Re: Issue while creating an index

> )#ORA-01114: IO error writing block to file 255 (block #

please check which data file is with id 255 ?

you can use below query for this :

SQL> select file_name, tablespace_name, file_id, status from dba_data_files where file_id= 255;

If this is a temp data file, you can work with resolution of below SAP Note.

1890999 - ORA-01114 ORA-27072 occurs for Tempfiles

best regards

ashish