ORA-16005: Database Requires Recovery – Causes, Fix & Real Solution (Oracle 19c Guide)
If you’ve ever faced the error: ORA-16005: database requires recovery after performing a shutdown abort, you’re not alone. This is ...
Tag: Oracle DBA
ORA-39701: Database Must Be Mounted EXCLUSIVE for UPGRADE or DOWNGRADE – Causes and Solution
Upgrading an Oracle database is a common task for DBAs, especially when moving to newer database versions for performance improvements, ...
Oracle AI Database 26ai – January 2026 Release Update (23.26.1.0.0)
Patch 38743669: DBA Walkthrough, Insights, and Best Practices Oracle’s January 2026 Release Update for Oracle AI Database 26ai marks another ...
How to Upgrade Oracle Database 11.2.0.3 to 11.2.0.4 Using Data Guard Failover Method
Upgrading an Oracle database in a mission-critical environment is never just about running scripts. It’s about reducing risk, minimizing downtime, ...
Troubleshooting Slow RMAN Backup Performance – Step-by-Step Oracle DBA Guide
RMAN Backup Performance is a critical part of any Oracle DBA’s life.When backups start taking hours longer than usual — ...
ORA-00257: Archiver Error – Connect Internal Only, Until Freed (Oracle DBA Fix Guide)
It’s late in the day, your production database starts throwing errors, and your application logs fill up with this message: ...
How to Monitor and Tune Oracle Undo Tablespace (Avoid ORA-01555 & ORA-30036)
Oracle Undo Tablespace is one of the most critical — yet often neglected — components of Oracle Database.It plays a ...
Reducing Oracle CPU Usage with SQL Plan Baselines and Adaptive Query Optimization
High CPU usage is one of the most common — and often misunderstood — performance issues in Oracle Database environments.When ...
ORA-01652: Unable to Extend Temp Segment in Temporary Tablespace – Fix and Prevention Guide
ORA-01652: Unable to Extend Temp Segment in Temporary Tablespace is one of the most frequently encountered Oracle space errors, especially ...
ORA-01578 vs ORA-01110 – Data Block Corruption Case Study and Fix
ORA-01578 vs ORA-01110 is a classic Oracle error combination that instantly tells a DBA one thing:👉 Your database has a ...
