Practical, production-ready guides on databases, cloud and automation – PostgreSQL, Oracle, SQL Server, MongoDB, CockroachDB, Kubernetes, Azure and AWS.
PostgreSQL
ParadeDB on Kubernetes with CloudNativePG: Deployment Runbook and a DiskPressure Incident.
This runbook documents the end-to-end deployment of a highly available ParadeDB…
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Shell Scripts
Deploying a Single-Node CockroachDB v26.2 on RHEL for Database Migrations
A single secure CockroachDB node, built by one idempotent script, is the faste…
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Security
Oracle VPD in Practice: Read-Only Support Access Without Exposing Restricted Customers
Tested on: Oracle Database 19c Enterprise Edition 19.27 | Level: Intermediate …
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Performance Tuning
Oracle Exadata Write-Back Flash Cache Explained
Oracle Exadata Write-Back Flash Cache Explained …
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Oracle
Oracle Clusterware and RAC Startup Sequence
Oracle Clusterware and RAC Startup Sequence Oracle Clusterware and RAC Star…
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PostgreSQL
Setting Up Logical Replication in PostgreSQL: A Step-by-Step Guide
Setting Up Logical Replication in PostgreSQL: A Step-by-Step Guide March 26, 20…
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- Tamilselvan Perumal
- I'm Tamilselvan Perumal, an Oracle ACE Apprentice and Senior DBA with 12+ years running Oracle, PostgreSQL, SQL Server, MongoDB and CockroachDB for Tier-1 global banks. On TechStarAdmin I share hands-on, production-tested guides on performance tuning, high availability, security and migrations.
