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Dmitry Romanoff

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How to reset pg_stat_database statistics for all DBs on a PostgreSQL Server?

How to reset pg_stat_database statistics for all DBs on a PostgreSQL Server?

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Comments
2 min read

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How to check the number of queries per second (QPS) on the PostgreSQL DB instance?

How to check the number of queries per second (QPS) on the PostgreSQL DB instance?

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1 min read
How to check the number of transactions per second (TPS) for the given PostgreSQL DB instance?

How to check the number of transactions per second (TPS) for the given PostgreSQL DB instance?

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2 min read
PostgreSQL: pg_stat_reset() is not resetting all statistics counters.

PostgreSQL: pg_stat_reset() is not resetting all statistics counters.

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1 min read
How do you check temporary file generation for each PostgreSQL DB on the Server?

How do you check temporary file generation for each PostgreSQL DB on the Server?

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1 min read
PostgreSQL: script to connect to DB, and get tables, their records number and size.

PostgreSQL: script to connect to DB, and get tables, their records number and size.

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MySQL: ERROR 1227 (42000) at line 27: Access denied; you need (at least one of) the SUPER privilege(s) for this operation

MySQL: ERROR 1227 (42000) at line 27: Access denied; you need (at least one of) the SUPER privilege(s) for this operation

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1 min read
Python: How to check telnet status?

Python: How to check telnet status?

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1 min read
Postgres. How to check the top queries that use temporary files?

Postgres. How to check the top queries that use temporary files?

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1 min read
PostgreSQL. How to list the most IOPs-intensive queries?

PostgreSQL. How to list the most IOPs-intensive queries?

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1 min read
Postgres: DB parameters configuration on the level of User / Database

Postgres: DB parameters configuration on the level of User / Database

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1 min read
Postgres Order By: the resultset is sorted differently

Postgres Order By: the resultset is sorted differently

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1 min read
PostgreSQL DB Server. The read-only user is able to create and own tables.

PostgreSQL DB Server. The read-only user is able to create and own tables.

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2 min read
How to estimate the number of rows and size of tables in Postgres DB?

How to estimate the number of rows and size of tables in Postgres DB?

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1 min read
How to limit the number of connections on the level of the DB user / Database in the Postgres Server?

How to limit the number of connections on the level of the DB user / Database in the Postgres Server?

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1 min read
ERROR: permission denied to create extension "pg_trgm". HINT: Must be part of the azure_pg_admin role to create this extension.

ERROR: permission denied to create extension "pg_trgm". HINT: Must be part of the azure_pg_admin role to create this extension.

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2 min read
How to know which DB objects caused a high DB storage growth rate?

How to know which DB objects caused a high DB storage growth rate?

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3 min read
How to check Postgres VACUUM process progress?

How to check Postgres VACUUM process progress?

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1 min read
Postgres. CREATE INDEX concurrently <index_name> ON <table_name> ... takes too long.

Postgres. CREATE INDEX concurrently <index_name> ON <table_name> ... takes too long.

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1 min read
How to list and set tags for AWS RDS using CLI?

How to list and set tags for AWS RDS using CLI?

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1 min read
How to create read-only user in PostgreSQL DB?

How to create read-only user in PostgreSQL DB?

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1 min read
How to generate HTML report based on PostgreSQL queries?

How to generate HTML report based on PostgreSQL queries?

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1 min read
PostgreSQL DB Indexes Maintenance Script

PostgreSQL DB Indexes Maintenance Script

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7 min read
PostgreSQL version 15+ ERROR: permission denied for schema public

PostgreSQL version 15+ ERROR: permission denied for schema public

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1 min read
Using PgBouncer to improve performance and reduce the load on PostgreSQL

Using PgBouncer to improve performance and reduce the load on PostgreSQL

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7 min read
How to parse Postgres log file and to print all the errors along with a specified number of lines before and after each error?

How to parse Postgres log file and to print all the errors along with a specified number of lines before and after each error?

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1 min read
How to download AWS RDS Postgres log files?

How to download AWS RDS Postgres log files?

