setting Thresholds 5-14
Creating and Testing an Alert 5-15
Metric and Alert Views 5-16
View User-Defined SQL Metrics 5-17
Create User-Defined SQL Metrics 5-18
View User-Defined Host Metrics 5-19
Create User-Defined Host Metrics 5-20
Summary 5-21
Practice Overview 5: Working with Metrics 5-22
Oracle Internal & Oracle Academy Use Only
vi
6 Baselines
Objectives 6-2
Comparative Performance Analysis with AWR Baselines 6-3
Automatic Workload Repository Baselines 6-4
Moving Window Baseline 6-5
Baselines in Performance Page Settings 6-6
Baseline Templates 6-7
AWR Baselines 6-8
Creating AWR Baselines 6-9
Single AWR Baseline 6-10
Creating a Repeating Baseline Template 6-11
Managing Baselines with PL/SQL 6-12
Generating a Baseline Template for a Single Time Period 6-13
Creating a Repeating Baseline Template 6-14
Baseline Views 6-15
Performance Monitoring and Baselines 6-17
Defining Alert Thresholds Using a Static Baseline 6-19
Using EM to Quickly Configure Adaptive Thresholds 6-20
Changing Adaptive Threshold Settings 6-22
Summary 6-23
Practice 6: Overview Using AWR Baselines 6-24
7 Using AWR-Based Tools
Objectives 7-2
Automatic Maintenance Tasks 7-3
Maintenance Windows 7-4
Default Maintenance Plan 7-5
Automated Maintenance Task Priorities 7-6
Tuning Automatic Maintenance Tasks 7-7
ADDM Performance Monitoring 7-8
ADDM and Database Time 7-9
DBTime-Graph and ADDM Methodology 7-10
Top Performance Issues Detected 7-12
Database Control and ADDM Findings 7-13
ADDM Analysis Results 7-14
ADDM Recommendations 7-15
Database Control and ADDM Task 7-16
Changing ADDM Attributes 7-17
Retrieving ADDM Reports by Using SQL 7-18
Active Session History: Overview 7-19
Active Session History: Mechanics 7-20
Oracle Internal & Oracle Academy Use Only
vii
ASH Sampling: Example 7-21
Accessing ASH Data 7-22
Dump ASH to File 7-23
Analyzing the ASH Data 7-24
Generating ASH Reports 7-25
ASH Report Script 7-26
ASH Report: General Section 7-27
ASH Report Structure 7-28
ASH Report: Activity Over Time 7-29
Summary 7-30
Practice 7 Overview: Using AWR-Based Tools 7-31
8 Monitoring an Application
Objectives 8-2
What Is a Service? 8-3
Service Attributes 8-4
Service Types 8-5
Creating Services 8-6
Managing Services in a Single-Instance Environment 8-7
Everything Switches to Services 8-8
Using Services with Client Applications 8-9
Using Services with the Resource Manager 8-10
Services and Resource Manager with EM 8-11
Services and the Resource Manager: Example 8-12
Using Services with the Scheduler 8-13
Services and the Scheduler with EM 8-14
Services and the Scheduler: Example 8-16
Using Services with Parallel Operations 8-17
Using Services with Metric Thresholds 8-18
Changing Service Thresholds by Using EM 8-19
Services and Metric Thresholds: Example 8-20
Service Aggregation and Tracing 8-21
Top Services Performance Page 8-22
Service Aggregation Configuration 8-23
Service Aggregation: Example 8-24
Client Identifier Aggregation and Tracing 8-25
trcsess Utility 8-26
Service Performance Views 8-27
Summary 8-29
Practice 8 Overview: Using Services 8-30
Oracle Internal & Oracle Academy Use Only
viii
9 Identifying Problem SQL Statements
Objectives 9-2
SQL Statement Processing Phases 9-3
Parse Phase 9-4
SQL Storage 9-5
Cursor Usage and Parsing 9-6
SQL Statement Processing Phases: Bind 9-8
