rename datafile error

[mary]

I am trying to rename datafile. All I am trying to do is to change its name. Note I am not moving it to a different location. These are my steps:
-take ts offline;
-issue 'alter tablespace rename datafile '/old_name/' to '/new_name/'';
after that I am getting this error:
Ora-01525: error in renaming datafiles
Ora-01522: file /old_name/ to be renamed does not exist.


Please help me to figure it out.
Thank you.

[santoshym]

Hi Mary,

I feel you have missed a step of renaming the data file at the operating system


Follow these steps

1) alter tablespace tablespacename offline;

2) goto operating system and rename the old file to new file name example

On NT

Ren oldfilename newfilename

On Unix

mv oldfilename newfilename

3) Then execute
alter tablespace rename datafile '/old_name' to /new_name';

4) alter tablespace tablespace online;

The reason behind this Oracle does not automatically rename a datafile on the operating system you have to mannually do it using operating system command the alter tablespace rename command is used so that it can update the control files about the new location of the data files

Regards