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Spis treści

Resilient Oracle PL/SQL eBook -- spis treści

• Preface
  • Who This Book Is For
  • Requirements Orientation
  • Toward Strategic Coding
  • Resilient Software Is a Journey, Not a Destination
  • A Scale of Resilience
  • Resilient Solutions and Disaster Recovery
  • A Diagram-Driven Narrative
  • Conventions Used in This Book
  • Using Code Examples
  • Legal Notices
  • OReilly Online Learning
  • How to Contact Us
  • Acknowledgments
• I. Creating a PL/SQL Toolbox
• 1. Resilient Software and PL/SQL
  • Resilient Software
  • Examples of Resilient Systems
    • Requirements for Resilience: What Versus How
    • Motivation for Using PL/SQL: Dont Cut a Pizza with a Wrench
    • Learning Java ORM
    • Complex Data-Centric Workflows
    • Using SQL for Complex Business Logic Is a Bad Idea
  • A Cautionary Tale
    • Embracing PL/SQL Abstractions
    • Disadvantages of PL/SQL
    • There Is a Better Way
  • Gaining a Basic Understanding of PL/SQL
    • How to Read Existing or Legacy PL/SQL Code
    • Cursors
      • Implicit CURSORs
      • Explicit CURSORs
      • Back to the CURSORs example
  • Understanding the Need for a PL/SQL Learning and Development Environment
  • The Scale of Resilience
    • Capture All Errors and Exceptions: Score = 0
    • Recoverability: Score = 2
    • Observability: Score = 0
    • Modifiability: Score = 5
    • Modularity: Score = 2
    • Simplicity: Score = 5
    • Coding Conventions: Score = 5
    • Reusability: Score = 2
    • Repeatable Testing: Score = 2
    • Avoiding Common Antipatterns: Score = 0
    • Schema Evolution: Score = 0
  • Summary
• 2. Installation of a Containerized Oracle Database Instance and SQL Developer
  • A Virtualized Oracle Database Installation
  • Getting Started with Docker
  • Configuring Your Oracle Database
  • Updating the User Password
  • Getting Started with SQL Developer
  • Recap of the Basic Docker Workflow
  • Running SQL Developer
  • A Simple Schema
  • Running Some PL/SQL Code
  • Three Docker Gotchas
    • 1. Docker Case-Sensitivity
    • 2. Connecting to the Database Too Soon
    • 3. A Docker Issue Caused by the Dreaded Windows Updates
  • An Alternative to the Command-Line Use of Docker
  • Another Alternative to the Command-Line Use of Docker
  • Summary
• 3. Taking SQL Developer for a Drive
  • Fixing the Pesky PL/SQL Error
  • Installing a PL/SQL Procedure in the Database
  • Installing the Stored Procedure in the Database
  • Executing the PL/SQL Procedure
  • The Takeaway: Errors Are Good Teachers
  • Summary
• 4. Applying the Scale of Resilience to the PL/SQL Code
  • Scale of Resilience Requirement 1: Capture All Errors and Exceptions
    • The Changes for Exception Handling
    • Running the Updated PL/SQL
  • Scale of Resilience Requirement 2: Recoverability
  • Scale of Resilience Requirement 3: Observability
    • What to Do If Logging Hits an Exception?
    • Updated Schema
  • Scale of Resilience Requirement 4: Modifiability
  • Scale of Resilience Requirement 5: Modularity
    • A Logging Package
    • Creating a Logging Package
    • Integrating the Logging Facility
  • Scale of Resilience Requirement 6: Simplicity
  • Scale of Resilience Requirement 7: Coding Conventions
  • Scale of Resilience Requirement 8: Reusability
  • Scale of Resilience Requirement 9: Repeatable Testing
    • Installing utPLSQL
    • Creating a utPLSQL Unit Test in SQL Developer
  • Running a utPLSQL Unit Test
  • Scale of Resilience Requirement 10: Avoiding Common Antipatterns
    • Code That Is Too Long
    • Overly Complex Code
    • Lack of Exception/Error Handling
    • Exceptions That You Decide to Live With
    • Lack of Modularity
    • Crashes with No Known Root Cause
  • Scale of Resilience Requirement 11: Schema Evolution
  • Scale of Resilience Change Summary
  • Summary
• II. Feature-Driven Development
• 5. Calling PL/SQL
  • Two PL/SQL Integration Models
  • Calling PL/SQL Using a Job
  • Calling PL/SQL Using a Java Program
    • Setting Up a Simple Java Application
    • Running the Java Application
    • Who Owns the Java Error?