SQL Statement Processing Phases: Execute and Fetch 9-9
Processing a DML Statement 9-10
COMMIT Processing 9-12
Role of the Oracle Optimizer 9-13
Identifying Bad SQL 9-15
TOP SQL Reports 9-16
What Is an Execution Plan? 9-17
Methods for Viewing Execution Plans 9-18
Uses of Execution Plans 9-19
DBMS_XPLAN Package: Overview 9-20
EXPLAIN PLAN Command 9-22
EXPLAIN PLAN Command: Example 9-23
EXPLAIN PLAN Command: Output 9-24
Reading an Execution Plan 9-25
Using the V$SQL_PLAN View 9-26
V$SQL_PLAN Columns 9-27
Querying V$SQL_PLAN 9-28
V$SQL_PLAN_STATISTICS View 9-29
Querying the AWR 9-30
SQL*Plus AUTOTRACE 9-32
Using SQL*Plus AUTOTRACE 9-33
SQL*Plus AUTOTRACE: Statistics 9-34
SQL Trace Facility 9-35
How to Use the SQL Trace Facility 9-37
Initialization Parameters 9-38
Enabling SQL Trace 9-40
Disabling SQL Trace 9-41
Formatting Your Trace Files 9-42
TKPROF Command Options 9-43
Output of the TKPROF Command 9-45
TKPROF Output with No Index: Example 9-50
TKPROF Output with Index: Example 9-51
Generate an Optimizer Trace 9-52
Oracle Internal & Oracle Academy Use Only
ix
Summary 9-53
Practice Overview 9: Using Execution Plan Utilities 9-54
10 Influencing the Optimizer
Objectives 10-2
Functions of the Query Optimizer 10-3
Selectivity 10-5
Cardinality and Cost 10-6
Changing Optimizer Behavior 10-7
Using Hints 10-8
Optimizer Statistics 10-9
Extended Statistics 10-10
Controlling the Behavior of the Optimizer with Parameters 10-11
Enabling Query Optimizer Features 10-13
Influencing the Optimizer Approach 10-14
Optimizing SQL Statements 10-15
Access Paths 10-16
Choosing an Access Path 10-17
Full Table Scans 10-18
Row ID Scans 10-20
Index Operations 10-21
B*Tree Index Operations 10-22
Bitmap Indexes 10-23
Bitmap Index Access 10-24
Combining Bitmaps 10-25
Bitmap Operations 10-26
Join Operations 10-27
Join Methods 10-28
Nested Loop Joins 10-29
Hash Joins 10-31
Sort-Merge Joins 10-32
Join Performance 10-34
How the Query Optimizer Chooses Execution Plans for Joins 10-35
Sort Operations 10-37
Tuning Sort Performance 10-38
Reducing the Cost 10-39
Index Maintenance 10-40
Dropping Indexes 10-42
Creating Indexes 10-43
SQL Access Advisor 10-44
Table Maintenance for Performance 10-45
Oracle Internal & Oracle Academy Use Only
x
Table Reorganization Methods 10-46
Summary 10-47
Practice 10 Overview: Influencing the Optimizer 10-48
11 Using SQL Performance Analyzer
Objectives 11-2
Real Application Testing: Overview 11-3
Real Application Testing: Use Cases 11-4
SQL Performance Analyzer: Process 11-5
Capturing the SQL Workload 11-7
Creating a SQL Performance Analyzer Task 11-8
SQL Performance Analyzer: Tasks 11-9
Optimizer Upgrade Simulation 11-10
SQL Performance Analyzer Task Page 11-11
Comparison Report 11-12
Comparison Report SQL Detail 11-13
Tuning Regressing Statements 11-14
Preventing Regressions 11-16
Parameter Change Analysis 11-17
Guided Workflow Analysis 11-18
SQL Performance Analyzer: PL/SQL Example 11-19
SQL Performance Analyzer: Data Dictionary Views 11-21
Summary 11-22
Practice 11: Overview 11-23
12 SQL Performance Management
Objectives 12-2
Maintaining SQL Performance 12-3
Maintaining Optimizer Statistics 12-4
Automated Maintenance Tasks 12-5
Statistic Gathering Options 12-6
Setting Statistic Preferences 12-7
Restore Statistics 12-9
Deferred Statistics Publishing: Overview 12-10
