Oracle11g PL/SQL Programming is an essential resource for anyone looking to advance their skills in PL/SQL within Oracle11g. This guide delves deep into programming techniques, data structures, error handling, and optimizing database functions. You'll learn the core PL/SQL concepts and advanced methods necessary to build robust database applications and streamline workflows. Key features include detailed explanations of stored procedures, triggers, and PL/SQL packages, all designed to enhance your command over Oracle databases. Perfect for both beginners and seasoned developers, this book equips you with practical, real-world knowledge.
Mastering Oracle 11g PL/SQL Programming
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Mastering Oracle 10g PL/SQL Programming
Oracle 10g PL/SQL programming is a key skill in database management and application development, especially for developers aiming to deeply understand the Oracle database system and efficiently process data. This book, 'Mastering Oracle 10g PL/SQL Programming', is a resource that explores this topic in depth, helping readers master Oracle’s powerful programming interface.
PL/SQL, short for Procedural Language/Structured Query Language, is an extension of SQL for Oracle databases. It combines SQL statements with procedural programming elements, offering a richer set of features and control capabilities. In Oracle 10g, PL/SQL has matured significantly, supporting advanced features such as exception handling, cursors, packages, stored procedures, functions, and triggers.
PL/SQL allows developers to write structured code, including loops and conditional branches. For instance, a FOR loop can be used to iterate over collections, or an IF-THEN-ELSIF-ELSE structure to implement conditional logic. These features make PL/SQL highly flexible for handling complex business logic.
PL/SQL also supports object-oriented concepts like types, object methods, collections, and nested tables, enabling you to define custom data types and create objects with both data and behavior. Additionally, PL/SQL supports overloading, allowing multiple functions or procedures to share the same name but with different parameter lists, providing flexibility in various scenarios.
In Oracle 10g, PL/SQL's performance has been significantly enhanced. The optimizer better handles PL/SQL code, improving execution efficiency. By using PL/SQL cursors, developers can process data directly in the database, reducing the volume of data transmitted over the network and improving application performance.
This book likely covers how to create and manage stored procedures, functions, and triggers—core components of PL/SQL. Stored procedures are reusable sets of SQL and PL/SQL statements that encapsulate complex operations and enhance security. Functions return a single value, often used for queries and calculations. Triggers automatically execute in response to specific database events (like INSERT, UPDATE, or DELETE), enforcing business rules and data integrity.
Another key feature of PL/SQL is its exception handling mechanism. By using the BEGIN...EXCEPTION block, developers can catch and handle runtime errors, ensuring robust programs. Furthermore, PL/SQL's dynamic SQL capabilities allow for constructing and executing SQL statements at runtime, enhancing program flexibility.
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Oracle 11g调优是数据库管理员和性能工程师在管理高性能、高可用性的数据库系统时的重要技能。Oracle Database 11g提供了丰富的功能和工具,用于优化查询性能、内存管理和资源分配,确保数据库高效运行。以下是一些核心的Oracle 11g性能调优知识点:
1. SQL调优SQL查询是数据库性能的关键因素。通过分析慢查询日志,使用Explain Plan分析执行计划,以及SQL Trace和TKPROF工具,可以找出性能瓶颈并优化SQL语句。
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3. 内存管理理解SGA(System Global Area)和PGA(Program Global Area)的工作原理至关重要。正确设置SGA的组件(如数据缓冲区高速缓存、重做日志缓冲区和共享池)可以提高数据缓存效率。PGA则管理每个用户进程的内存,包括排序区和游标。
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5. 调度与资源管理通过DBMS_Scheduler管理后台作业,确保关键任务在合适的时间执行。使用ResourceManager进行资源划分,为不同用户和应用分配数据库资源。
6. 数据库统计信息保持统计信息的准确性和时效性对优化执行计划至关重要。自动统计信息收集和手工统计更新是监控和维护的关键。
7. 数据库监控与诊断利用AWR(Automatic Workload Repository)和ASH(Active Session History)报告分析性能问题。这些工具提供关于数据库性能的深入见解,帮助识别等待事件和性能热点。
8. 初始化参数调整初始化参数设置直接影响数据库性能。理解每个参数的作用,并根据系统需求进行调整,是优化的关键。
9. 回滚段和事务管理合理设置回滚段大小和事务管理策略可以减少死锁并提高并发性能。
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Oracle JDeveloper 11g ADF Sample 学习啦!将帮助您深入了解Oracle的开发工具,带您快速掌握JDeveloper 11g ADF的核心内容。让我们一起加油,提升oracle技能吧!
1. 认识 JDeveloper 11g
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轻松掌握Oracle常用工具:Oracle Universal Installer、Net Configuration Assistant、SQL Developer、SQL*Plus 的功能和使用方法。
SQL和PL/SQL核心技术:
掌握SQL语句和PL/SQL的各种基础知识和高级特性:
记录类型
集合类型
对象类型
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开发利器:
学习编写高效的SQL语句和开发强大的PL/SQL块。
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经验丰富的Oracle应用开发人员
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Scala并发模型:深入探讨Scala提供的各种并发机制,如Futures、Promises、Actors等,并解释它们的工作原理及应用场景。
并发编程模式:学习不同的并发编程模式,比如共享内存模型和消息传递模型,并比较它们的优缺点。
并发错误处理:讨论并发编程中常见的问题,如死锁、竞态条件等,并提供解决方案。
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The Art of Assembly Language ProgrammingVisitor Count: As of October 17, 1996
Forward
Why Would Anyone Learn This Stuff?
Chapter Overview:
What’s Wrong With Assembly Language? - Examining criticisms and limitations.
What’s Right With Assembly Language? - Understanding the benefits and uses.
Text Organization and Teaching Approach - Overview of pedagogical concerns and text layout.
Section One: Machine Organization
Chapter 1 - Data Representation
1.1 Numbering Systems
1.1.1 - Overview of the Decimal System.
1.1.2 - Introduction to the Binary System.
1.1.3 - Binary Formats.
1.2 Data Organization
1.2.1 - Bits
1.2.2 - Nibbles
1.2.3 - Bytes
1.2.4 - Words
1.2.5 - Double Words
1.3 Hexadecimal Numbering System - Exploring hexadecimal representations.
Arithmetic and Logical Operations
1.4 - Arithmetic on Binary and Hexadecimal.
1.5 - Logical Operations on Bits.
1.6 - Logical Operations on Binary Numbers and Bit Strings.
Additional Concepts in Binary Data
1.7 Signed and Unsigned Numbers - Differences and implications.
1.8 Sign and Zero Extension - Practical uses.
1.9 Shifts and Rotates - Binary manipulation techniques.
1.10 Bit Fields and Packed Data - Efficient data storage methods.
1.11 The ASCII Character Set - Text representation in binary.
Summary
Assembly Language provides a foundational understanding of data representation, bitwise operations, and direct memory manipulation, essential for optimizing code and achieving hardware-level control.
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