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Troubleshooting PostgreSQL

Troubleshooting PostgreSQL

By : Hans-Jürgen Schönig
4.2 (5)
Buy this Book
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Troubleshooting PostgreSQL

Troubleshooting PostgreSQL

4.2 (5)
By: Hans-Jürgen Schönig
Buy this Book

Overview of this book

If you are a database administrator looking for solutions to common PostgreSQL problems, this is the book for you. The book is suitable for people with intermediate and professional expertise.
Table of Contents (12 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
Lock Free Chapter
1
1. Installing PostgreSQL
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1. Installing PostgreSQL
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Deciding on a version number
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Methods of installing PostgreSQL
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Memory and kernel issues
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Adding checksums to a database instance
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Preventing encoding-related issues
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Avoiding template pollution
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Summary
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2. Creating Data Structures
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2. Creating Data Structures
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Grouping columns the right way
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Deciding on data types and structure
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Deciding on normalization
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Summary
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3. Handling Indexes
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3. Handling Indexes
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Understanding indexes in PostgreSQL
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Avoiding trouble with indexes
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Solving common problems
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Handling LIKE queries
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Finding good matches
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Fixing full-text search
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Summary
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4. Reading Data Efficiently and Correctly
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4. Reading Data Efficiently and Correctly
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Understanding the power of NULL
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Fixing disastrous joins
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Reading large amounts of data
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Understanding prepared queries
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Summary
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5. Getting Transactions and Locking Right
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5. Getting Transactions and Locking Right
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The PostgreSQL transaction model
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Transaction isolation
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Inspecting locks
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Summary
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6. Writing Proper Procedures
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6. Writing Proper Procedures
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Choosing the right language
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Managing procedures and transactions
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Procedures and indexing
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Understanding memory
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Summary
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7. PostgreSQL Monitoring
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7. PostgreSQL Monitoring
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Checking the overall database behavior
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Detecting I/O bottlenecks
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Checking for conflicts
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Chasing down slow queries
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Inspecting internal information
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Integrating with external tools
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Alternative tools
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Summary
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8. Fixing Backups and Replication
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8. Fixing Backups and Replication
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Using pg_dump
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Managing point-in-time recovery
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Making use of asynchronous replication
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Switching to synchronous replication
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Handling timelines
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Summary
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9. Handling Hardware and Software Disasters
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9. Handling Hardware and Software Disasters
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Checksums – preventing silent corruption
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Zeroing out damaged pages
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Dealing with index corruption
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Dumping individual pages
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Resetting the transaction log
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Power-out-related issues
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Summary
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10. A Standard Approach to Troubleshooting
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10. A Standard Approach to Troubleshooting
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Getting an overview of the problem
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Attacking low performance
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Fixing common replication issues
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Summary
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Index
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Index

Chapter 1. Installing PostgreSQL

In this chapter, we will cover what can go wrong during the installation process and what can be done to avoid those things from happening. At the end of the chapter, you should be able to avoid all of the pitfalls, traps, and dangers you might face during the setup process.

For this chapter, I have compiled some of the core problems that I have seen over the years, as follows:

  • Deciding on a version during installation
  • Memory and kernel issues
  • Preventing problems by adding checksums to your database instance
  • Wrong encodings and subsequent import errors
  • Polluted template databases
  • Killing the postmaster badly

At the end of the chapter, you should be able to install PostgreSQL and protect yourself against the most common issues popping up immediately after installation.

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