sybase performance and tuning guide volume 2

... Locking Activity 12- 20 TopSessions (Diagnostic Pack) 12- 22 Guidelines: Resolve Contention 12- 24 Deadlocks 12- 26 Summary 12- 29 Quick Reference 12- 30 Lesson 13: SQL Issues and Tuning Considerations ... Introduction Objectives 1 -2 Lesson 2: Tuning Overview Objectives 2- 2 System Tuning Overview 2- 3 Tuning Goals 2- 5 Tuning Steps 2- 7 Summary 2- 8 Lesson 3: Oracle Alert and Trace Files Objectives 3 -2 Diagnostic ... Section 4 -21 I/O Statistics Section 4 -22 Latches 4 -23 1 Course Introduction Enterprise DBA Part 2: Performance Tuning Workshop 2- 5 Tuning Goals Tuning Goals Measurable Tuning Goals When tuning...

Ngày tải lên: 02/07/2014, 00:20

... pA TC913 1.5 MHz 2. 5 4.5V (V DD = 6.5V) 90 pA (max) MCP 627 1 /2/ 3/4 2 MHz 0.9 -0.3V to 5.3V 1 pA MCP601 /2/ 3/4 2. 8 MHz 2. 3 -0.3V to 3.8V 1 pA MCP 628 1 /2/ 3/4 5 MHz 2. 5 -0.3V to 5.3V 1 pA MCP6 021 /2/ 3/4 10 ... Taipei Tel: 886 -2- 2500-6610 Thailand - Bangkok Tel: 66 -2- 694-1351 EUROPE Austria - Weis Tel: 43- 724 2 -22 44-399 Denmark - Copenhagen Tel: 45-4450 -28 28 France - Paris Tel: 33-1-69-53-63 -20 Germany - ... 86-5 32- 85 02- 7355 China - Shanghai Tel: 86 -21 -5407-5533 China - Shenyang Tel: 86 -24 -23 34 -28 29 China - Shenzhen Tel: 86-755- 820 3 -26 60 China - Shunde Tel: 86-757 -28 39-5507 China - Wuhan Tel: 86 -27 -5980-5300 China...

Ngày tải lên: 27/06/2014, 14:20

... 8-19 Tuning Checkpoint 8 -22 Checkpoint Tuning Guidelines 8 -23 Multiple I/O Slaves 8 -25 iv Enterprise DBA Part 2: Performance Tuning Workshop Contents Latch Types 4 -25 Oracle Wait Events 4 -26 Statistics ... Degree DAY 1 SYS_GROUP 100% 20 2 OLTP 100% 0 3 DSS 100% 20 NIGHT 1 SYS_GROUP 100% 20 2 OLTP 25 % 0 2 DSS 75% 20 3 OLTP 100% 0 14-10 Enterprise DBA Part 2: Performance Tuning Workshop Lesson ... Expert 15-7 Tuning Session Scope 15-9 Data Collection 15- 12 Collected Data 15 -21 Attributes 15 -22 Rules 15 -24 Analysis 15 -26 Recommendations 15 -27 Reports 15 -28 Implementation 15- 32 Summary 15-33 Lesson...

Ngày tải lên: 02/07/2014, 00:20

... this grounding scheme is that the analog devices (MCP 320 2, 12- bit A/D converter and MCP4 125 , 2. 5V voltage reference) are at the far right hand side of the board. This placement ensures that digital ... diagram for layouts in Figures 1, 2, 4 and 5. This is the circuit diagram from Microchips MXDEVđ evaluation board for the 10- and 12- bit ADCs (MCP300X and MCP 320 X). Figure 3b: Analog section ... diagram for layouts in Figures 1, 2, 4 and 5. This is the circuit diagram from Microchips MXDEVđ evaluation board for the 10- and 12- bit ADCs (MCP300X and MCP 320 X). Figure 4: Top layer of a...

Ngày tải lên: 08/08/2014, 12:22

... at least two ground connects: AGND and DGND. The converters illustrated here are the MCP 320 1 and MCP3008 from Microchip. 12 Analog and Interface Guide – Volume 1 An Intuitive Approach to Mixed ... data from the 320 1, 12- bit A/D converter produces an interesting periodic signal. This signal source was traced back to the power supply. 16 Analog and Interface Guide – Volume 1 An Intuitive ... amplifier (A1 and A2). Following the instrumentation amplifier a low pass filter (A3) is inserted to eliminate aliased noise from the 12- bit A/D converter conversion. Figure 2: The time domain...

