> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/server/reference/error-codes/mariadb-error-codes-4200-to-4299/e4243.md).

# Error 4243: Cannot execute RESET MASTER as the binlog is in use by a connected slave or other RESET MASTER or binlog reader. Check SHOW PROCESSLIST for "Binlog Dump" commands and use KILL to stop such readers

| Error Code | SQLSTATE | Error               | Description                                                                                                                                                                                          |
| ---------- | -------- | ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 4243       | HY000    | ER\_BINLOG\_IN\_USE | Cannot execute RESET MASTER as the binlog is in use by a connected slave or other RESET MASTER or binlog reader. Check SHOW PROCESSLIST for "Binlog Dump" commands and use KILL to stop such readers |

## Possible Causes and Solutions

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