The server rejects a SET statement because the maximum value for a dynamic option cannot be assigned.
MySQL Error 75 EE_FAILED_TO_ASSIGN_MAX_VALUE_TO_OPTION appears when SET attempts to assign the keyword MAX_VALUE to a variable whose upper bound is internally controlled. Use an explicit numeric value or modify the option in the configuration file to resolve the issue.
%s: Maximum value of '%s' cannot be set. EE_FAILED_TO_ASSIGN_MAX_VALUE_TO_OPTION was added in 8.0.13.
MySQL raises Error 75 (EE_FAILED_TO_ASSIGN_MAX_VALUE_TO_OPTION) with the text "%s: Maximum value of '%s' cannot be set" when a SET statement or startup parameter tries to force an option to its documented MAX_VALUE constant.
The server treats that keyword as non-assignable and aborts the request.
The error was introduced in MySQL 8.0.13 and only fires for variables whose upper limits are reserved for internal auto-tuning, such as innodb_log_file_size or max_connections.
The condition occurs at startup with --max_connections=MAX_VALUE or at runtime with SET GLOBAL max_connections = @@MAX_VALUE.
It can also surface through automation tools that inject MAX_VALUE as a placeholder when building configuration templates.
Failing to set a required option may leave the server running with a default that is too low for production workloads, causing connection errors or performance bottlenecks. Continuous retries can also spam logs and saturate monitoring alerts.
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Admins sometimes copy examples that show MAX_VALUE as an illustrative placeholder and mistakenly leave it in production scripts.
Several memory and log parameters choose a maximum based on total RAM.
Setting them to MAX_VALUE is blocked to protect stability.
Configuration generators built for older MySQL versions may still emit MAX_VALUE even though newer releases reject it.
When a SET GLOBAL fails due to lack of privileges, some wrappers retry with MAX_VALUE, inadvertently triggering the error.
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No. Variables that prohibit MAX_VALUE also refuse it in SESSION scope.
Only internal server code may reference MAX_VALUE. Client-side statements must supply explicit numbers.
Replicas encounter the same restriction. Use explicit values in CHANGE REPLICATION SOURCE TO and relay log settings.
Galaxy's editor flags invalid constants like MAX_VALUE in real time and suggests valid numeric ranges, preventing the error before the query is executed.
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