Deferred Statistics Publishing: Example 12-12
Automatic SQL Tuning: Overview 12-13
SQL Statement Profiling 12-14
Plan Tuning Flow and SQL Profile Creation 12-15
SQL Tuning Loop 12-16
Using SQL Profiles 12-17
SQL Tuning Advisor: Overview 12-18
Oracle Internal & Oracle Academy Use Only
xi
Using the SQL Tuning Advisor 12-19
SQL Tuning Advisor Options 12-20
SQL Tuning Advisor Recommendations 12-21
Using the SQL Tuning Advisor: Example 12-22
Using the SQL Access Advisor 12-23
View Recommendations 12-25
View Recommendation Details 12-26
SQL Plan Management: Overview 12-27
SQL Plan Baseline: Architecture 12-28
Loading SQL Plan Baselines 12-30
Evolving SQL Plan Baselines 12-31
Important Baseline SQL Plan Attributes 12-32
SQL Plan Selection 12-34
Possible SQL Plan Manageability Scenarios 12-36
SQL Performance Analyzer and SQL Plan Baseline Scenario 12-37
Loading a SQL Plan Baseline Automatically 12-38
Purging SQL Management Base Policy 12-39
Enterprise Manager and SQL Plan Baselines 12-40
Summary 12-41
Practice 12: Overview Using SQL Plan Management 12-42
13 Using Database Replay
Objectives 13-2
Using Database Replay 13-3
The Big Picture 13-4
System Architecture: Capture 13-5
System Architecture: Processing the Workload 13-7
System Architecture: Replay 13-8
Capture Considerations 13-9
Replay Considerations: Preparation 13-10
Replay Considerations 13-11
Replay Options 13-12
Replay Analysis 13-13
Database Replay Workflow in Enterprise Manager 13-15
Capturing Workload with Enterprise Manager 13-16
Capture Wizard: Plan Environment 13-17
Capture Wizard: Options 13-18
Capture Wizard: Parameters 13-19
Viewing Capture Progress 13-20
Viewing Capture Report 13-21
Export Capture AWR Data 13-22
Oracle Internal & Oracle Academy Use Only
xii
Viewing Workload Capture History 13-23
Processing Captured Workload 13-24
Using the Preprocess Captured Workload Wizard 13-25
Using the Replay Workload Wizard 13-26
Replay Workload: Prerequisites 13-27
Replay Workload: Choose Initial Options 13-28
Replay Workload: Customize Options 13-29
Replay Workload: Prepare Replay Clients 13-30
Replay Workload: Client Connections 13-31
Replay Workload: Replay Started 13-32
Viewing Workload Replay Progress 13-33
Viewing Workload Replay Statistics 13-34
Packages and Procedures 13-36
Data Dictionary Views: Database Replay 13-37
Database Replay: PL/SQL Example 13-38
Calibrating Replay Clients 13-40
Summary 13-41
Practice 13: Overview 13-42
14 Tuning the Shared Pool
Objectives 14-2
Shared Pool Architecture 14-3
Shared Pool Operation 14-4
The Library Cache 14-5
Latch and Mutex 14-7
Latch and Mutex: Views and Statistics 14-9
Diagnostic Tools for Tuning the Shared Pool 14-11
AWR/Statspack Indicators 14-13
Load Profile 14-14
Instance Efficiencies 14-15
Top Waits 14-16
Time Model 14-17
Library Cache Activity 14-19
Avoid Hard Parses 14-20
Are Cursors Being Shared? 14-21
Sharing Cursors 14-23
Adaptive Cursor Sharing: Example 14-25
Adaptive Cursor Sharing Views 14-27
Interacting with Adaptive Cursor Sharing 14-28
Avoiding Soft Parses 14-29
Sizing the Shared Pool 14-30
Oracle Internal & Oracle Academy Use Only
xiii
Shared Pool Advisory 14-31
Shared Pool Advisor 14-33
Avoiding Fragmentation 14-34
Large Memory Requirements 14-35
Tuning the Shared Pool Reserved Space 14-37
Keeping Large Objects 14-39
