Mysqlcheck.exe Checks for database health, for example to check, repair, analyze, or optimize tables.
exe检查数据库是否健康，比如检查、修复、分析或优化表。
For example, because the server can repair the database online while still under load, messages are delivered and available to the user.
例如，因为服务器在运行负载时仍然可以在线修复数据库，因此用户可以收到消息。
If your MongoDB server crashes, you should repair the database to check for any corruption and perform some data compaction.
如果MongoDB服务器崩溃，应修复数据库以检查错误并执行一些数据精简。
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