Ngày tải lên: 08/08/2014, 12:22

... pA TC913 1.5 MHz 2. 5 4.5V (V DD = 6.5V) 90 pA (max) MCP 627 1 /2/ 3/4 2 MHz 0.9 -0.3V to 5.3V 1 pA MCP601 /2/ 3/4 2. 8 MHz 2. 3 -0.3V to 3.8V 1 pA MCP 628 1 /2/ 3/4 5 MHz 2. 5 -0.3V to 5.3V 1 pA MCP6 021 /2/ 3/4 10 ... trace. 27 Analog and Interface Guide – Volume 1 Analog Design Notes Notes: 19 Analog and Interface Guide – Volume 1 Analog Design Notes Projectors, large power supplies, datacom switches and routers, ... voltage that is applied to the fan. 22 Analog and Interface Guide – Volume 1 Analog Design Notes The MCP6S2X is a PGA family that uses a precision, wide bandwidth internal amplifier. This precision...

Ngày tải lên: 08/08/2014, 12:22

Ngày tải lên: 08/08/2014, 12:22

Ngày tải lên: 20/10/2014, 14:20

... Instance Performance 22 Instance Tuning Performance Tuning Principles 22 -2 Baselines 22 -2 The Symptoms and the Problems 22 -3 When to Tune 22 -4 Performance Tuning Steps 22 -5 Define the Problem 22 -6 Examine ... Events and Potential Causes 22 -19 Additional Statistics 22 -20 Wait Events 22 -24 SQL*Net 22 -25 buffer busy waits 22 -27 db file scattered read 22 -29 db file sequential read 22 -31 direct path read and ... 22 -33 direct path write 22 -35 enqueue 22 -36 free buffer waits 22 -39 latch free 22 -41 log buffer space 22 -46 log file switch 22 -46 log file sync 22 -48 rdbms ipc reply 22 -48 Idle Wait Events 22 -49 ...

Ngày tải lên: 07/03/2014, 23:20

... latency. Table 3-1. Page Size and Response Time Access Type Throughput 2KB 10KB 20 KB 50KB 100KB 1MB 28 .8K 28 800 0.6 2. 8 5.7 14 .2 28.4 29 1.3 56K 57600 0.3 1.4 2. 8 7.1 14 .2 145.6 DSL 640000 0.0 0.1 ... operations). Table 3 -2. User Profile Data User Transaction Page Hits Hit Ratio % Operations Home page 58 ,28 5 22 . 82 2.5 Search (good) 36,641 14.35 1.6 Search (bad) 2, 599 1. 02 0.1 Add item 4,4 82 1.76 0 .2 Add ... 36.61 4.0 0.0061 02 58.50 0.3570 Login 1.73 0 .2 0.00 028 8 25 1.69 0.0 726 Register 1.06 0.1 0.000176 62. 39 0.0110 Zip code 15.96 1.8 0.0 026 61 70.10 0.1865 View cart 2. 53 0.3 0.000 421 84.50 0.0356 Totals...

Ngày tải lên: 05/10/2013, 14:20

... leaders 22 4 7 Managing power, politics and conflict 27 6 8 Leading organizational and cultural change 29 8 9 Innovation and organizational learning 347 10 Managing employee knowledge and intellectual ... process 171 4 .2 Semco: tore up the rulebook in the 1980s 196 5.1 Team rules 22 0 6.1 Confidence in women 24 4 7.1 The two faces of power and politics 28 0 9.1 Linear and lateral thinking 3 52 10.1 Knowledge ... Out with the old and in with the new 454 12. 1 Perceptions of occupations’ ethical standards 507 12. 2 Top five performing ethical investment trusts in Australia, 20 01 2 508 12. 3 Transparency...

Ngày tải lên: 13/12/2013, 14:54

... Development 2- 21 Workload Testing, Modeling, and Implementation 2- 22 Sizing Data 2- 22 Estimating Workloads 2- 23 Application Modeling 2- 24 Testing, Debugging, and Validating a Design 2- 24 Deploying ... iv Part II Performance Planning 2 Designing and Developing for Performance Oracle Methodology 2- 2 Understanding Investment Options 2- 2 Understanding Scalability 2- 3 What is Scalability? 2- 3 System ... Tuning Features and Tools Oracleđ Database Performance Tuning Guide 10g Release 1 (10.1) Part No. B107 52- 01 December 20 03 Introduction to Performance Tuning Features and Tools Performance Tuning...

