This error may appear during instance shutdown. You may safely ignore this error, as it is raised only after the database has been closed. No action or corrective steps on the part of the DBA are required. Although the occasional appearance of this error on instance shutdown is messy and annoying, it is not harmful in any significant way.
Oracle provides patches for this bug (7572335) for a limited set of platforms and versions:
- Solaris Sparc 64-bit (10.2.0.4 – 10.2.0.4.4 and 126.96.36.199.2)
- IBM AIX POWER 64-bit (10.2.0.4)
The limited availability of a patch is due to the harmless nature of the error.