The server raises this error when a character set reset references a code-point outside the legal range for that charset or collation.
MySQL Error 89 EE_RESET_CHAR_OUT_OF_RANGE happens when the server resets a character set and finds a character index outside the allowed range. Ensure the requested charset and collation are valid for your MySQL version, then reload metadata or restart the session to clear the fault.
Reset character out of range: %s. EE_RESET_CHAR_OUT_OF_RANGE was added in 8.0.13.
Error 89 signals that the server attempted to reset or initialize a character set and found at least one code-point that exceeds that charset’s permitted range.
The condition was introduced in MySQL 8.0.13 to guard against corrupted or mismatched internal character set tables. It usually appears during startup, after an ALTER DATABASE ...
CHARACTER SET command, or when loading metadata for stored routines.
A charset definition file may be missing bytes, causing index lookups to point beyond the array bounds.
Requesting an unsupported or obsolete collation can trigger the range check and raise the error.
Upgrading the server without copying custom character set binaries leaves dangling references that fail the reset.
First, verify that the charset and collation you set actually exist in INFORMATION_SCHEMA.CHARACTER_SETS and COLLATIONS.
Revert to a stock option if the entry is absent.
If the error appears at startup, replace any custom .uca, .xml, or .csm files with clean versions from the same MySQL build, then restart mysqld.
After ALTER DATABASE SET CHARSET utf8mb4 but collation uses a removed variant, Error 89 fires. Fix by picking a valid utf8mb4 collation.
Dump/restore across versions may import an old collation ID.
Re-export with --skip-definer or update the dump file’s CHARACTER SET clauses.
Always test custom charsets on a staging server before copying them into production.
Lock MySQL minor versions across all nodes so that collation IDs remain consistent during replication.
Use Galaxy’s schema-aware AI copilot to autocomplete only valid CHARACTER SET and COLLATE names, preventing typos that raise Error 89.
Error 1901 (HY000) Wrong parameters to character set handler appears when the server cannot initialize a custom charset.
The fix path mirrors Error 89: verify files and revert to defaults.
Error 1267 Illegal mix of collations triggers when data in a query mixes incompatible collations. Convert columns to a common collation or CAST in SQL.
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No rows are altered, but the server may refuse to start or execute statements until the charset files are fixed.
Ignoring it risks crashes during subsequent character set operations. Resolve it promptly.
Only if the upgrade provides valid charset tables. Always test after upgrade.
Galaxy’s autocomplete lists only valid charsets and alerts on typos, reducing the chance of issuing invalid ALTER statements that cause Error 89.
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