ORA-01653: Unable to Extend Table or Index – How to Fix Oracle Tablespace Space Errors
When a critical application process suddenly fails and the alert log screams this message: ORA-01653: unable to extend table <TABLE_NAME> ...
Tag: Oracle 19c
ORA-04030: Out of Process Memory in PGA – Oracle Memory Troubleshooting Guide
ORA-04030: Out of Process Memory in PGA is one of the most frequent Oracle memory-related errors DBAs face during high-load ...
ORA-01092 and ORA-39701 While Opening Database in Upgrade Mode – Fix Guide
When performing a database upgrade, one of the most common issues DBAs face is the ORA-01092: ORACLE instance terminated and ...
ORA-01555: Snapshot Too Old – Deep Dive into Undo and Query Consistency
ORA-01555 Snapshot Too Old is one of the most frustrating Oracle errors DBAs encounter, especially during long-running reports or heavy ...
ORA-01114 / ORA-01110: Cannot Add Datafile or Write to File – Causes, Fixes & Prevention (Real Oracle DBA Guide)
If you’ve worked with Oracle long enough, you’ve probably faced a moment when a database operation suddenly fails with this ...
ORA-00060: Deadlock Detected While Waiting for Resource – How to Identify and Fix It Like a Pro
You’re in the middle of a busy day, users start calling — “our app froze”, “transactions failed”, or “we’re seeing ...
ORA-28000: The Account Is Locked – Why It Happens and How to Fix
ORA-28000 The Account Is Locked is a common Oracle authentication error that appears when a database user account is automatically ...
How to Fix Broken Data Guard Log Shipping (Step-by-Step Oracle DBA Guide)
It’s 2 AM, and your monitoring system sends an alert: “Archive log gap detected between primary and standby database.” You ...
ORA-04031: Unable to Allocate Shared Memory – Causes, Fixes, and Prevention (Oracle DBA Guide)
ORA-04031: Unable to Allocate Shared Memory is one of those Oracle errors that can strike unexpectedly in production, often during ...
Mastering Oracle Database Upgrades: XPO’s Journey to 23ai with Real Application Testing and Zero Downtime
Introduction Upgrading a mission-critical Oracle Database can feel like walking a tightrope — balancing performance, compatibility, and zero downtime. For ...
