ORA-01221: data file string is not the same file to a background process

ORA-01221: data file string is not the same file to a background process
Cause: When the database writer opens the data file, it is accessing a different physical file than the foreground doing the recovery. The timestamp set in the file header by the foreground was not found by the background. It may be that the background process could not read the file at all.
Action: Look in the DBWR trace file for the error it recieved when attempting to read the file header. Reconfigure the operating system as needed to have the file name successfully access the same file when opened by a background process.

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分类：大数据

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小智 2018-08-30 16:36

ORA-01221：数据文件字符串与后台进程不是同一个文件,
.原因：当数据库写入程序打开数据文件时，它正在访问与执行恢复的前台不同的物理文件。由前台在文件头中设置的时间戳未由背景找到。这可能是后台进程根本无法读取文件。,
.操作：在DBWR跟踪文件中查找在尝试读取文件头时收到的错误。根据需要重新配置操作系统，以便文件名在后台进程打开时成功访问同一个文件。,
.

aiaiDBA

13718043309

010-86462881

ORA-01221: data file string is not the same file to a background process

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