DATABASE / ORACLE

Oracle Database.

SQL*Plus, RAC, Data Guard, performance tuning, ASM, RMAN.

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Oracle Tutorials

11 tutorials

2 MIN READ

Inspect Oracle RAC Instances and Application Services

Connect RAC membership, database instances, and application service placement in one health check.

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3 MIN READ

Build and Validate an Oracle Physical Standby Lab

Prepare a distinct standby identity, duplicate the primary, and establish broker-managed redo apply.

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3 MIN READ

Perform and Verify a Planned Data Guard Switchover

Reverse primary and standby roles with broker validation and application-level acceptance checks.

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3 MIN READ

Refresh an Oracle Lab with Backup-Based RMAN Duplication

Create an isolated copy from disk backups and validate its identity before enabling applications.

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3 MIN READ

Plan an Oracle Patch and Verify Binary and SQL State

Check patch prerequisites and prove completion in both the software home and database.

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3 MIN READ

Turn a Legacy Oracle Upgrade Plan into a Tested Migration

Select a supported upgrade path and rehearse recovery and application acceptance.

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3 MIN READ

Create and Validate an Oracle Software Home Image

Separate software provisioning from database cloning and verify a registered destination home.

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2 MIN READ

Evaluate ASM Capacity Before Disk Group Changes

Read redundancy-aware capacity and rebalance state before resizing or replacing storage.

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2 MIN READ

Inspect Exadata Cell Health Before Maintenance

Relate cell, physical disk, cell disk, grid disk, and ASM state with read-only checks.

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3 MIN READ

Prepare and Validate an Oracle RAC Node Replacement

Inventory services and software before node replacement and verify membership afterward.

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3 MIN READ

Retire an Oracle Database After Migration Acceptance

Separate migration acceptance, retained recovery evidence, shutdown, and final database removal.

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DATABASE / ORACLE / 2 min read / Jul 03, 2026

Oracle 26ai Tablespace and Space Management: A Practical DBA Starter Guide

A DBA-friendly introduction to Oracle tablespaces, data files, autoextend, free space, temp usage, undo, and the SQL checks every Oracle admin should know.
DATABASE / ORACLE / 1 min read / Jul 03, 2026

Oracle 26ai User Management: Users, Roles, Privileges, and Safer Access

A practical Oracle DBA guide to creating users, assigning roles, managing privileges, and avoiding over-permissioned accounts.
DATABASE / ORACLE / 8 min read / Jul 03, 2026

Oracle 26ai Architecture Explained for DBAs: Instance, CDB, PDB, Memory, and Services

A practical Oracle 26ai architecture guide for DBAs, covering the instance, database files, CDB/PDB model, SGA, PGA, background processes, listener, services, and SQL*Plus verification commands.
DATABASE / ORACLE / 9 min read / Jul 03, 2026

Oracle AI Database 26ai New Features: A Practical DBA Guide

A simple but detailed DBA-friendly walkthrough of Oracle AI Database 26ai features, including AI Vector Search, JSON Relational Duality, SQL Firewall, SQL enhancements, and SQL*Plus changes.