Oracle Database 23ai training link
Oracle Database 23ai - Get Started
Oracle Database 23ai download link
https://www.oracle.com/database/free/get-started/
Oracle Database 23ai Proactive Patch Information (Doc ID 3053981.1)
- Upgrade Oracle Database using AutoUpgrade
- Convert to multitenant architecture using AutoUpgrade
- Convert to multitenant architecture using Refreshable Clone PDBs
- Convert to multitenant architecture using Data Pump
- Ensure performance stability
- Capture workload information
- Detect regressing statements using SQL Performance Analyzer
- Fix bad plans using SQL Tuning Advisor
- Avoid plan regressions with SQL Plan Management
- Restore failed upgrade
- Downgrade a pluggable database