Error
Error Code:
ACFS-07189
Oracle Database Error ACFS-07189: ACFS Map_File Corruption
Description
This error indicates a critical inconsistency or corruption within the Oracle ACFS (ASM Cluster File System) metadata. Specifically, it means the `Map_File` structure, which tracks logical-to-physical block mappings, contains an incorrect disk offset value. This typically occurs during file system operations when ACFS attempts to access or validate file data.
Error Message
Map_File has entry with incorrect _ActualDiskOffset value\n found: string minimum: string \nfor file:\n string
Known Causes
4 known causesACFS Metadata Corruption
The internal metadata structure of the ACFS file system, specifically the `Map_File` entries responsible for block mapping, has become corrupted or inconsistent.
Underlying Storage Subsystem Issues
Problems with physical storage devices, ASM disk groups, or I/O pathways can lead to data corruption that propagates to the ACFS metadata layer.
Improper System Shutdown or Power Failure
Abrupt power loss or uncontrolled system reboots can prevent ACFS from properly synchronizing its metadata to disk, leading to inconsistencies upon restart.
Software Defects or Incompatibilities
Rarely, a bug within Oracle ACFS software itself or an incompatibility with other system components could lead to incorrect metadata handling.
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