No Redo Logs = Data Loss | Oracle DBA Must Know This скачать в хорошем качестве

No Redo Logs = Data Loss | Oracle DBA Must Know This

Redo log files are the backbone of Oracle Database recovery — and if you don’t understand them, you cannot call yourself an Oracle DBA. In Day 7 of the 100-Day Oracle DBA Challenge, we break down Redo Log Files in Oracle in a clear, beginner-friendly way while explaining the internal behavior every professional DBA must understand. In this video, you will learn: What redo log files are and why Oracle depends on them How Oracle guarantees durability using the redo buffer and redo logs The difference between online redo logs and archived redo logs How redo log groups and redo log members work The role of LGWR and ARCn background processes What happens during redo log switching Best practices for redo log sizing and multiplexing How redo logs protect committed transactions during crashes Redo logs record every database change — inserts, updates, deletes, and structural operations. Oracle uses them to recover committed transactions during instance failure, system crashes, and media failures. Without properly configured redo logs, recovery becomes impossible. This lesson is essential if you are: Learning Oracle Database from scratch Preparing for an Oracle DBA role or certification Transitioning from MySQL, SQL Server, or PostgreSQL Improving your backup, recovery, and performance tuning skills Redo logs are often called the heartbeat of Oracle recovery. If they are sized, multiplexed, and monitored correctly, your database survives failures. If they are ignored, data loss becomes a real risk. 👍 Like the video if it helped you 💬 Comment with the redo log concept you found most confusing or interesting 🔔 Subscribe to follow the complete 100-Day Oracle DBA Challenge Day 7 Topic: Oracle Redo Log Files Explained Series: 100-Day Oracle DBA Challenge Level: Beginner to Intermediate Oracle DBA