oracle performance analyzer

This article mainly describes how to greatly improve the performance of Oracle JDBC programs by using the connection and statement pool features. We generally use pool technologies, such as connection pool and statement pool, to significantly improve the performance of database-intensive applications, because this can achieve Object reuse, you do not need to spen

This article describes how to adjust the performance of Oracle 9i on AIX, we all know that memory access conflicts occur when the actual applied memory of a process exceeds the total physical memory of the system, the system exchanges programs and data between memory and hard disk. Control Memory switching (Paging) A large number of memory swap operations will greatly affect the

Absrtact: By discussing and studying the characteristics and principles of Oracle Server and Client/server, this paper expounds some principles and methods of improving and adjusting the performance of Oracle Application system. Keywords: Oracle; client/server; system whole zone; network I/O; rollback segment.

Tags: style http color using IO strong data artarticle turned from: http://www.wzsky.net/html/Program/DataBase/74799.htmlRecently, the important role of freelist has gradually been recognized by Oracle DBA, and there are some related discussions on the Internet. This article takes freelist as the clue to the Oracle's storage management principle to carry on the thorough discussion, involves the Oracle secti

oracle| Performance | optimization | statement 1. Choose the appropriate Oracle OptimizerOracle's optimizer total of 3 kinds A, rule (rule-based) B, cost (based on costs) C, CHOOSE (optional) set the default optimizer to pass various declarations of optimizer_mode parameters in the Init.ora file, such as Rule,cost,choose,all_rows,first_rows. You will of course ov

TABLE can be used Test_ TAB SHRINK Space Command to move HWM online,If you want to compress the index of the table at the same time, you can publish: ALTER table Test_tab SHRINK SPACE CASCADENote: When you use this command, you need to make the row migrate to row movement (see example) first.Unlike using Alter TABLE MOVE, you do not need to refactor the index after you execute this command.Oracle Official NotesShrinking Database Segments OnlineYou use online segment shrink to reclaim fragmented

each record in the Table. ORACLE optimizes full table scanning by reading multiple data blocks at a time. B. You can use ROWID-based access to access a table through ROWID to improve the efficiency of table access. ROWID contains the physical location information recorded in the table. ORACLE uses indexes to connect data with the physical location where data is stored (ROWID. Generally, indexes provide a q

Oracle DBA manual-database diagnosis cases and performance optimization practices (planned by guobiao) Pricing: ￥59.80 Member price: ￥44.85 (off) Example of this book free trial: http://www.china-pub.com/196286 [Basic Information]Author: Editorial Board of Oracle DBA ManualPress: Electronic Industry PressISBN: 9787121101397Mounting time:Published on: February 1,

Branch of the database performance problems, help to help diagnose. The database is a Oracle10.2.0.3 RAC environment, but is now in a single node working state. The current problem is that page access is slow and no further information is available. According to the description, the landing server first checked the system's health by using top, and found that the system was not very busy: bash-3.00$/usr/local/bin/top Load averages:1.76, 1.63, 1.59

Oracle| Notes | performance Oracle Performance Diagnostics-Learning Statspack Notes (ii) [Overview] Author: Liu Yingbo Time: 2004-3-3 Mail:liuyingbo@126.com, please correct me. Reprint please indicate the source and the author Oracle

-based Database recovery11th: Diagnostic and response data failure three (perform physical block recovery, perform rman recovery, perform table space point-in-time recovery, perform table and table partition Recovery)Performing data Block physical recoveryPerforming Rman Recovery: Advanced scriptingPerform point-in-time table space recoveryRecovering tables with Rman backup sets12th: Optimizing Rman PerformancePurpose of Rman performance optimizationB

BKJIA database channel recommends the Oracle database debugging and performance optimization topic for you to better understand this article. The basic Oracle performance optimization methods include: 1) set up reasonable Oracle performa