RMAN 06059 How to Fix Expected Archived Log Not Found Error

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As an expert copywriter, I will provide you with a comprehensive article on how to fix the “RMAN-06059: expected archived log not found” error in Oracle Backups. This error message can cause panic for Oracle Database administrators, but I will guide you through the steps to resolve it and ensure a successful backup.

Introduction

Oracle Database administrators often encounter the “RMAN-06059: expected archived log not found” error message when performing backups. This error indicates that the expected archived log file is missing, leading to a backup failure. In this article, we will explore the various reasons for this error and outline step-by-step solutions to fix it.

Reasons for Backup Failures

There are several possible circumstances and reasons for backup failures in Oracle databases. Here are some common factors that can lead to the “expected archived log not found” error:

  1. Insufficient Disk Space: If the disk where the backups are stored has insufficient space, the backup operation may fail. You can check the disk usage using the “df” command in UNIX.

  2. Backups Partition Full: If the partition designated for storing backups reaches 100% capacity, it can cause backup failures. You should monitor the usage of the backup partition and ensure it is not full.

  3. Commented Backup Job: If a backup job is commented out during maintenance, it can result in backup failures. It is important to uncomment the job once the maintenance is complete.

  4. Instance or Listener Down: If the database instance or listener is down during the backup job, it will lead to backup failures. Ensure that the instance and listener are up and running before initiating the backup.

  5. Read-Only Mount Point: If the mount point where the backups are supposed to be written is in read-only mode, backups cannot be written, resulting in failure. Consult with your system engineer to resolve any read-only mode issues.

  6. Manual Removal of Backups: Sometimes, backups may be manually removed using UNIX commands like “rm.” If a backup is removed without proper authorization or accidentally, it can cause backup failures.

These are just a few examples of the circumstances and reasons for backup failures. Let’s now discuss how to trace and fix the “expected archived log not found” error.

Tracing the Error

To trace and fix the “RMAN-06059: expected archived log not found” error, you can utilize the log files generated by the backup job. Follow these steps:

  1. Locate the log files: The log files for each RMAN job can be found in the “ORA_BACKUP_HOME/autobackup/logs” directory. This location may vary depending on your environment, but you can find it using the “show parameter” command in SQL*Plus.

  2. Analyze the log files: Open the latest log file using a text editor or use the “tail” command in UNIX to view the recent entries. Look for the error message “RMAN-06059: expected archived log not found” to identify the missing log file.

Steps to Fix the Error

Once you have identified the missing log file, you can take the necessary actions to fix the error. Follow these steps:

  1. Cross-check backups: Use the RMAN command “crosscheck archivelog all” to validate the existence of all archived logs. This command will mark any missing logs as “expected.”

  2. Perform a full consistency backup: To ensure recovery consistency, immediately perform a full backup using the RMAN command “backup as backupset incremental level 0 database.” This will create a consistent backup of your database.

By following these steps, you can resolve the “RMAN-06059: expected archived log not found” error and ensure a successful backup operation.

Conclusion

The “RMAN-06059: expected archived log not found” error can be frustrating for Oracle database administrators. However, by understanding the possible reasons for this error and following the outlined steps, you can successfully fix the issue and ensure a smooth backup process. Remember, always strive for a permanent solution rather than relying on temporary fixes. With the right knowledge and actions, you can overcome any backup-related challenges in your Oracle environment. If you encounter any other issues, feel free to reach out for further assistance and solutions.