oracle performance tuning guide

settings-xx:parallelgcthreads=n: Sets the number of CPUs used when the parallel collector is collected. Parallel collection//thread count.-xx:maxgcpausemillis=n: Set maximum pause time for parallel collection-xx:gctimeratio=n: Sets the percentage of time that garbage collection takes to run the program. Formula 1/(1+N)Concurrent collector Settings-xx:+cmsincrementalmode: Set to incremental mode. Suitable for single CPU situations (rarely used, deprecated in jdk1.8).-xx:parallelgcthreads=n: Sets

Tags: extracting day workload operation Dictionary sysdate requires module logic operationIn most cases, Oracle uses index t to traverse tables more quickly, and the optimizer improves performance primarily based on defined indexes. However, if the SQL code written in the WHERE clause of the SQL statement is not reasonable, it will cause the optimizer to delete the index and use a full table scan, which is

recommended to intensive reading. Oracle upgraded? How to quickly read Oracle's new features Oracle Database New Features Guide After each new version of Oracle release, look at Oracle Database New Features Guide for the lates

issues at every step of the environment creation. When creating a database, you also need to consider the functionality that affects maintainability. Databases that are easy to maintain can run normally for a longer time, which is also an important part of the overall performance. The create database statement in the "solution" section also takes into account the following maintainability features. Create an automatic UNDO tablespace (automatic UNDO

L Preface The management of Oracle memory, up to 9ir2, is a very important aspect, mismanagement, will likely cause serious performance problems to the database. We'll take a step-by-step approach to all aspects of memory management. L Overview Oracle memory can be divided into the system global zone and the process global area in terms of shared and privat

from pfile= '/home/oracle/init0321.ora '; --Create SPFile--reboot below (by default, SPFile is used)sql> shutdown immediate;Database closed.Database dismounted.ORACLE instance shut down.Sql> startup;Note:Pfile and SPFile default location:SPFile ${oracle_install_path}/product/11.2.0/dbhome_1/dbs/spfileorcl.oraIf the parameter does not specify a pfile location, the following file is used by defaultPfile ${oracle_install_path}/product/11.2.0/dbhome_1/db

the evaluation indexes before and after the database adjustment: The tradeoff between response time and throughput, the availability of database, the hit rate of database and the efficiency of memory usage, so as to measure the effect of adjusting measures and the direction of guiding adjustment.Performance tuning of an Oracle database should be done in a certain order, as the system's adjustments in the p

LoadRunner monitors OracleHttp://www.docin.com/p-92077154.html HP performance monitoring best practices-database resource monitoring-Oracle monitoring Oracle Database Performance Tuning FAQHttp://www.orafaq.com/wiki/Oracle_database_Performance_Tuning_FAQ

TablesA table describes an entity such as employees. You define a table with a table name, such as employees, and set of columns. In general, you give each column a name, a data type, and a width when you create the table.1. Ordinary heap table (heap-organized Tables)For all scenarios, applications with specific scenarios have a performance bottleneck, and alternative types of tables need to be replaced depending on the scenario.2. Global temp Table (

By reading Oracle Enterprise Asset Management User Guide, my preliminary understanding of Oracle Eam is part of the Oracle EBS suite that addresses the integrated and conventional equipment of an asset-intensive organization Maintenance requirements. Track all maintenance costs and work histories at the device level

Tags: Oracle performance tuning Oracle database optimization Oracle Optimization training Oracle Performance Tuning

Tags: merging RDBMS LTE data file nbsp Select line div2016-11-22Subquery: Scalar subquery inline view (In-line views) semi-join/reverse-connect scalar subquery Select followed by subquery similar to a custom function to overwrite an inline view (In-line view) from followed by a subquery similar to Design view sub-query A condom query is a garbage design that can cause performance problems. A semi-connection is a subquery that has a in/exists in the ba

Tags: Oracle performance tuning Oracle database optimization Oracle Optimization training Oracle Performance Tuning

Tags: Oracle performance tuning Oracle database optimization Oracle Optimization training Oracle Performance Tuning

Oracle Performance Diagnosis art (milestone book on Oracle Database optimization) [Original book name] troubleshooting Oracle Performance[Original Publishing House] apress[Author] (Swiss) Christian antognini [same as the author's work] [Translator's introduction][Translated

Tags: array rar organization Throw exception build log job schedule exec expressionThis week's book is the Ultimate guide to Oracle's C PL (SQL) programming, published by the mechanical industry press, Sun Fingdong, Wang Yu, Guo Xiaohui. Content Introduction: The ultimate guide to Oracle 12c PL/SQL is the most systematic, comprehensive, practical and

the hard disks. 6. Adjust operating system parameters such as the Oracle database running on UNIX operating systems, you can adjust the size of the UNIX data buffer, the size of the memory that each process can use, and so on. In fact, the database optimization measures mentioned above are interrelated. Oracle database performance degradation is basically the us

: Network Disk DownloadContent IntroductionEditing the volume of information contained in this book can improve your programming skills to a new level. You'll learn how to write dynamic PL/SQL programs and Oracle database interfaces, perform complex computations, and use advanced techniques to control error conditions. In addition, you will receive up-to-date information on Pl/sqltoolkit,java integration and perfo