Data Dictionary Cache 14-41
Dictionary Cache Misses 14-42
SQL Query Result Cache: Overview 14-43
Managing the SQL Query Result Cache 14-44
Using the RESULT_CACHE Hint 14-46
Using the DBMS_RESULT_CACHE Package 14-47
Viewing SQL Result Cache Dictionary Information 14-48
SQL Query Result Cache: Considerations 14-49
UGA and Oracle Shared Server 14-50
Large Pool 14-51
Tuning the Large Pool 14-52
Summary 14-53
Practice Overview 14: Tuning the Shared Pool 14-54
15 Tuning the Buffer Cache
Objectives 15-2
Oracle Database Architecture 15-3
Buffer Cache: Highlights 15-4
Database Buffers 15-5
Buffer Hash Table for Lookups 15-6
Working Sets 15-7
Tuning Goals and Techniques 15-9
Symptoms 15-11
Cache Buffer Chains Latch Contention 15-12
Finding Hot Segments 15-13
Buffer Busy Waits 15-14
Calculating the Buffer Cache Hit Ratio 15-15
Buffer Cache Hit Ratio Is Not Everything 15-16
Interpreting Buffer Cache Hit Ratio 15-17
Read Waits 15-19
Free Buffer Waits 15-21
Solutions 15-22
Sizing the Buffer Cache 15-23
Buffer Cache Size Parameters 15-24
Dynamic Buffer Cache Advisory Parameter 15-25
Oracle Internal & Oracle Academy Use Only
xiv
Buffer Cache Advisory View 15-26
Using the V$DB_CACHE_ADVICE View 15-27
Using the Buffer Cache Advisory with EM 15-28
Caching Tables 15-29
Multiple Buffer Pools 15-30
Enabling Multiple Buffer Pools 15-32
Calculating the Hit Ratio for Multiple Pools 15-33
Multiple Block Sizes 15-35
Multiple Database Writers 15-36
Multiple I/O Slaves 15-37
Use Multiple Writers or I/O Slaves 15-38
Private Pool for I/O Intensive Operations 15-39
Automatically Tuned Multiblock Reads 15-40
Flushing the Buffer Cache (for Testing Only) 15-41
Summary 15-42
Practice 15: Overview Tuning the Buffer Cache 15-43
16 Tuning PGA and Temporary Space
Objectives 16-2
SQL Memory Usage 16-3
Performance Impact 16-4
Automatic PGA Memory 16-5
SQL Memory Manager 16-6
Configuring Automatic PGA Memory 16-8
Setting PGA_AGGREGATE_TARGET Initially 16-9
Monitoring SQL Memory Usage 16-10
Monitoring SQL Memory Usage: Examples 16-12
Tuning SQL Memory Usage 16-13
PGA Target Advice Statistics 16-14
PGA Target Advice Histograms 16-15
Automatic PGA and Enterprise Manager 16-16
Automatic PGA and AWR Reports 16-17
Temporary Tablespace Management: Overview 16-18
Temporary Tablespace: Best Practice 16-19
Configuring Temporary Tablespace 16-20
Temporary Tablespace Group: Overview 16-22
Temporary Tablespace Group: Benefits 16-23
Creating Temporary Tablespace Groups 16-24
Maintaining Temporary Tablespace Groups 16-25
View Tablespace Groups 16-26
Monitoring Temporary Tablespace 16-27
Oracle Internal & Oracle Academy Use Only
xv
Temporary Tablespace Shrink 16-28
Tablespace Option for Creating Temporary Table 16-29
Summary 16-30
Practice Overview 16: Tuning PGA Memory 16-31
17 Automatic Memory Management
Objectives 17-2
Oracle Database Architecture 17-3
Dynamic SGA 17-4
Granule 17-5
Memory Advisories 17-6
Manually Adding Granules to Components 17-7
Increasing the Size of an SGA Component 17-8
Automatic Shared Memory Management: Overview 17-9
SGA Sizing Parameters: Overview 17-10
Dynamic SGA Transfer Modes 17-11
Memory Broker Architecture 17-12
Manually Resizing Dynamic SGA Parameters 17-13
Behavior of Auto-Tuned SGA Parameters 17-14
Behavior of Manually Tuned SGA Parameters 17-15
