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The Database Handyman

My notes about Oracle Database, APEX, OEM Cloud Control and whatever I learn

Author: Aamir

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PostgreSQL

Improve Reliability in PostgreSQL 17: Leveraging Logical Replication Failover

January 28, 2025 Aamir

PostgreSQL 17 introduced the sync_replication_slot parameter, a game-changing feature to maintain logical replication continuity during failovers or major upgrades.

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Oracle Database Oracle Database 19c

Oracle Standby Database Parameters in PDB

January 30, 2022January 28, 2025 Aamir

In multi-tenant Active Data Guard database configuration, setting PDB parameters for standby PDB is not trivial. I discover this when we opened the Standby database

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Oracle Database Oracle Database 19c Upgrade

Upgrade Standby Database

December 6, 2020December 7, 2020 Aamir

In this post, I am sharing my notes on upgrading Oracle Standby database. Following are the steps I preformed on standby database while upgrading from

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Oracle Database Oracle Database 19c

Patch Oracle GI and DB Software Only And Create Gold Image

November 24, 2020November 23, 2020 Aamir

At work I had to install (but not fully) Oracle Software (GI and DB) for AMI (Amazon Machine Image). Downloading and unzipping software is easy

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Oracle Database SQL Query performance

Enforce Execution Plan of “hinted” SQL To “non-hinted” SQL

November 9, 2020November 29, 2020 Aamir

Sometimes a SQL performs better when given an Optimizer hint.  However in some scenarios it is not possible to modify the SQL (maybe it is

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Oracle Database 12cR1 Oracle Database 19c

Unified Auditing

November 4, 2020November 4, 2020 Aamir

In this blog post I am sharing my notes about Unified Auditing.  It shows how to enable and purge Unified Audit data. From Oracle Documents:

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Oracle Database 19c Upgrade

Before Upgrading to 19c

November 2, 2020November 2, 2020 Aamir

Make sure to checkout following Oracle Document before upgrading Grid Infrastructure / ASM and/or databases to 19c.  It will save you a lot of headache

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OEM Cloud Control

OEM 13.3 Gold Agent Image

October 30, 2020October 30, 2020 Aamir

Just a quick blog about creating Gold Agent Image in OEM 13.3. I was getting error when creating Gold Agent Image and cause wasn’t obvious. 

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Photo by Einar Storsul on Unsplash
Oracle Database 11gR2 Oracle Database 12cR1 SQL Query performance

Apply Execution Plan From Graveyard

February 21, 2017December 25, 2020 Aamir

….yes, that is correct. 🙂 You can apply an execution plan even if it has been aged out from your local Automatic Workload Repository (AWR).

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OEM Cloud Control 12c

AWR Warehouse Repository Cleanup

December 9, 2016 Aamir

Recently I was testing AWR Warehouse functionality at work and had to re-configure the AWR Repository database due to a firewall issue which caused me

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About Me

Welcome to The Database Handyman! I’m Aamir Haroon, a Senior Cloud Data Architect with over a decade of experience. I specialize in optimizing, managing, and migrating databases to ensure your data works smarter for you. With certifications such as Google Cloud’s Professional Cloud Database Engineer and AWS Certified Database – Specialty, I bring industry best practices to every project. Let’s tackle your database challenges together—reach out today!

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Recent Posts

  • Improve Reliability in PostgreSQL 17: Leveraging Logical Replication Failover January 28, 2025
  • Oracle Standby Database Parameters in PDB January 30, 2022
  • Upgrade Standby Database December 6, 2020
  • Patch Oracle GI and DB Software Only And Create Gold Image November 24, 2020
  • Enforce Execution Plan of “hinted” SQL To “non-hinted” SQL November 9, 2020
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