Missing ext_to_obj_view

I am looking at a statspack report with a high "db file sequential read" wait time. I know what datafile is concerned, but I want to figure out what object is affected. So I looked at v$session_wait, and according to this link:

http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96536/apa4.htm#970855

... to tell you to find out the object to which the blocks belongs to.

However, that view ( ext_to_obj_view ) does not exist! Googling, I read some references that it is installed via catclust.sql. However, I am not running a cluster. So:

1. Why is ext_to_obj_view not created as part of a standard install ?
2. Can I run catclust.sql on a non-clustered installation ... will it break anything ?

Thanks, Received on Thu Jun 07 2007 - 18:47:03 CDT