Error
Error Code:
1002
MariaDB Error 1002: Operation Denied/Failed
Description
Error 1002, represented by the generic 'NO' message, indicates that a requested operation or command could not be successfully completed or was explicitly denied by the MariaDB server. This error typically occurs when a fundamental condition for an action is not met, or when the server provides a general negative response without a more specific error code.
Error Message
NO
Known Causes
4 known causesInsufficient User Privileges
The database user attempting the operation lacks the necessary permissions (e.g., SELECT, INSERT, UPDATE, DELETE) on the target database, table, or specific action.
Server Resource Limitations
The MariaDB server might be unable to process the request due to resource constraints, such as reaching connection limits, insufficient memory, or storage space issues.
Malformed SQL Request
The SQL query or command sent to the server is syntactically incorrect or logically flawed in a way that the server cannot interpret or execute, leading to a general rejection.
Internal Server Condition
An unexpected internal condition or state within the MariaDB server prevented the successful execution of the command, resulting in a generic denial of the operation.
Solutions
3 solutions available1. Check and Grant User Privileges easy
Verify the user has necessary permissions for the operation
1
Check current user privileges
SHOW GRANTS FOR CURRENT_USER();2
Grant necessary privileges to the user
GRANT SELECT, INSERT, UPDATE, DELETE ON database_name.* TO 'username'@'host';
FLUSH PRIVILEGES;3
For all privileges on a database
GRANT ALL PRIVILEGES ON database_name.* TO 'username'@'host';
FLUSH PRIVILEGES;2. Check Server Resources medium
Verify server has sufficient resources to process requests
1
Check current connections vs max allowed
SHOW STATUS LIKE 'Threads_connected';
SHOW VARIABLES LIKE 'max_connections';2
Check disk space on Linux
df -h /var/lib/mysql3
Increase max connections if needed
SET GLOBAL max_connections = 500;3. Validate SQL Syntax easy
Check SQL query for syntax errors
1
Use EXPLAIN to validate query syntax without executing
EXPLAIN SELECT * FROM your_table WHERE condition;2
Check MariaDB error log for detailed error messages
sudo tail -100 /var/log/mysql/error.log3
Enable general query log temporarily for debugging
SET GLOBAL general_log = 'ON';
SET GLOBAL general_log_file = '/var/log/mysql/query.log';