Trying to resize online redologfile as below.

ALTER DATABASE DATAFILE '/u01/oracle/data/redo/redo1.log' resize 5m;

The path given and the name of the file is correct. But it throws the error

ORA-03296: cannot resize datafile - file
/nbd07/oracle/product/8.1.5/oradata/oratest/redolog1.log not found

Hope I can resize online redolog file like any other datafile. There is no problem when I resize a DATA datafile.

Anybody came across this kind of problem?