crystal reports barcode font formula PERFOR MAN CE TUNING: TUNING THE INSTA NCE in Font

Printer Code39 in Font PERFOR MAN CE TUNING: TUNING THE INSTA NCE

CHAPTER 20 PERFOR MAN CE TUNING: TUNING THE INSTA NCE
Code 39 Maker In None
Using Barcode generation for Font Control to generate, create ANSI/AIM Code 39 image in Font applications.
www.OnBarcode.com
Code128 Printer In None
Using Barcode generator for Font Control to generate, create Code 128 Code Set B image in Font applications.
www.OnBarcode.com
Figure 20-10. The top 10 SQL comparison report Instead of running myriad SQL scripts and manually examining various statistics, as is the tradition, you can use the Compare Periods feature to zoom in quickly on the reasons for deterioration in recent database performance compared to a past period of time.
Code 3 Of 9 Creator In None
Using Barcode drawer for Font Control to generate, create Code 3/9 image in Font applications.
www.OnBarcode.com
Paint Barcode In None
Using Barcode drawer for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Eliminating the Contention
Create Barcode In None
Using Barcode generator for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Creating GTIN - 12 In None
Using Barcode generation for Font Control to generate, create UPCA image in Font applications.
www.OnBarcode.com
Once you identify wait events due to contention in the system, you need to remove the bottleneck. Of course, this is easier said than done in the short run. You may be able to fix some contention problems right away, whereas you may need more time with others. Problems such as high db file scattered read events, which are due to full table scans, may indicate that the I/O workload of the system needs to be reduced. However, if the reduction in I/O requires creating new indexes and rewriting SQL statements, obviously you can t fix the problem right away. You can t add disks and rearrange objects to reduce hot spots right away either. Similarly, most latch contention requires changes at the application level. Just make sure you don t perform a whole bunch of changes at once you ll never be able to find out what fixed the problem (or in some cases, what made it worse). The trick, as usual, is to go after the problems you can fix in the short run. Problems that you can fix by changing the memory allocation to the shared pool or the buffer cache you can easily handle almost immediately by dynamically adjusting the cache values. You can also take care of any changes that concern the redo logs right away. If you notice one or two users causing a CPU bottleneck, it may be a smart idea to kill those sessions so the database as a whole will perform better. As you know, prevention is much better than a cure, so consider using the Oracle Database Resource Manager tool ( 12 shows you in detail how to use the Database Resource Manager) to create resource groups and prevent a single user or group from monopolizing the CPU usage.
Data Matrix 2d Barcode Printer In None
Using Barcode creator for Font Control to generate, create Data Matrix ECC200 image in Font applications.
www.OnBarcode.com
Printing USPS OneCode Solution Barcode In None
Using Barcode creator for Font Control to generate, create USPS Intelligent Mail image in Font applications.
www.OnBarcode.com
CH A PT ER 2 0 PERF O RMAN CE TUNI NG: TUN ING TH E I NS TA NCE
Decoding Code 39 Full ASCII In .NET Framework
Using Barcode reader for .NET framework Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Recognizing Code 39 In C#
Using Barcode reader for .NET framework Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
If intense latch contention is slowing your database down, you probably should be setting the CURSOR_SHARING initialization parameter s value to FORCE or SIMILAR to ameliorate the situation. Most other changes, though, may require more time-consuming solutions. Some changes may even require major changes in the code or the addition or modification of important indexes. However, even if the problem isn t fixed immediately, you have learned your craft, and you re on the right path to improving instance performance. Although I ve discussed various methods and techniques that use SQL scripts to analyze instance performance, try to make the OEM Database Control (or Grid Control) the center of your database performance monitoring, and use Oracle s powerful tools, such as the ADDM, to save time. The AWR and ASH reports are also highly useful when searching for root causes of performance problems.
Printing PDF-417 2d Barcode In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create PDF 417 image in ASP.NET applications.
www.OnBarcode.com
Matrix Generation In Visual C#
Using Barcode printer for .NET Control to generate, create Matrix 2D Barcode image in VS .NET applications.
www.OnBarcode.com
Real Application Testing
Print Code 128 Code Set B In None
Using Barcode maker for Software Control to generate, create Code 128C image in Software applications.
www.OnBarcode.com
Paint QR Code ISO/IEC18004 In Visual C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create QR Code 2d barcode image in .NET framework applications.
www.OnBarcode.com
One of the biggest problems facing a DBA is how to figure out the potential performance impact of a major system change, such as an upgrade to a new release of the database server, for example. Several third-party tools can help you test the changes, but Oracle provides you the new Real Application Testing option, also known as Total Recall, which is an easy-to-use solution that enables you to test the impact of system changes in a test environment before introducing those changes in the production system. You can thus safely introduce changes into your system without any adverse impact. Real Application Testing consists of two distinct features, Database Replay and the SQL Performance Analyzer, that together provide a complete solution to assess the impact of major system changes. I explain these features in the following sections.
Printing Quick Response Code In Java
Using Barcode creation for Eclipse BIRT Control to generate, create Quick Response Code image in BIRT applications.
www.OnBarcode.com
PDF417 Generator In VB.NET
Using Barcode printer for Visual Studio .NET Control to generate, create PDF417 image in Visual Studio .NET applications.
www.OnBarcode.com
Barcode Recognizer In Java
Using Barcode Control SDK for BIRT reports Control to generate, create, read, scan barcode image in Eclipse BIRT applications.
www.OnBarcode.com
Painting EAN / UCC - 13 In Visual Basic .NET
Using Barcode creation for Visual Studio .NET Control to generate, create UCC-128 image in Visual Studio .NET applications.
www.OnBarcode.com
USS Code 128 Drawer In C#
Using Barcode creation for .NET Control to generate, create Code 128C image in VS .NET applications.
www.OnBarcode.com
Printing QR In None
Using Barcode creator for Software Control to generate, create QR-Code image in Software applications.
www.OnBarcode.com
Copyright © OnBarcode.com . All rights reserved.