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Description

This error indicates that MariaDB cannot access or process data within a specified table because it is either physically missing, has become structurally damaged, or contains invalid entries. It typically occurs during database operations like SELECT, INSERT, UPDATE, or DELETE, preventing the successful completion of the requested task.

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Error Message

Operation cannot be performed. The table '%s.%s' is missing, corrupt or contains bad data.

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Known Causes

4 known causes

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Underlying File System Corruption

Problems with the disk or file system where MariaDB stores its data files can lead to tables becoming inaccessible or corrupted, often due to hardware failures or unexpected system shutdowns.

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Abnormal Server Shutdown

If the MariaDB server crashes or is shut down improperly during a write operation, table files might not be fully synchronized, leaving them in an inconsistent or corrupt state.

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Invalid Data Entries

The table might contain data that violates its own structure or constraints, leading to internal consistency errors that prevent MariaDB from processing it correctly.

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Missing Table Files

The physical table files (e.g., .frm, .ibd) might have been accidentally deleted, moved, or have incorrect permissions, making them unreachable by the MariaDB server.

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Solutions

4 solutions available

1. Check for Table Existence and Basic Integrity easy

Verify the table exists and perform a quick check using SHOW TABLES and CHECK TABLE.

1

Connect to your MariaDB instance using the command-line client.

mysql -u your_user -p

2

Select the database where the table is located.

USE your_database_name;

3

List all tables in the database to confirm if the table is actually missing.

SHOW TABLES LIKE 'your_table_name';

4

If the table is listed, run a basic integrity check.

CHECK TABLE your_table_name;

5

Examine the output of CHECK TABLE. If it reports errors, proceed to more advanced repair options.

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2. Repair InnoDB Table with ALTER TABLE REBUILD medium

Attempt to rebuild an InnoDB table to fix corruption issues.

1

Connect to your MariaDB instance.

mysql -u your_user -p

2

Select the database containing the corrupted table.

USE your_database_name;

3

Attempt to rebuild the table. This can sometimes resolve minor corruption.

ALTER TABLE your_table_name ENGINE=InnoDB;

4

If the above command fails or doesn't resolve the issue, try a more direct rebuild by copying to a new table and then renaming.

CREATE TABLE your_table_name_new LIKE your_table_name;
INSERT INTO your_table_name_new SELECT * FROM your_table_name;
RENAME TABLE your_table_name TO your_table_name_old, your_table_name_new TO your_table_name;
DROP TABLE your_table_name_old;

3. Repair MyISAM Table with myisamchk medium

Use the myisamchk utility to repair MyISAM tables.

1

Shut down the MariaDB server to ensure data consistency.

systemctl stop mariadb

2

Locate the data directory for your MariaDB instance. This is typically found in '/var/lib/mysql/'.

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3

Navigate to the database directory within the data directory.

cd /var/lib/mysql/your_database_name/

4

Run the myisamchk utility to check and repair the table. Replace 'your_table_name' with the actual table name.

myisamchk --safe-recover your_table_name.MYD

5

If the previous command doesn't work, try a more aggressive repair. Be aware that this might lead to data loss.

myisamchk --recover your_table_name.MYD

6

Restart the MariaDB server.

systemctl start mariadb

4. Restore from Backup medium

The most reliable solution is to restore the table or the entire database from a recent backup.

1

Identify your most recent, known-good backup of the database or table.

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2

If you have a full database backup, restore the entire database. The command will vary based on your backup method (e.g., mysqldump).

mysql -u your_user -p your_database_name < /path/to/your/database_backup.sql

3

If you have a backup of just the specific table, you might be able to import only that table. This often involves creating a new table and then importing the data.

mysql -u your_user -p your_database_name < /path/to/your/table_backup.sql

4

If the corruption occurred recently and you have binary logs enabled, consider point-in-time recovery to a state before the corruption.

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Related Errors

5 related errors

MariaDB Error 1877: Table Corrupt or Missing