Practical, production-ready guides on databases, cloud and automation – PostgreSQL, Oracle, SQL Server, MongoDB, CockroachDB, Kubernetes, Azure and AWS.
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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Troubleshooting
Fixing RMAN DBMS_BACKUP_RESTORE Version Errors After an Oracle Upgrade
Recently, I undertook the task of upgrading an Oracle database from version 1…
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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.
