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                            [TOC]
## 1.MySQL物理文件的組成
### 1.1.日志文件
在MySQL數據庫中，日志文件主要記錄了數據庫操作信息和錯誤信息。常用的日志文件包括錯誤日志、二進制日志、查詢日志、慢查詢日志和InnoDB引擎在線Redo日志等。
1. 錯誤日志：Error Log
錯誤日志文件記錄了MySQL Server運行過程中遇到的所有嚴重的錯誤信息，以及MySQL每次啟動和關閉的詳細信息。默認情況下錯誤日志功能是關閉的，啟動時要重新配置
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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