PostgreSQL DBA

PostgreSQL Internals

PostgreSQL UNDO and REDO: Configuring for Optimal Operations

To configure PostgreSQL for optimal UNDO and REDO operations, you must consider several configuration parameters that directly control the behavior of the database engine. Specifically, these parameters determine how PostgreSQL manages transaction logging and recovery, […]
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PostgreSQL Internals

PostgreSQL maintenance_work_mem: How It Is Used for VACUUM

In PostgreSQL, the maintenance_work_mem configuration parameter controls how much memory the system allocates for maintenance operations, including VACUUM. When you run a VACUUM operation, PostgreSQL sorts and processes data pages. This process helps reclaim disk […]
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PostgreSQL Performance

PostgreSQL Index Bloat: Analysis and Detection

Introduction: Index bloat can significantly impact the performance and storage efficiency of a PostgreSQL database. Therefore, to identify and understand the extent of index bloat, we can use the SQL query provided below. In this […]
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PostgreSQL Internals

How does PostgreSQL I/O Work?

In PostgreSQL, I/O (Input/Output) refers to the process of reading and writing data to and from storage devices, such as hard disks or SSDs. PostgreSQL manages I/O operations to efficiently store and retrieve data. Here’s […]