https://www.pgelephant.com/videos 2026-05-30T15:00:08+00:00 daily 0.9 https://www.pgelephant.com/videos#video-05gnL7s0p8s 2026-05-30T15:00:08+00:00 weekly 0.8 https://i1.ytimg.com/vi/05gnL7s0p8s/hqdefault.jpg PostgreSQL 19 Logical Replication Sequences | ALL SEQUENCES Finally Works (Upgrade Guide) Sequences have never replicated with logical replication. Every PG upgrade meant shell scripts, setval race conditions, and praying your primary keys didn't collide. PostgreSQL 19 fixes this with ALL SEQUENCES in publications and a dedicated sequence sync worker. This video walks through the old 40-line workaround, the new syntax, hands-on setup with two databases, when sequences actually sync (three trigger points), performance benchmarks, and the complete PG 19 upgrade workflow. If you run logical replication for zero-downtime upgrades, this is the feature you've been waiting for. 🔗 Subscribe: https://youtube.com/@DrIbrarAhmed ⏱ Chapters 00:00 Intro — Sequence Replication in PG 19 01:13 What You'll Learn 01:39 The Problem: Sequences Don't Replicate 02:44 The Old Workaround (40 Lines of Shell) 03:49 Road to Sequence Replication 04:44 New Syntax: ALL SEQUENCES 05:50 The Sequence Sync Worker 06:46 When Sequences Sync (3 Triggers) 07:37 Hands-On: Setup Two Databases 08:20 Hands-On: Publication + Subscription 09:05 Hands-On: Insert Data, Verify Sequences 10:22 Why Sequences Don't Stream Continuously 11:17 Sequence States in pg_subscription_rel 11:50 Performance: How Fast Is Sequence Sync? 12:40 What Still Doesn't Work 13:37 The PG 19 Upgrade Workflow 14:15 Practical Patterns for Production 15:12 What Else Changed in Logical Replication 15:54 Summary 16:52 Subscribe & Resources #PostgreSQL #PostgreSQL19 #PG19 #LogicalReplication #Database #DBA #HighAvailability #ZeroDowntime https://www.youtube.com/embed/05gnL7s0p8s 2026-05-30T15:00:08+00:00 yes no no https://www.pgelephant.com/videos#video-osrqdvfde1E 2026-05-28T14:00:08+00:00 weekly 0.8 https://i4.ytimg.com/vi/osrqdvfde1E/hqdefault.jpg PostgreSQL Bloat: Why VACUUM Is Not Enough (DBA Cheat Sheet #4) Your PostgreSQL table is 500MB. Only 100MB contains live data. The rest is dead rows. In PostgreSQL DBA Cheat Sheet #4, I walk through VACUUM, table bloat, autovacuum tuning, dead tuples, and practical ways to detect and fix storage waste before performance starts falling apart. You will learn how PostgreSQL handles updates and deletes, why dead tuples accumulate, how VACUUM works, when VACUUM FULL becomes dangerous, and how to reduce bloat safely in production. This video covers: Dead tuples explained VACUUM vs VACUUM FULL Autovacuum internals Table bloat detection pg_stat_user_tables pgstattuple pg_repack Live demo Common DBA mistakes Production tuning Chapters: 0:00 Your table is 80% dead rows 0:30 How dead tuples happen 1:30 VACUUM vs VACUUM FULL 3:00 Detecting table bloat 4:30 Autovacuum internals 5:30 Fix patterns 6:30 Demo part 1 7:15 Demo part 2 8:00 Five bloat mistakes 9:00 VACUUM cheat sheet and summary Part of the PostgreSQL DBA Cheat Sheet library. https://www.youtube.com/embed/osrqdvfde1E 2026-05-28T14:00:08+00:00 yes no no https://www.pgelephant.com/videos#video-whMDM9pU3Zg 2026-05-26T14:00:32+00:00 weekly 0.8 https://i4.ytimg.com/vi/whMDM9pU3Zg/hqdefault.jpg PostgreSQL Slow Query Fix: 47s to 3.6ms (DBA Cheat Sheet #5 ) Last week it worked fine. The query did not change. The application did not change. The data changed. In PostgreSQL DBA Cheat Sheet #5, I walk through a practical workflow for finding, understanding, and fixing slow PostgreSQL queries in production. You will learn how to use EXPLAIN ANALYZE, pg_stat_statements, pg_stat_activity, auto_explain, and