Ngày tải lên: 24/01/2014, 08:20

... first examined. The Performance Finding Details page appears. Oracle Database 2 Day + Performance Tuning Guide, 10g Release 2 (10 .2) B28051-03 Copyright â 20 06, 20 10, Oracle and/ or its affiliates. ... time and CPU time of all user sessions that are not idle. The goal of tuning the performance of a Oracleđ Database 2 Day + Performance Tuning Guide 10g Release 2 (10 .2) B28051-03 April 20 10 Easy, ... Tools for Tuning the Database 1-4 Oracle Database 2 Day + Performance Tuning Guide Part I Getting Started Part I provides an introduction to this document and explains the Oracle Database performance...

Ngày tải lên: 20/02/2014, 05:21

... begin? 17 2 Logical Database Design for Performance 19 2. 1 Introducing logical database design for performance 19 2. 2 Commercial normalization techniques 21 2. 2.1 Referential integrity 22 2. 2 .2 Primary ... selection 22 5 7.4.1 Does a useful index exist? 22 6 7.4 .2 How selective is the search argument? 22 6 7.4.3 Key distribution statistics 22 7 7.4.4 Column statistics 23 3 7.4.5 Updating index and column ... Optimization? 21 7 7.1 When is a query optimized? 21 8 7 .2 The steps in query optimization 21 8 7.3 Query analysis 21 9 7.3.1 Search arguments 21 9 7.3 .2 OR clauses 22 3 7.3.3 Join clauses 22 4 7.4 Index...

Ngày tải lên: 14/03/2014, 16:20

... 9-9 Viewing the Tuning History 9-9 10 Tuning SQL Statements Tuning SQL Statements Using SQL Tuning Advisor 10-1 Tuning SQL Manually Using SQL Tuning Advisor 10 -2 Viewing Automatic SQL Tuning Results ... Additional Information. Common Performance Problems Found in Oracle Databases 2- 10 Oracle Database 2 Day + Performance Tuning Guide ■ Measuring the performance before and after the change ■ Generating ... Day + Performance Tuning Guide 11g Release 2 (11 .2) E10 822 -01 July 20 09 Monitoring User Activity 4-4 Oracle Database 2 Day + Performance Tuning Guide ■ "Monitoring Top Actions" on page...

Ngày tải lên: 17/03/2014, 00:20

... Oracle Performance? xxv Part I Performance Tuning 1 Performance Tuning Overview Introduction to Performance Tuning 1-1 Performance Planning 1-1 Instance Tuning 1-1 Performance Principles 1 -2 Baselines ... 10-19 undo header 10-19 undo block 10 -20 db file scattered read 10 -20 Oracle Database Performance Tuning Guide, 10g Release 2 (10 .2) B1 421 1-03 Copyright © 20 00, 20 08, Oracle. All rights reserved. Primary ... Methodology 2- 1 Understanding Investment Options 2- 1 Understanding Scalability 2- 2 What is Scalability? 2- 2 System Scalability 2- 3 xxvi The Automatic Workload Repository (AWR) collects, processes, and...

Ngày tải lên: 23/03/2014, 16:20

... 1-55558 -22 4-9, 1072pp, 20 00 Jerry Cochran, Mission-Critical Microsoftđ Exchange 20 00: Building Highly Available Messaging and Knowledge Management Systems, ISBN 1-55558 -23 3-8, 320 pp, 20 01 Kieran ... extent is shown in Figure 2. 12, and a mixed extent is shown in Figure 2. 13 . Figure 2. 12: A uniform extent Figure 2. 13: A mixed extent The reason that SQL Server 20 00 uses mixed extents ... Data Volume Information Table Name # of Rows Row Size Space Needed % Annual Growth Space Needed in 12 Months Accounts 25 ,000 100 2, 500,000 10 2, 750,000 Branches 100 20 0 20 ,000 5 21 ,000 Customers...

Ngày tải lên: 04/06/2014, 13:17

Ngày tải lên: 10/08/2014, 07:21

Ngày tải lên: 10/08/2014, 07:21

Ngày tải lên: 10/08/2014, 07:21