Introduction to five Oracle performance optimization tools

This article describes the Oracle performance optimization tool, Oracle database online data dictionary, and the performance evaluation details of the Oracle Performance Optimization System, for administrators to refer to their own information system types.

1. Oracle performance optimization tool

Including: Oracle Database Online Data Dictionary, operating system tools, SQL language tracking tools, OEM, etc.

1) Oracle Database Online Data Dictionary
The Oracle online data dictionary can reflect the dynamic running status of Oracle, which is helpful for adjusting database performance.

2) Operating System Tools
For example, you can use commands such as Vmstat and Iostat on Unix operating systems to view system-level memory and hard disk I/O usage. These tools can help administrators find out where system bottlenecks occur.

3) SQL Trace Facility)
The SQL language tracking tool can record the execution of SQL statements. administrators can use virtual tables to adjust instances and use SQL statement tracking files to adjust application performance. The SQL language tracking tool outputs the results into an operating system.

4) Oracle Enterprise ManagerOEM)
This is a graphical user management interface that allows you to easily manage databases without having to remember complex commands for Oracle database management.

5) the SQL language optimization command can help programmers write more efficient Oracle performance optimization tools and help us effectively optimize Oracle performance.

2. Oracle Performance Optimization System Performance Evaluation

Different types of information systems require different database parameters. Database administrators need to consider different database parameters based on their information system types.

1) online transaction processing Information System (OLTP) this type of information system generally requires a large number of Insert and Update operations. Typical systems include the air ticket sales system and the bank savings system. The OLTP system must ensure database concurrency, reliability, and end user speed. The Oracle databases used by such systems must mainly consider the following parameters:
A. Is the database rollback segment sufficient?
B. Do I need to create an Oracle database index, clustering, or hash?
C. Is the system's global SGA size sufficient?
D. Is the SQL statement efficient?

2) Data Warehousing (Data Warehousing) The main task of this information system is to query massive Data in Oracle to obtain certain rules between Data. The database administrator needs
A. Is B * used *? Index or Bitmap index?
B. are parallel SQL queries used to improve query efficiency?
C. are stored procedures written using PL/SQL functions?

1. Explanation of nine basic Oracle Performance Optimization Methods
2. Key Points of Oracle Performance Optimization
3. Rollback Segment optimization for Oracle Performance Optimization
4. Oracle performance optimization achieved through Partitioning technology
5. Possible Oracle Performance Optimization Problems