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ORACLE数据库相关文件

Jun 07, 2016 pm 03:32 PM
oracle Example database document constitute Related type want

构成实例的文件类型主要有3种: 参数文件(parameterfile):指引控制文件位置,并且制定某些初始化参数。 跟踪文件(trace file):通常是一个服务器进程对某种异常错误条件作出响应时创建的诊断文件。 警告文件(alert file):多个数据库时间集中在一个文

构成实例的文件类型主要有3种:

参数文件(parameterfile):指引控制文件位置,并且制定某些初始化参数。

跟踪文件(trace file):通常是一个服务器进程对某种异常错误条件作出响应时创建的诊断文件。

警告文件(alert file):多个数据库时间集中在一个文件中警告DBA。

 

构成数据库的文件类型主要有5种:

数据文件(data file):数据库的主要文件,包括数据表、索引和所有其他的段。

临时文件(temp file):用于完成基于磁盘的排序和临时存储。

控制文件(control file):指引数据文件、临时文件和重做日志文件的位置及指出与文件状态有关。

重做日志文件(redo logfile):记录事务日志。

密码文件(passwordfile):用于对通过网络完成管理活动的用户进行认证。

 

2种可选文件类型,是Oracle Database 10g开始新增的:

修改跟踪文件(changetracking file):建立增量备份文件,提供数据库的备份和恢复。

闪回日志文件(flashbacklog file):存储数据库块的”前映像“,以便完成新增命令:FLASHBACK DATABASE。

 

数据的导入及导出相关的3类文件类型:

转储文件(dump file,DMP file):由Export(导出)数据库实用程序生成,并由Import(导入)数据库实用程序实用。

数据泵文件(Data Pumpfile):由数据泵导出(DataPump Export)进程生成,并由数据泵导入(DataPump Import)进程实用。外部表也可以创建和实用这种文件格式。

平面文件(flat file):无格式文件通常用于向数据库中加载数据。

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