Using the V$PARAMETER View 17-16
Resizing SGA_TARGET 17-17
Disabling Automatic Shared Memory Management 17-18
Configuring ASMM 17-19
SGA Advisor 17-20
Monitoring ASMM 17-21
Automatic Memory Management: Overview 17-22
Oracle Database Memory Parameters 17-24
Automatic Memory Parameter Dependency 17-25
Enabling Automatic Memory Management 17-26
Monitoring Automatic Memory Management 17-27
DBCA and Automatic Memory Management 17-29
Summary 17-30
Practice 17: Overview Using Automatic Memory Tuning 17-31
Oracle Internal & Oracle Academy Use Only
xvi
18 Tuning Segment Space Usage
Objectives 18-2
Space Management 18-3
Extent Management 18-4
Locally Managed Extents 18-5
Large Extents: Considerations 18-6
How Table Data Is Stored 18-8
Anatomy of a Database Block 18-9
Minimize Block Visits 18-10
The DB_BLOCK_SIZE Parameter 18-11
Small Block Size: Considerations 18-12
Large Block Size: Considerations 18-13
Block Allocation 18-14
Free Lists 18-15
Block Space Management 18-16
Block Space Management with Free Lists 18-17
Automatic Segment Space Management 18-19
Automatic Segment Space Management at Work 18-20
Block Space Management with ASSM 18-22
Creating an Automatic Segment Space Management Segment 18-23
Migration and Chaining 18-24
Guidelines for PCTFREE and PCTUSED 18-26
Detecting Migration and Chaining 18-27
Selecting Migrated Rows 18-28
Eliminating Migrated Rows 18-29
Shrinking Segments: Overview 18-31
Shrinking Segments: Considerations 18-32
Shrinking Segments by Using SQL 18-33
Segment Shrink: Basic Execution 18-34
Segment Shrink: Execution Considerations 18-35
Using EM to Shrink Segments 18-36
Table Compression: Overview 18-37
Table Compression Concepts 18-38
Using Table Compression 18-39
Summary 18-40
19 Tuning I/O
Objectives 19-2
I/O Architecture 19-3
File System Characteristics 19-4
I/O Modes 19-5
Oracle Internal & Oracle Academy Use Only
xvii
Direct I/O 19-6
Bandwidth Versus Size 19-7
Important I/O Metrics for Oracle Databases 19-8
I/O Calibration and Enterprise Manager 19-10
I/O Calibration and the PL/SQL Interface 19-11
I/O Statistics: Overview 19-13
I/O Statistics and Enterprise Manager 19-14
Stripe and Mirror Everything 19-16
Using RAID 19-17
RAID Cost Versus Benefits 19-18
Should I Use RAID 1 or RAID 5? 19-20
Diagnostics 19-21
Database I/O Tuning 19-22
What Is Automatic Storage Management? 19-23
Tuning ASM 19-24
How Many Disk Groups per Database 19-25
Which RAID Configuration for Best Availability? 19-26
ASM Mirroring Guidelines 19-27
ASM Striping Granularity 19-28
What Type of Striping Works Best? 19-29
ASM Striping Only 19-30
Hardware RAID Striped LUNs 19-31
ASM Guidelines 19-32
ASM Instance Initialization Parameters 19-33
Dynamic Performance Views 19-34
Monitoring Long-Running Operations by Using V$ASM_OPERATION 19-36
ASM Instance Performance Diagnostics 19-37
ASM Performance Page 19-38
Database Instance Parameter Changes 19-39
ASM Scalability 19-40
Summary 19-41
20 Performance Tuning Summary
Objectives 20-2
Necessary Initialization Parameters with Little Performance Impact 20-3
Important Initialization Parameters with Performance Impact 20-4
Sizing Memory Initially 20-6
Database High Availability: Best Practices 20-7
Undo Tablespace: Best Practices 20-8
Temporary Tablespace: Best Practices 20-9
General Tablespace: Best Practices 20-11
