oracle dba performance tuning

MySQL performance tuning and Architecture Design-Chapter 1 Basic Principles of scalable design, mysql Tuning Chapter 1 Basic Principles of scalable design Preface: With the rapid increase of information, the development of hardware equipment has gradually become unable to keep up with the application system's requirements for processing capabilities. How can we s

This is an online database http://www.dbonline.cn. Oracle expert tuning secret Preface　　 In the past decade, Oracle has become one of the world's most professional databases. For IT experts, it is to ensure that their company's productivity is improved by leveraging the powerful features of oracle. One of the most

In the past decade, Oracle has become one of the world's most professional databases. For IT experts, it is to ensure that their company's productivity is improved by leveraging the powerful features of oracle. One of the most effective methods is to use ORACLE optimization. It has a lot of parameters and technologies to improve the

Oracle Oracle Expert Tuning Secrets Objective 　　 Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most effective ways to d

Oracle for Linux If you are accustomed to running a database that is relatively less complex, then complete it in Oracle Some day-to-day operations, such as creating a new database or tuning the performance, can be quite complex. Yes Some key configuration files need to be maintained, such as Init.ora, Config.ora, an

products are doing quite well, and the wonderful thing is that its middle-tier architecture integrates the functions of routers, makes network protocol conversions to Oracle services, and connection concentration is quite reasonable. Oracle Corporation does a name server component that is equivalent to DNS server, similar to Microsoft DNS servers. On network security authorization and authentication, I fou

Oracle Oracle DAB two day crash course The purpose of this course is to supplement the DBA's two-day quick (2 days dba) manual. In this course, you will learn more about the tasks outlined in the DBA's two-day quick (2 days dba) manual, and include step-by-step instructions. To view the information for this course

Oracle Oracle DBA Day-to-day management Modified: 2000/8/23 Author: Thomas B. cox,with Christine Choi Objective: This document has very detailed information on one or more Oracle databases per day, monthly, The results of the yearly running status and the results of the check, in the appendix of the document you will s

Oracle Objective Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most effective ways to do this is through Oracle tuning. It h

MySQL performance tuning and Architecture design--9th chapter The performance optimization of MySQL database schema designPreface: Many people think that performance is optimized in the process of writing code (program code or database code), in fact, this is a very big misunderstanding. The real impact of the most

range. That doesn't make sense either. For performance testing, we also need to define a time period. For example, it lasts 15 minutes on a certain throughput. Because the system becomes unstable when the load arrives, the system will stabilize after a two-minute time. In addition, it is possible that your system behaves normally in the first few minutes of the load, and then it is unstable and even collapsed. So it takes so long. This value, we

feature that accelerates SQL adjustment as a whole.Through SPA, once a load (called SQL tuning set or STS) is created, Oracle will use the complex prediction module to repeatedly execute the workload (To obtain the best SQL Execution Plan for the current load. With SPA, we can predict the impact of an SQL load based on system changes, as well as the predicted image parameters.Adjustment, system schema adju

To improve system performance, developers can optimize the system from every angle and level of the system. In addition to the most common code optimizations, the software architecture, the JVM virtual machine layer, the database, and the operating system layer can be tuned in a variety of ways to improve overall system performance.Design TuningDesign tuning is at the top of all

Objective Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most effective ways to do this is through Oracle tuning. It has a large number of

Why is it so difficult to find a good Oracle DBA? This is not only the pain of many CIOs, but also the problem that many IT directors cannot solve. But where do so many people who have obtained OCP certification from ORACLE training courses go? Tom is a database administrator with An OCP license and a certain understanding of the database architecture and operat

With the rapid development of Oracle technology and the market, the number of people working in Oracle DBA is getting bigger and bigger. I can see from some posts that I often post on forums and communities, many people are eager to work in this field now or in the future, and the market demand is also very large, but it is not hard to see that each company has h

[Composition of Oracle data blocks] Lesson 6 ASM management [solved many Oracle problems, solved the storage of tablespaces, etc.] Lesson 7 Oracle backup recovery and data migration. Lesson 8 Rman backup, recovery and management Lesson 9 flash back mechanism and usage Lesson 10 transaction and data consistency (I) [important] Lesson 11th transaction and data con

Performance tuning Summary: The speed of an insert query: The time to insert a record is made up of the following: Connection: (3) Send query to server: (2) Analysis query: (2) Insert record: (1 x record size) Insert index: (1 x index) Close: (+) The number here is somewhat proportional to the overall time. This does not take into account the initial cost of opening the table (which is done once for each c

ORACLE DBA face Test setOne: SQL tuning class1 Enumerate several table connection wayssuch as connection, non-equal connection, self connection, outer connection (left, right, full)2 How to view SQL execution plan without the help of a third-party tool(I) Use explain plan to query plan_table;EXPLAIN PlanSET statement_id= ' QUERY1 'ForSELECT *From aWHERE aa=1;SELE

A graduation on the contact optimization problems, professional optimization also has at least 5 years of time, but now still often hear many people think that optimization is very simple, is to build index problem, it really can not blame everyone, do this line for more than 20 years, at every stage of career, almost can hear such a voice, In many books have also seen such a statement, but here I want to tell you: optimization is not just index, optimization is not very simple thing, this job r