real tuning techniques to diagnose performance issues before users complain. This video covers: EXPLAIN vs EXPLAIN ANALYZE Reading execution plans Row estimates Sequential scans Join analysis Buffer reads and I/O pg_stat_statements pg_stat_activity auto_explain Slow query fix patterns Live diagnostics demo Common DBA mistakes Chapters: 0:00 This query takes 47 seconds 0:30 EXPLAIN vs EXPLAIN ANALYZE 1:30 Reading execution plans 3:00 pg_stat_statements 4:30 Live monitoring with pg_stat_activity 5:30 Common fix patterns 6:30 Demo part 1: Find the slow query 7:15 Demo part 2: 847ms to 3.6ms 8:00 Five slow query mistakes 9:00 Slow query cheat sheet and summary Part of the PostgreSQL DBA Cheat Sheet library. https://www.youtube.com/embed/whMDM9pU3Zg 2026-05-26T14:00:32+00:00 yes no no https://www.pgelephant.com/videos#video-dbRHlCezqKE 2026-05-24T14:00:16+00:00 weekly 0.8 https://i1.ytimg.com/vi/dbRHlCezqKE/hqdefault.jpg PostgreSQL Checkpoints Are Killing Performance (DBA Cheat Sheet #3) Your PostgreSQL server is slow. CPU looks fine. Memory looks fine. Queries look normal. The problem might be WAL and checkpoints. In PostgreSQL DBA Cheat Sheet #3, I walk through WAL internals, checkpoints, checkpoint tuning, monitoring, and the production mistakes that quietly hurt performance. You will learn how PostgreSQL writes data safely, why checkpoints exist, how forced checkpoints cause I/O spikes, how WAL affects recovery, and how a few settings can dramatically change performance. This video covers: WAL fundamentals Checkpoint workflow max_wal_size checkpoint_timeout checkpoint_completion_target Forced checkpoints pg_stat_checkpointer WAL and PITR Live before vs after demo Common DBA mistakes Chapters: 0:00 Your checkpoints are killing performance 0:30 What WAL does 1:30 How checkpoints work 3:00 Understanding checkpoint settings 4:30 Monitoring with pg_stat_checkpointer 5:30 WAL and recovery 6:30 Demo part 1 7:15 Demo part 2 8:00 Five checkpoint mistakes 9:00 WAL cheat sheet and summary Part of the PostgreSQL DBA Cheat Sheet library. https://www.youtube.com/embed/dbRHlCezqKE 2026-05-24T14:00:16+00:00 yes no no https://www.pgelephant.com/videos#video-LrG80oTqpbE 2026-05-23T14:00:25+00:00 weekly 0.8 https://i1.ytimg.com/vi/LrG80oTqpbE/hqdefault.jpg PostgreSQL Replication Commands That Save Production (DBA Cheat Sheet #2) Replication does not fail during setup. Replication fails during failover, lag, slots, WAL retention, and recovery. In PostgreSQL DBA Cheat Sheet #2, I walk through the replication commands every DBA should know for production systems. You will learn how PostgreSQL streaming replication works, how primary and standby servers communicate, how to monitor replication health, how failover and promotion work, and which commands help diagnose problems before users notice them. This video covers: Streaming replication Physical vs logical replication pg_basebackup setup Replication monitoring pg_stat_replication Replication lag checks Promote standby servers Replication slots Failover basics Live demo and troubleshooting Common DBA mistakes Chapters: 0:00 Your primary just died 0:30 Physical vs logical replication 1:30 Replication architecture 3:00 Setup commands 4:30 Monitoring replication health 5:30 Replication slots explained 6:30 Live demo part 1 7:15 Live demo part 2 8:00 Common replication mistakes 9:00 Replication cheat sheet and summary Part of the PostgreSQL DBA Cheat Sheet library. https://www.youtube.com/embed/LrG80oTqpbE 2026-05-23T14:00:25+00:00 yes no no https://www.pgelephant.com/videos#video-edqbiSkZp_k 2026-05-22T15:28:33+00:00 weekly 0.8 https://i2.ytimg.com/vi/edqbiSkZp_k/hqdefault.jpg