Internal Fragmentation Considerations 20-12
Oracle Internal & Oracle Academy Use Only
xviii
Block Size: Advantages and Disadvantages 20-13
Automatic Checkpoint Tuning 20-14
Sizing the Redo Log Buffer 20-15
Sizing Redo Log Files 20-16
Increasing the Performance of Archiving 20-17
Automatic Statistics Gathering 20-19
Automatic Statistics Collection: Considerations 20-20
Commonly Observed Wait Events 20-21
Additional Statistics 20-22
Top 10 Mistakes Found in Customer Systems 20-23
Summary 20-25
Appendix A: Practices and Solutions
Appendix B: Using Statspack
Index

Unable to Sync i-Tunes and Apple TV

Hello. I am writing about my inability to sync i-Tunes and Apple TV. I have read a variety of posts in this forum regarding other users' problems with the same issue and have been unable to solve my own based on recommendations, including exchanging my Apple TV for a new one at my local Apple store, which I did.
My Apple TV is linked to my computer through a Linksys wireless router. The Apple TV is able to connect to the internet as demonstrated by its ability to download movie trailers, access YouTube, and get its software updated. It appears in my i-Tunes (version 7.5.0.20) devices list, but each time I click on sync, nothing happens. I get an error message about opening port 3689 because but that port is not blocked. I've shut down my TrendMicro "PC Cillin" firewall and the same message comes up.
So in sum, the Apple TV can link out to the internet but not back to my i-Tunes. Both are running latest software versions. Here's the best part, before I moved a few months ago to my current home, both worked and communicated fine! After I moved and hooked everything back up the way it was, Apple TV didn't work the same (i.e., did not sync with i-Tunes). Thinking it was a problem with Apple TV, I exchanged it for a new one recently. But the new one has the same problem, so it's not the Apple TV unit.
Any help would be much appreciated.
Thanks,
Ronin703
Following are i-Tunes diagnostics notes (everything works fine):
Microsoft Windows XP Professional Service Pack 2 (Build 2600)
IBM 288692U
iTunes 7.5.0.20
CD Driver 2.0.6.1
CD Driver DLL 2.0.6.2
Current user is an administrator.
The current local date and time is 2007-12-08 20:36:02.
Video Display Information:
NVIDIA GeForce FX Go5200
** Network Connectivity Tests **
Network Adapter Information
Adapter Name: {D37BCF82-D40B-4D6C-B3F5-CA69BFEB857E}
Description: 11b/g Wireless LAN Mini PCI Adapter - Packet Scheduler Miniport
IP Address: 192.168.15.101
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.15.1
DHCP Enabled: Yes
DHCP Server: 192.168.15.1
Lease Obtained: Sat Dec 08 11:50:16 2007
Lease Expires: Sun Dec 09 11:50:16 2007
DNS Servers: 192.168.15.1
192.168.15.1
Adapter Name: {0F331AA6-8F06-4491-BE96-BD3DE6F99C04}
Description: Broadcom NetXtreme Gigabit Ethernet - Packet Scheduler Miniport
IP Address: 0.0.0.0
Subnet Mask: 0.0.0.0
Default Gateway:
DHCP Enabled: Yes
DHCP Server: 10.42.2.1
Lease Obtained: Fri Sep 07 10:37:17 2007
Lease Expires: Sat Sep 08 10:37:17 2007
DNS Servers:
Active Connection: LAN Connection
Connected: Yes
Online: Yes
Using Modem: No
Using LAN: Yes
Using Proxy: No
SSL 3.0 Support: Enabled
TLS 1.0 Support: Enabled
Firewall Information
Connection attempt to Apple web site was successful.
