Oracle ORA-00340 Error: Causes and Solutions Complete Guide

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Learn to troubleshoot and fix Oracle ORA-00340 error with this complete guide, improving database administration skills

intermediate Published 9 Jun 2026
Action Steps
  1. Identify the cause of the ORA-00340 error by checking the alert log
  2. Run the 'ALTER DATABASE FLASHBACK OFF' command to disable flashback logging
  3. Configure the 'LOG_FILE_NAME_CONVERT' parameter to redirect log files
  4. Test the database by running a sample query to verify the fix
  5. Apply additional troubleshooting steps if the error persists, such as checking disk space and permissions
Who Needs to Know This

Database administrators and developers who work with Oracle databases will benefit from this guide to resolve IO errors and ensure database stability

Key Insight

💡 The ORA-00340 error is caused by IO errors processing online logs, and can be fixed by disabling flashback logging, configuring log file conversion, and troubleshooting disk space and permissions

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Key Takeaways

Learn to troubleshoot and fix Oracle ORA-00340 error with this complete guide, improving database administration skills

Full Article

ORA-00340: IO Error Processing Online Log of Thread – Causes, Fixes &...
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