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How I/O cache influence PostgreSQL performance?

How I/O cache influence PostgreSQL performance? I/O cache plays an important role in PostgreSQL performance as it can greatly reduce the number of disk I/O operations that need to be performed. The PostgreSQL server uses [...]

Inspecting PostgreSQL Locks

Inspecting PostgreSQL Locks Inspecting PostgreSQL locks can be done using the pg_locks view in the system catalog. This view displays information about all currently held and awaited locks. The columns in this view include the [...]

PostgreSQL Index Maintenance and Repair

PostgreSQL Index Maintenance and Repair Index maintenance and repair are important tasks that help to keep the database running at optimal performance. In PostgreSQL, there are several methods for performing index maintenance and repair: REINDEX: [...]

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 [...]

How to tune a slow query in PostgreSQL?

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 [...]

How to Kill an PostgreSQL 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 [...]

Find When was a table last changed in PostgreSQL?

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 [...]

How to detect chained and migrated rows in PostgreSQL?

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, [...]

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