ERROR: No one parent tuple was found

Hi,

I got error when running vacuum analyze:

discovery=> vacuum analyze;ERROR:  No one parent tuple was found
discovery=> 
discovery=> vacuum analyze hits;NOTICE:  CreatePortal: portal <vacuum> already existsERROR:  No one parent tuple was
found

postgres 6.5.3, Linux x86

Everything seems work fine. How dangerous this error ?
I got it for the first time since project was started about 6 months ago -
vacuuming runs in background every hour.


Hmm, now vacuum works. I just restart psql.
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83