MySQL error 3057 (ER_USER_LOCK_WRONG_NAME) signals that the string passed to GET_LOCK, RELEASE_LOCK, or IS_FREE_LOCK is not a valid user-level lock name.
MySQL error 3057 ER_USER_LOCK_WRONG_NAME occurs when GET_LOCK or related functions receive an invalid lock name (empty, over 64 bytes, or containing disallowed characters). Supply a non-empty string of 1-64 bytes to resolve the issue.
ER_USER_LOCK_WRONG_NAME
MySQL throws error 3057 with SQLSTATE 42000 when the string supplied to GET_LOCK, RELEASE_LOCK, or IS_FREE_LOCK is not accepted as a valid lock identifier. The server rejects names that are empty, longer than 64 bytes, or that contain NUL (0x00) characters.
The error first appeared in MySQL 5.7.5 and continues in 8.0.x. It is purely a client misuse issue and does not indicate server instability, but it can break application workflows that rely on user-level locks for mutual exclusion.
Error 3057 fires when the lock name does not meet the validation rules enforced by mysql_acquire_user_lock(). Any call to GET_LOCK(), RELEASE_LOCK(), or IS_FREE_LOCK() that passes an unacceptable string triggers the exception.
Disallowed inputs include an empty string, names exceeding 64 bytes after character-set conversion, or strings containing the NUL byte. Using a variable that unintentionally resolves to NULL also produces the same result.
Validate and sanitize the lock name before calling user-level lock functions. Ensure the string is 1-64 bytes long in the connection character set and contains no control characters.
Supply the name as a literal or a vetted parameter. When dynamically building lock names, trim excessive length and confirm they are not empty.
Many frameworks build lock names from concatenated values such as schema.table. A migration that lengthens table names can push the lock over 64 bytes. Shorten or hash parts of the name to stay within limits.
Scripting languages may pass NULL when a variable is undefined. Provide a default string or raise an early exception when the variable is empty.
Centralize lock-name construction in a helper function that enforces length and character rules. Add unit tests that assert all generated names are valid.
Use Galaxy's AI copilot to scan queries for GET_LOCK usage and flag potential invalid names during code review, preventing runtime surprises.
Error 3058 ER_USER_LOCK_DEADLOCK means another session holds the lock and the wait timeout expired. Handle with retry logic.
Error 1213 ER_LOCK_DEADLOCK deals with transactional row locks rather than user locks. Diagnose via SHOW ENGINE INNODB STATUS and reduce lock contention.
Calling GET_LOCK('',10) immediately triggers error 3057 because the lock name must contain at least one character.
Concatenating long schema, table, and column names can overshoot the 64-byte limit, causing the server to reject it.
Binary data mistakenly cast to VARCHAR may embed 0x00, which MySQL blocks in lock names.
A variable that resolves to NULL or an undefined placeholder results in an invalid name and raises the error.
The requested lock is held by another session and the timeout expired.
Transaction waited too long for row locks; adjust innodb_lock_wait_timeout.
InnoDB deadlock detected; examine SHOW ENGINE INNODB STATUS for details.
The lock wait was aborted by KILL QUERY or connection loss.
It is a client-side input validation error. Fix the SQL that passes an invalid lock name.
64 bytes after character set conversion. Characters, not code points, are counted.
No. ER_USER_LOCK_WRONG_NAME only applies to user-level locks handled by GET_LOCK and friends.
Galaxy's AI copilot inspects SQL in real time and warns when lock names breach length limits or are empty, preventing runtime failures.
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