jd tuning

IOS Performance Tuning series: use Zombies to dynamically analyze zombie objects in the memory and optimize zombies Hardware wide: The fourth article in the IOS Performance Tuning series, which is expected to be updated continuously over 20 articles. The first two articles, IOS Performance Tuning series: Analyze static analysis and IOS Performance

[Oracle] oracledba6 SQL Tuning sets, oracledba6tuning You want to use the SQL Tuning Advisor to generate recommendation S for badly written SQL statements in your development environment. W Hich three sources can you select for the advisor to analyze? (Choose Three .) A. Top SQL B. snapshots C. SQL Tuning sets D. index access path E. optimizer statistics

Oracle Database 10g Performance Tuning tips and techniques is recommended. For Oracle performance test, diagnosis, analysis, and optimization, see! Chapter 2 Basic index principles (beginner developer and beginner dBA). For Oracle index optimization, refer! Chapter 4 tuning the database with initialization parameters (DBA), optimize the Oracle database by adjusting the initialization parameters Chap

Performance Tuning is not a simple task. There is no omnipotent solution at all, but you can use some basic principles to implement it. In general, performance tuning is the role of DBA. however, DBA does not have time to carefully check every change made to the stored procedure. so learning some basic tuning may help you save the effort of rewriting.CodeTime.I

BEA WebLogic jrockit usage and Performance Tuning 1. Introduction to jrockit OptimizationJrockit is an adaptive JVM that can automatically adjust itself to adapt to the underlying hardware. Therefore, its optimization is mainly focused on parameters that require manual intervention, such: the number of Ram resources to be allocated to jrockit. Jrockit has a set of non-standard-x startup options that we can use to adjust JVM. Jrockit has two major grou

Want to keep your project running at high performance? Here are some tips you can take to eliminate cache bottlenecks, as well as some other performance tuning recommendations.Most developers think that performance optimization is a complex topic that requires a lot of work experience and relevant knowledge theory. Well, it's not entirely wrong. Optimizing an application for performance optimization may not be an easy task, but it doesn't mean that yo

There are very few courses on Java performance Tuning, so a comprehensive and in-depth introduction to Java performance Tuning, North wind is exclusive, special lecturer, more than 10 years of Java development work experience, Senior software development system architect, this set of courses are years of work experience and experiences of the summary, The course has a high gold content and practical value,

Why do you want performance tuning? Most Linux distributions are designed to be fully compatible with most computers in the marketplace. This is a fairly mixed set of hardware (hard drive, video card, NIC, etc.). So Red Hat, Suse,mandriva and some other distribution vendors have chosen some conservative settings to make sure the installation is successful.Simply put: Your distribution is running well, but it can work better!For example, there may be

SQL Tuning Advisor:Create a taskDECLAREMy_task_name VARCHAR2 (30); My_sqltext CLOB; BEGIN my_sqltext: = ' SELECT/*+ ORDERED */* ' | | ' From Employees E, Locations L, departments d ' | | ' WHERE e.department_id = d.department_id and ' | | ' l.location_id = d.location_id and ' | | ' e.employee_id Running tasksBEGIN Dbms_sqltune. Execute_tuning_task (task_n

statement that will form a specific plan, and the resulting specific plan is not always optimal, which is related to the content distribution, the amount of data, the type of data in the database's existing data tables, and the statistics that are used to record these details.All optimal planning choices are based on existing statistical information, and if our statistics are not updated in a timely manner, then the optimal execution plan will not be the best, and sometimes the worst.Reference

Label:You want to use the SQL Tuning Advisor to generate recommendations for badly written SQL statements in your development environment. WHich Three sources can you select for the advisor to analyze? (ChooseThree.)A. Top SQLB. SnapshotsC. SQL Tuning SetsD. Index Access PathE. Optimizer statisticsF. Materialized view logsAnswer:a,b,cYou want to use the SQL Tuning