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1 min read
My lecture at the Stockholm Tech Show 2023.

My lecture at the Stockholm Tech Show 2023.

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PgBouncer. Reduce the load on the PostgreSQL server and improve performance.

PgBouncer. Reduce the load on the PostgreSQL server and improve performance.

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6 min read
How to measure performance of PostgreSQL Database Server(s)?

How to measure performance of PostgreSQL Database Server(s)?

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5 min read
Video of a conference talk about the most useful SQL queries to investigate high CPU utilization, delivered at Citus Con 2023

Video of a conference talk about the most useful SQL queries to investigate high CPU utilization, delivered at Citus Con 2023

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Don't miss out on #CitusCon 2023 - the virtual event for Postgres developers!

Don't miss out on #CitusCon 2023 - the virtual event for Postgres developers!

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How to deploy a high availability (HA) Postgres cluster in Kubernetes?

How to deploy a high availability (HA) Postgres cluster in Kubernetes?

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Join my talk @ Citus Con 2023 [ Microsoft ] - Troubleshooting High CPU Utilization in PostgreSQL Databases

Join my talk @ Citus Con 2023 [ Microsoft ] - Troubleshooting High CPU Utilization in PostgreSQL Databases

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1 min read
Excalidraw: the tool for creating diagrams and sketches.

Excalidraw: the tool for creating diagrams and sketches.

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How to add a caption to an image using Python code?

How to add a caption to an image using Python code?

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How to copy a table from one PostgreSQL database to another?

How to copy a table from one PostgreSQL database to another?

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How to write bash script to insert the records from file my_records.txt into PostgreSQL DB table?

How to write bash script to insert the records from file my_records.txt into PostgreSQL DB table?

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How to create video file from images and music track?

How to create video file from images and music track?

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3 min read
Write bash script to append the file with 100 more similar records.

Write bash script to append the file with 100 more similar records.

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2 min read
What is in common between DevOps and composing a music?

What is in common between DevOps and composing a music?

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1 min read
How to deploy a Python application in Kubernetes?

How to deploy a Python application in Kubernetes?

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3 min read
How to push a Docker image to a Docker registry?

How to push a Docker image to a Docker registry?

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1 min read
Bash script to find the difference between an epoch timestamp and the current date.

Bash script to find the difference between an epoch timestamp and the current date.

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How to check fragmentation of tables and indexes in PostgreSQL?

How to check fragmentation of tables and indexes in PostgreSQL?

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PostgreSQL. How to calculate the distance between two cities based on their corresponding GPS data?

PostgreSQL. How to calculate the distance between two cities based on their corresponding GPS data?

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Does DevOps include Database management and administration?

Does DevOps include Database management and administration?

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How to check the memory usage of a pod in Kubernetes?

How to check the memory usage of a pod in Kubernetes?

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lftp – move files between different Linux remote machines quickly and reliable

lftp – move files between different Linux remote machines quickly and reliable

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How to compose SQL queries based on values from CSV file?

How to compose SQL queries based on values from CSV file?

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How to check tables fragmentation in Oracle DB?

How to check tables fragmentation in Oracle DB?

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How to run psql script in the background?

How to run psql script in the background?

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How to limit the number of connections per DB in the PostgreSQL?

How to limit the number of connections per DB in the PostgreSQL?

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1 min read
How to find PostgreSQL DB growth rate?

How to find PostgreSQL DB growth rate?

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How to compare two PostgreSQL databases to find differences in tables, indexes, functions?

How to compare two PostgreSQL databases to find differences in tables, indexes, functions?

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7 min read
PostgreSQL parameter log_statement

PostgreSQL parameter log_statement

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4 min read
PostgreSQL parameter log_min_duration_statement

PostgreSQL parameter log_min_duration_statement

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PostgreSQL parameter statement_timeout

PostgreSQL parameter statement_timeout

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How PostgreSQL database tables rows are allocated?

How PostgreSQL database tables rows are allocated?

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14 min read
PostgreSQL database INSERT multiple rows: how the number of rows impacts timing?

PostgreSQL database INSERT multiple rows: how the number of rows impacts timing?

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