Connection attempt to iTunes Store was successful.
Secure connection attempt to iTunes Store was successful.
Secure connection attempt to iPhone activation server was successful.

I had the same problem. I doubt it is the firewall software on your cpu but rather then one on the router itself. On your linksys control panel, go to applications and on the port list enter 3689 to 3689, enter the ip address for your appletv (you can get it from the apple tv or from the DHCP client list under the status tab on the router). Click enable then update. Or, you can simply disable the firewall on the security tab of the router but I would not recommend this. Even after updating, I had to unplug the apple tv to reboot it and then it worked fine.

Performance issue and indexing doesn't help

I created a view the SQL is basically simple but I need to group data based on a value returned from a function. I think this is slowing the performance. I first added a regular index on this, then added a function based index but neither helps. I get the data I need, but it takes too long. I hope someone can give me some ideas about how to optimize the performance of my SQL.
The base table has 1318408 rows. I need to select only a few columns and group and count the rows based on a date value in one of the columns. However the date in the table contains only an end of week value and I need to report based on quarters. The report needs both a date value and a text value for the quarter. So I created two functions that accept a date value and return a date value for the quarter start date and a text value for the quarter the date falls within respectively; my SQL is like this:
select
GLC_DATE2CAL_QRT_STARTDATE_FN(s.work_week_end_date) cyquarter_start_date,
GLC_DATE2CAL_QRTYR_FN(s.work_week_end_date) cyquarter_text,
s.ethnicity ethnicity_code,
et.description ethnicity_desc,
count( unique employee_id ) number_employees
from cpr_employees_snapshot s, ct_vendor_ethnicities et
and trim(s.ethnicity) = et.ethnicity_id
group by GLC_DATE2CAL_QRT_STARTDATE_FN(s.work_week_end_date), GLC_DATE2CAL_QRTYR_FN(s.work_week_end_date), s.ethnicity, et.description
this takes about 1 1/2 minutes to retrieve the data
when I do not use the functions and run this SQL:
select
s.work_week_end_date,
s.ethnicity ethnicity_code,
et.description ethnicity_desc,
count( unique employee_id ) number_employees
from cpr_employees_snapshot s, ct_vendor_ethnicities et
and trim(s.ethnicity) = et.ethnicity_id
group by s.work_week_end_date, s.ethnicity, et.description
it takes 7 seconds.

Well I was successful in writing a case statement that works as a select and it reduces the retrieval time to 5 seconds, the problem now is that when I create a view with it the view is created but with compilation errors; if the select work without errors I don;t know why that is happening. Here is the create view SQL:
CREATE OR REPLACE FORCE VIEW GLC_WORKER_ETHNICITY_VW
cyquarter_start_date,
cyquarter_text,
cyquarter_end_date,
ethnicity_code,
ethnicity_desc,
number_employees
AS
select
case to_number(to_char(s.work_week_end_date, 'mm'))
when 1 then to_date('1/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 2 then to_date('1/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 3 then to_date('1/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 4 then to_date('4/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 5 then to_date('4/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 6 then to_date('4/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 7 then to_date('7/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 8 then to_date('7/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 9 then to_date('7/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 10 then to_date('10/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 11 then to_date('10/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
when 12 then to_date('10/1/' || to_char(s.work_week_end_date, 'yyyy'),'mm/dd/yyyy')
end cyquarter_start_date,
'Q' || to_char(s.work_week_end_date, 'Q') || ' CY ' || to_char(s.work_week_end_date, 'yyyy') cyquarter_text,
s.ethnicity ethnicity_code,
et.description ethnicity_desc,
count( unique employee_id ) number_employees
from cpr_employees_snapshot s, ct_vendor_ethnicities et
where package_id = 727260
and trim(s.ethnicity) = et.ethnicity_id
group by s.work_week_end_date, s.ethnicity, et.description

Performance Tunning and Optimization in Site Studio based sites.

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