PostgreSQL Backup Commands Before Disaster (DBA Cheat Sheet #1) PostgreSQL backups fail when DBAs treat them as a command, not a recovery plan. In this first PostgreSQL DBA Cheat Sheet video, I walk through the backup commands every DBA should know, including pg_dump, pg_restore, pg_basebackup, WAL archiving, and restore validation. You will learn how logical backups differ from physical backups, when to use each method, how to verify a backup, how restore testing prevents disaster, and why a backup only matters when recovery works. Chapters: 0:00 PostgreSQL backup disaster 0:30 Logical vs physical backups 1:30 pg_dump commands 3:00 pg_restore commands 4:30 pg_basebackup 6:00 WAL archiving basics 7:00 Live backup demo 7:45 Restore validation 8:30 Backup mistakes DBAs make 9:30 Final backup cheat sheet This video is part of the PostgreSQL DBA Cheat Sheet library. https://www.youtube.com/embed/edqbiSkZp_k 2026-05-22T15:28:33+00:00 yes no no https://www.pgelephant.com/videos#video-L_zB0yjyij4 2026-05-21T14:00:06+00:00 weekly 0.8 https://i1.ytimg.com/vi/L_zB0yjyij4/hqdefault.jpg PostgreSQL Major Upgrade: 3 Safe Paths Without Breaking Production PostgreSQL major version upgrades do not usually fail at install. PostgreSQL major version upgrades succeed long before the maintenance window starts. In this production-focused guide, Dr. Ibrar Ahmed walks through a practical PostgreSQL upgrade playbook that covers pg_upgrade, logical replication, and Zodan/Spock active-active workflows. You will learn how to choose the right upgrade path, run pg_upgrade checks, verify extension compatibility, handle collation and ICU risks, plan disk and WAL capacity, manage publications and subscriptions, avoid replica identity failures, control replication slot WAL retention, fix sequence drift, prepare DNS cutover, define rollback triggers, and validate production after traffic moves. This video gives DBAs, developers, and platform engineers a clear upgrade checklist built around rehearsal, validation, rollback readiness, and safer PostgreSQL production operations. https://www.youtube.com/embed/L_zB0yjyij4 2026-05-21T14:00:06+00:00 yes no no https://www.pgelephant.com/videos#video-AbK1McWAdI4 2026-05-20T20:12:37+00:00 weekly 0.8 https://i2.ytimg.com/vi/AbK1McWAdI4/hqdefault.jpg PostgreSQL PITR Learn PostgreSQL, database security, cybersecurity, and real-world technical workflows through practical tutorials. In this video, we cover PostgreSQL concepts, secure database practices, administration, performance, replication, high availability, and production-ready engineering patterns. Topics on this channel include: - PostgreSQL security and hardening - Database administration and DBA workflows - SQL, query tuning, and performance optimization - Logical replication and high availability - Backup, recovery, and disaster recovery - Cybersecurity concepts for databases - Linux, DevOps, and production systems - Open-source database technologies Subscribe for more PostgreSQL, cybersecurity, and technical tutorials. #PostgreSQL #DatabaseSecurity #CyberSecurity #SQL #DatabaseAdministration https://www.youtube.com/embed/AbK1McWAdI4 2026-05-20T20:12:37+00:00 yes no no https://www.pgelephant.com/videos#video-_zsCDTGvQZQ 2026-05-20T12:27:16+00:00 weekly 0.8 https://i4.ytimg.com/vi/_zsCDTGvQZQ/hqdefault.jpg PostgreSQL Slow Queries: Read EXPLAIN ANALYZE Like a DBA PostgreSQL slow queries are not solved by guessing indexes. In this video, I show you how to read EXPLAIN ANALYZE like a production DBA. You will learn how to find bad row estimates, wrong join types, buffer reads, disk sorts, missing indexes, and the real root cause behind