Error
Error Code:
1816
MariaDB Error 1816: InnoDB Tablespace Import Failure
Description
Error 1816 indicates that an `ALTER TABLE ... IMPORT TABLESPACE` operation has failed. This typically occurs when MariaDB is unable to successfully attach a previously exported InnoDB tablespace (.ibd file) to an existing table definition, often due to metadata mismatches, file corruption, or incorrect procedures.
Error Message
ALTER TABLE '%s' IMPORT TABLESPACE failed with error %lu : '%s'
Known Causes
4 known causesTablespace Metadata Mismatch
The internal metadata within the imported .ibd file does not match the corresponding table's definition in the MariaDB data dictionary or .frm file.
Corrupted or Incomplete .ibd File
The .ibd file being imported is damaged, partially copied, or was not fully exported from its original source, leading to read errors.
File System Permissions
The MariaDB server process lacks the necessary read or write permissions for the .ibd file or the table's data directory.
Incorrect Export Procedure
The original tablespace export process was not followed correctly (e.g., missing FLUSH TABLES FOR EXPORT), resulting in an incompatible .ibd file.
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