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Description

This error occurs in MariaDB when an attempt to modify an existing stored procedure or function using the ALTER statement fails. It indicates that the database encountered an issue preventing the successful alteration of the specified stored program.

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Error Message

Failed to ALTER %s %s

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Known Causes

3 known causes

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Insufficient User Privileges

The database user attempting the ALTER operation does not possess the necessary `ALTER ROUTINE` privilege to modify stored procedures or functions.

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Stored Program Not Found

The specified stored procedure or function name does not exist in the current database or schema, or there is a typo in the name.

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Invalid ALTER Syntax

The `ALTER PROCEDURE` or `ALTER FUNCTION` statement contains syntax errors, incorrect parameters, or refers to non-existent objects within its definition.

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Solutions

4 solutions available

1. Verify Stored Program Syntax and Permissions easy

Ensure the ALTER statement is syntactically correct and the user has necessary privileges.

1

Double-check the syntax of your `ALTER` statement for the stored program (procedure or function). Ensure all keywords, identifiers, and delimiters are correct. Pay close attention to parentheses, commas, and semicolons.

-- Example of a correct ALTER PROCEDURE statement:
ALTER PROCEDURE my_database.my_procedure
  (IN new_param INT)
  BEGIN
    -- New procedure body
  END;

2

Verify that the database user executing the `ALTER` statement has the `ALTER ROUTINE` privilege on the specific stored program or the entire database. Connect as a user with `SUPER` or `ALTER` privileges and check.

-- To check privileges for a user:
SHOW GRANTS FOR 'your_user'@'localhost';

-- To grant the necessary privilege (if needed):
GRANT ALTER ROUTINE ON my_database.* TO 'your_user'@'localhost';
FLUSH PRIVILEGES;

3

Ensure you are connected to the correct MariaDB instance and database where the stored program resides.

2. Drop and Recreate the Stored Program medium

Safely remove and re-add the stored program if ALTER fails repeatedly.

1

Generate the `CREATE` statement for the existing stored program. This will serve as a backup and the basis for recreation.

-- For stored procedures:
SHOW CREATE PROCEDURE my_database.my_procedure;

-- For stored functions:
SHOW CREATE FUNCTION my_database.my_function;

2

Execute the `DROP` statement for the stored program.

-- For stored procedures:
DROP PROCEDURE IF EXISTS my_database.my_procedure;

-- For stored functions:
DROP FUNCTION IF EXISTS my_database.my_function;

3

Execute the `CREATE` statement (obtained in step 1) to recreate the stored program with its original definition. Then, apply your desired changes using a new `ALTER` statement, or incorporate them directly into the `CREATE` statement if feasible.

-- Example of recreating and then altering:
-- (Paste the output from SHOW CREATE PROCEDURE/FUNCTION here)

-- Then, alter if needed:
ALTER PROCEDURE my_database.my_procedure (...);
-- Or, if the change is simple, recreate with the change:
CREATE PROCEDURE my_database.my_procedure (...)
BEGIN
  -- New logic
END;

3. Check for Dependencies and Locks medium

Investigate if other database objects or processes are interfering with the ALTER operation.

1

Identify if the stored program you are trying to alter has dependencies on other objects that might be locked or in an inconsistent state. This is less common for stored programs themselves but can be a factor if they interact with tables that are undergoing changes.

2

Examine the `information_schema.PROCESSLIST` for any long-running queries or transactions that might be holding locks on the database or the stored program's metadata. Terminate suspicious processes if necessary and safe to do so.

SHOW FULL PROCESSLIST;

3

Consider temporarily stopping any applications or services that heavily interact with the database to rule out concurrency issues or accidental locks.

4. Review MariaDB Error Logs easy

Examine MariaDB's error logs for more detailed diagnostic information.

1

Locate your MariaDB error log file. The default location varies depending on your operating system and installation method, but it's often found in `/var/log/mysql/error.log` or similar. Consult your MariaDB configuration file (`my.cnf` or `my.ini`) for the exact path if unsure.

grep 'log_error' /etc/mysql/my.cnf

2

Search the error log file for entries corresponding to the time of the `ALTER` operation that failed. Look for any messages preceding or immediately following the '1334' error for more context.

tail -n 100 /var/log/mysql/error.log | grep '1334'

3

Analyze the log messages for clues about the underlying cause. This might include permission issues, syntax errors, or problems with the internal data dictionary.

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Related Errors

5 related errors

MariaDB Error 1334: Alter Stored Program Failure