a slow query. We start with a real slow query example, read the bad execution plan, identify the expensive nodes, compare estimated rows with actual rows, and then fix the query step by step. You will learn: How to read EXPLAIN ANALYZE bottom-up The difference between EXPLAIN and EXPLAIN ANALYZE Why estimated rows vs actual rows matters How Nested Loop, Hash Join, and Merge Join affect performance How to use BUFFERS to separate I/O problems from CPU problems How stale statistics break query plans When ANALYZE fixes the problem When indexes help, and when they do not How to use pg_stat_statements and pg_stat_activity A practical slow query checklist for production PostgreSQL Chapters: 00:00 PostgreSQL slow query problem 00:30 The diagnostic path 01:10 The slow query 02:00 Reading the bad EXPLAIN ANALYZE plan 03:30 Bad row estimates 05:00 Wrong join type 06:30 Buffer reads and I/O 08:00 Sort spills and work_mem 09:30 EXPLAIN vs EXPLAIN ANALYZE 11:00 Reading plans bottom-up 12:30 Seq Scan, Index Scan, Bitmap Heap Scan 15:00 Nested Loop vs Hash Join 17:00 Fixing stale statistics with ANALYZE 19:00 Before and after plan comparison 21:00 Missing indexes and wrong indexes 23:00 pg_stat_statements and pg_stat_activity 25:00 DBA slow query checklist https://www.youtube.com/embed/_zsCDTGvQZQ 2026-05-20T12:27:16+00:00 yes no no https://www.pgelephant.com/videos#video-86AwvynvESk 2026-05-19T15:46:35+00:00 weekly 0.8 https://i1.ytimg.com/vi/86AwvynvESk/hqdefault.jpg MySQL to PostgreSQL Migration Without Breaking Production Migrating from MySQL to PostgreSQL is not only a data copy. It is a production journey. In this video, I walk through a complete MySQL to PostgreSQL migration playbook, from assessment and schema conversion to data movement, validation, tuning, cutover, and post-migration operations. You will learn how to handle: MySQL vs PostgreSQL architecture differences Data type mapping UNSIGNED integer problems AUTO_INCREMENT to IDENTITY MySQL SQL syntax changes Stored procedure conversion Trigger conversion GROUP_CONCAT to string_agg DATE_FORMAT to to_char JSON to JSONB Index conversion pgLoader migration AWS DMS migration DDL conversion ON UPDATE CURRENT_TIMESTAMP Post-migration validation PostgreSQL tuning PgBouncer EXPLAIN ANALYZE Autovacuum Cutover planning Rollback strategy Common post-migration errors Application and ORM changes PostgreSQL extensions MySQL-specific gotchas This is a practical production guide for developers, DBAs, architects, and engineering teams planning a real MySQL to PostgreSQL migration. Chapters: 0:00 MySQL to PostgreSQL migration guide 1:00 Architecture and data type differences 3:30 SQL and code conversion 8:00 Advanced PostgreSQL features 11:00 Migration execution with pgLoader and AWS DMS 13:30 Validation and PostgreSQL tuning 16:00 Cutover and operations 18:00 Migration checklist and quick reference Key topics covered: MySQL to PostgreSQL migration pgLoader MySQL to PostgreSQL AWS DMS MySQL to PostgreSQL PostgreSQL migration checklist MySQL data type mapping PostgreSQL MySQL AUTO_INCREMENT PostgreSQL IDENTITY MySQL GROUP_CONCAT PostgreSQL string_agg MySQL JSON PostgreSQL JSONB PostgreSQL cutover plan PostgreSQL migration validation Subscribe for practical PostgreSQL deep dives: https://www.youtube.com/@DrIbrarAhmed #PostgreSQL #MySQL #DatabaseMigration https://www.youtube.com/embed/86AwvynvESk 2026-05-19T15:46:35+00:00 yes no no https://www.pgelephant.com/videos#video-E6Pf_UxrngM 2026-05-14T22:24:23+00:00 weekly 0.8 https://i2.ytimg.com/vi/E6Pf_UxrngM/hqdefault.jpg Oracle to PostgreSQL Migration: The Complete DBA Playbook Oracle to PostgreSQL migration is not just a