    • Reading Database Metadata
    • Some Java PL/SQL Gotchas
    • Oracle Database Password Gotcha
  • Summary
• 6. Introducing Feature-Driven PL/SQL Development
  • What Is a Feature?
    • A SQL Developer Feature
    • Examples of Features
  • Anatomy of a Feature
    • Articulating the Common Purpose of the Feature
    • Allowing the Definition of the Useful Work the Feature Can Do
    • Defining the Feature Helpers and Invocation Mechanism
    • Defining Tests to Exercise the Feature and Its Components
    • Identifying the Requirements for the Feature and Its Components
  • Reimagining the Log Procedure as a Feature
  • Considering the update_employees Procedure as a Feature
  • Testing Features or Vertical Slices
  • Business-Critical PL/SQL Code
  • Other Aspects of Features
    • Features and System Health
    • Features Versus Endpoints
  • Summary
• III. Synthesis of the PL/SQL Toolbox and Feature-Driven Development
• 7. A Process-Centric, Feature-Based Mini Project
  • Requirement 1: Define the Requirements
  • Requirement 2: Build a Basic Invoice Outline
  • Requirement 3: Create a Schema
  • Requirement 4: Test the Schema
  • Requirement 5: Feature Description
  • Requirement 6: The PL/SQL Toolbox Elements Needed to Build a Solution
  • Requirement 7: Tests
  • Requirement 8: Building a Resilient PL/SQL Solution
  • Requirement 9: Verifying the Solution by Invoking It from a High-Level Language
  • Summary
• 8. From What to How: Building Feature Components from the Specification
  • The Requirements
  • Define the Requirements
  • Build a Basic Invoice Outline
  • Create the Schema
  • A PROJECTS Table
  • Test the Schema
    • Insert Some Data and Verify the Constraints
    • Verify That an Insert into the PROJECTS Table Works as Expected
  • Feature Workflow Description
    • Create a Project Invoice Data Set
    • Invoke the Feature from Java Code
    • Invoke the PL/SQL Procedure Passing the Required Data
    • Insert a Call to the New Invoice Creation PL/SQL Procedure
    • Run the Draft PL/SQL Code First in SQL Developer
    • Insert a Row in the INVOICES Table
    • Add Two Helpers
    • Performance Note: PL/SQL Versus SQL
    • Quick Project Status Report
    • Project Feature Status Report Revisited
  • Summary
• 9. Building the Complete Feature: Final Project Integration
  • Revisiting the Scale of Resilience
  • Revisiting the Schema with Reference to the Model
  • Back to Error and Exception Management
  • Resilience Requirements Checklist
  • Recoverability
  • Observability
  • Modifiability
  • Modularity
  • Tests
  • Build a Basic Invoice Creation Tool
  • Add Logging
  • Call the Logging PL/SQL Procedure from Java Code
  • Summary
• 10. Conclusion
  • Some Takeaways
  • Avoiding Egregious Antipatterns
  • Docker: A Technology to Learn Oracle Database
  • Errors as Teachers and Reading Code
  • Legacy Code and the Scale of Resilience
  • PL/SQL and High-Level Language Integration
  • Features as Coarse-Grained Placeholders
  • Summary
• A. Troubleshooting a Native Oracle Installation
  • Installation Procedure
    • Container Versus Pluggable Databases
    • Table Structure
    • Is the Oracle Service Running?
• B. Additional Options for Oracle Database Logging
  • The sys.dbms_system.ksdwrt Procedure
  • The dbms_adr and dbms_adr_app Packages
  • The Error Stack
• Index