Error
Error Code:
ACFS-01020
Oracle Database Error ACFS-01020: Non-ACFS File System Mounted
Description
This error indicates that an Oracle ACFS (ASM Cluster File System) volume contains a mounted file system that is not ACFS. Oracle ACFS operations, such as unmounting or resizing, cannot proceed while a non-ACFS file system is mounted within its path. It typically occurs when administrative actions or automated processes lead to an incorrect mount configuration.
Error Message
This volume contains a mounted non-ACFS file system. The file system must be dismounted with 'advmutil dismount'.
Known Causes
3 known causesManual Non-ACFS Mount
A system administrator or user manually mounted a non-ACFS filesystem (e.g., ext4, XFS, NFS) onto a directory that resides on an ACFS volume.
Automated Mount Conflict
An automated process, such as an entry in /etc/fstab or a systemd unit, incorrectly mounted a non-ACFS filesystem onto a path within an ACFS volume during system startup or other operations.
Migration Inconsistency
During a system migration, reconfiguration, or recovery, a non-ACFS filesystem was inadvertently mounted or left mounted within the ACFS volume's namespace, creating a conflict.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service