schema conversion. It is a full production journey. You must handle data types, sequences, PL/SQL, packages, triggers, cursors, partitioning, indexing, query tuning, validation, cutover, rollback, and post-migration operations. In this video, I walk through a complete Oracle to PostgreSQL migration playbook built for DBAs, engineers, architects, and teams planning a serious migration. You will learn: How to assess an Oracle database before migration How Oracle objects map to PostgreSQL How to convert schema, data types, sequences, and indexes How to handle PL/SQL, packages, procedures, functions, and triggers How to choose tools such as Ora2Pg, pgLoader, AWS SCT, AWS DMS, and EDB tools How to validate data after migration How to tune PostgreSQL after cutover How to avoid common migration failures How to plan rollback and production go-live This video is practical. It includes real migration steps, real conversion patterns, common errors, and DBA-level guidance. If your company wants to reduce Oracle licensing costs, avoid vendor lock-in, modernize database architecture, or move toward open-source PostgreSQL, this is the migration guide to watch first. #Oracle #PostgreSQL #DatabaseMigration #OracleToPostgreSQL #Postgres #DBA #DatabaseAdministration #SQL #PLSQL #PostgreSQLDBA #Ora2Pg #pgLoader #AWSDMS #AWSDatabaseMigrationService #AWSSCT #EDB #OpenSourceDatabase #DatabaseEngineering #DataMigration #DatabasePerformance #DatabaseTuning #EnterpriseDatabase #CloudMigration #DrIbrarAhmed https://www.youtube.com/embed/E6Pf_UxrngM 2026-05-14T22:24:23+00:00 yes no no https://www.pgelephant.com/videos#video-vPsJJAjekpg 2026-05-13T12:46:12+00:00 weekly 0.8 https://i3.ytimg.com/vi/vPsJJAjekpg/hqdefault.jpg PostgreSQL Security Hardening: Stop Real Production Attacks One weak PostgreSQL login can become a full database breach if roles, network access, and privileges are not locked down. They begin with one credential. One service account. One forgotten admin host. One weak pg_hba.conf rule. One role with more privilege than it needs. One superuser account is used every day. After that, the attacker moves from the app tier to the database, from the database to replicas, and from replicas to backups, and suddenly, PostgreSQL is no longer a system. It is the prize room. Lovely work, humans. In this deep dive, Dr. Ibrar Ahmed explains how to harden PostgreSQL production clusters against modern security threats using a practical, step-by-step approach. You will learn: How attackers move toward PostgreSQL clusters Why firewalls are not enough How to harden pg_hba.conf How to enforce TLS and mTLS Why md5 and trust must be removed How to stop daily superuser usage How to design safer PostgreSQL roles How Row-Level Security protects sensitive data How to audit dangerous SQL activity How to monitor suspicious OS-level behavior How to protect backups, WAL archives, and replicas How to build a PostgreSQL incident response runbook How to follow a 30-day hardening plan This video covers PostgreSQL security from the network layer to SQL permissions, audit logging, backup protection, replication security, secrets management, and incident response. This is not theory. It is a production hardening runbook. Subscribe for more PostgreSQL deep dives, database security, performance tuning, high availability, replication, disaster recovery, and advanced database engineering. Hashtags: #PostgreSQL #Postgres #PostgreSQLSecurity #DatabaseSecurity #CyberSecurity #SecurityHardening #PostgreSQLDBA #DBA #DatabaseAdministrator #DatabaseEngineering #ProductionDatabase #DatabaseReliability #pg_hba #mTLS #TLS #SCRAM #RowLevelSecurity #RLS #PostgreSQLRLS #DatabaseAudit #pgaudit #WAL #PostgreSQLReplication #HighAvailability #DevOps #SRE #Linux #OpenSourceDatabase #SQL #DataSecurity #IncidentResponse https://www.youtube.com/embed/vPsJJAjekpg 2026-05-13T12:46:12+00:00 yes no no https://www.pgelephant.com/videos#video-wVwWRAA2XTk 2026-05-12T12:24:49+00:00 weekly 0.8 https://i4.ytimg.com/vi/wVwWRAA2XTk/hqdefault.jpg PostgreSQL Won the Database War, Here’s Why Engineers Trust It PostgreSQL did not win by hype. It won by earning engineers’ trust in real production systems. In this deep dive, we look at how PostgreSQL became the default choice for serious production systems: from its Berkeley research roots, to ACID correctness, MVCC, write-ahead logging, crash recovery, extensions, cloud adoption, and the rise of pgvector for AI applications. We cover: - Why PostgreSQL became trusted in production - ACID, MVCC, WAL, and crash recovery - How extensions like PostGIS, TimescaleDB, Citus, and pgvector changed the game - Why every major cloud platform supports PostgreSQL - How PostgreSQL became relevant again in the AI era If you care about databases, reliability, backend engineering, or AI infrastructure, this is the PostgreSQL story worth understanding. Subscribe for more deep dives on PostgreSQL, databases, performance, and production engineering. https://www.youtube.com/embed/wVwWRAA2XTk 2026-05-12T12:24:49+00:00 yes no no https://www.pgelephant.com/videos#video-FfeAanOwoRg 2026-05-10T20:27:45+00:00 weekly 0.8 https://i3.ytimg.com/vi/FfeAanOwoRg/hqdefault.jpg PostgreSQL Anthem, A Song for the Database We Love This is not the official PostgreSQL anthem. I created this song for my love of PostgreSQL, the database that has powered serious production systems, developers, DBAs, startups, enterprises, and open-source communities for decades. https://www.youtube.com/embed/FfeAanOwoRg 2026-05-10T20:27:45+00:00 yes no no https://www.pgelephant.com/videos#video-QGnetPooKxY 2026-05-10T20:20:32+00:00 weekly 0.8 https://i2.ytimg.com/vi/QGnetPooKxY/hqdefault.jpg PostgreSQL Anthem: A Song for the Database We Love A tribute song for PostgreSQL developers, DBAs, engineers, and the open-source database community. This is not the official PostgreSQL anthem. I created this song for my love of PostgreSQL, the database that has powered serious production systems, developers, DBAs, startups, enterprises, and open-source communities for decades. PostgreSQL is more than a database engine. It is ACID transactions. It is WAL. It is MVCC. It is extensions. It is reliability. It is a community. It is the reason many of us trust open-source databases in production. This anthem is a fun tribute to PostgreSQL, created for developers, DBAs, architects, open-source fans, and everyone who has ever tuned a query, fixed replication, restored from backup, or watched EXPLAIN ANALYZE like it owed them money. Again, this is not an official PostgreSQL song or official PostgreSQL project content. It is an independent fan-made tribute created by Dr. Ibrar Ahmed for love of Postgres. Subscribe for more PostgreSQL videos, performance tuning, internals, replication, high availability, disaster recovery, and database engineering content. Hashtags: #PostgreSQL #Postgres #PostgreSQLAnthem #PostgresAnthem #DatabaseSong #SQL #OpenSource #OpenSourceDatabase #DatabaseEngineering #DBA #PostgreSQLDBA #PostgresDBA #DatabaseAdministrator #DatabaseCommunity #DatabaseInternals #MVCC #WAL #ACID #Replication #HighAvailability #DatabaseReliability #DataEngineering #Developers #DevOps #SRE #TechSong #ProgrammingSong #DatabaseMusic #DrIbrarAhmed https://www.youtube.com/embed/QGnetPooKxY 2026-05-10T20:20:32+00:00 yes no no