MySQL raises ER_AUDIT_LOG_USER_NAME_INVALID_CHARACTER (code 3224) when a user account name contains a character that is not permitted by MySQL naming rules.
MySQL error 3224 ER_AUDIT_LOG_USER_NAME_INVALID_CHARACTER occurs when a user account name includes an illegal character. Remove or replace the character, or quote the identifier correctly, then retry the statement to resolve the issue.
ER_AUDIT_LOG_USER_NAME_INVALID_CHARACTER
MySQL throws error code 3224 with the condition ER_AUDIT_LOG_USER_NAME_INVALID_CHARACTER when it encounters an illegal character in a user account name. The server rejects the statement and writes an entry to the audit log.
The error was introduced in MySQL 5.7.22 as part of tightened auditing and security checks. It typically surfaces during CREATE USER, ALTER USER, GRANT, or any statement that references a user account.
Illegal characters such as spaces, slashes, backticks, or multibyte symbols inside the user name trigger the error. MySQL permits only ASCII letters, digits, underscore, hyphen, and at-sign in unquoted user names.
The error can also appear when an automated script generates user names dynamically without sanitizing input, causing unexpected symbols to slip in.
Identify the offending character first. Recreate or rename the account using only allowed characters, or enclose the name with single quotes and host part using GRANT syntax.
After correction, rerun the statement. Ensure that downstream applications update their connection credentials accordingly.
When provisioning temporary users like dev/2024, replace the slash with an underscore (dev_2024). If you need special symbols, wrap the identifier in quotes: 'dev-2024'@'%'.
CI pipelines that append build numbers may insert spaces. Trim or substitute them with hyphens before executing CREATE USER.
Enforce a naming convention: lowercase letters, digits, and underscores only. Validate user input in application code before issuing SQL statements.
Automate audits using INFORMATION_SCHEMA.USER_ATTRIBUTES queries to flag non-compliant accounts early.
ER_NONEXISTING_GRANT (1141) occurs when you revoke privileges from a user that does not exist. Ensure the account is present before REVOKE.
ER_PASSWD_LENGTH (1415) signals that the provided password is too short. Adjust the validate_password policy or supply a longer password.
Characters like space, slash, backtick, and multibyte symbols are not allowed and will trigger the error.
Applications that build user names from external input can introduce illegal symbols if they skip validation.
Hidden Unicode characters sometimes creep in when copying credentials from documents or chat, resulting in invalid names.
Appears when revoking privileges from a non-existent user. Verify the account before REVOKE.
Raised when attempting to use a password that fails policy checks. Adjust validate_password settings.
Occurs when the connected user lacks privileges to create or rename other users.
Yes. Hyphens are permitted without quoting. Just avoid spaces and other special symbols.
Quoting allows certain symbols, but non-printable or control characters will still fail. Stick to visible ASCII characters for reliability.
Applications using the old credentials will fail to authenticate. Update connection strings after renaming.
Galaxy's context-aware SQL editor validates identifiers in real time and flags illegal characters before you run the query.
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