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Analyzing PostgreSQL with strace

Analyzing PostgreSQL with strace strace is a powerful Linux tool that allows you to trace system calls and signals of a running process. It can be used to analyze the behavior of a PostgreSQL server [...]

Tuning Linux for PostgreSQL

Tuning Linux for PostgreSQL Tuning Linux for PostgreSQL performance can involve several steps. Here are some general steps to take: Optimize kernel parameters: Make sure the kernel is configured for optimal performance for PostgreSQL. This [...]

PostgreSQL Slow Query: How to Tune It

How to tune a slow query in PostgreSQL? Tuning a slow query in PostgreSQL can involve several steps. Here are some general steps to take: Identify the slow query: Use the pg_stat_activity view to see [...]

How expensive SQLs can impact PostgreSQL Performance?

How expensive SQLs can impact PostgreSQL Performance? Expensive SQLs can have a significant impact on PostgreSQL performance, as they consume a lot of resources and can slow down the entire system. Here are a few [...]

PostgreSQL Kill: How to Kill a Process from Inside PostgreSQL

How to Kill an PostgreSQL process from inside PostgreSQL? In PostgreSQL, you can use the pg_terminate_backend() function to kill a specific process. This function takes a single argument, the process ID of the process you [...]

PostgreSQL Table Change: Find When a Table Was Last Changed

Find When was a table last changed in PostgreSQL? In PostgreSQL, you can use the pg_class system catalog table to determine when a table was last changed. The pg_class table contains metadata about all tables [...]

PostgreSQL Chained Rows: How to Detect Chained and Migrated Rows

How do you think you could detect chained and migrated rows in PostgreSQL? Chained and migrated rows occur in PostgreSQL when rows are updated and cannot fit in their original block due to space constraints, [...]

PostgreSQL Multi-Master Replication: Step-by-Step for High Availability (PostgreSQL 15)

Step-by-step PostgreSQL multi-master Replication for High Availability Here is a general step-by-step guide for setting up PostgreSQL multi-master replication in PostgreSQL 15 for high availability: Step 1: Prepare the master nodes: Make sure that the […]

PostgreSQL Least Recently Used (LRU) List: How It Is Managed

How Least Recently Used (LRU) list is managed in PostgreSQL? In PostgreSQL, the least recently used (LRU) list is a mechanism used to manage the buffer cache. The buffer cache is a memory area used [...]

How PostgreSQL Vacuum works?

How does PostgreSQL Vacuum work? In PostgreSQL, the vacuum process is responsible for reclaiming space from deleted or updated rows in tables. The vacuum process works by scanning the table and removing any rows that [...]

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