How would I "close" a atble?

Hi Everybody,

I have a weired situation. Out of 17 tables which
comprise a database, one of them refuses to talk to
me. When I issue:
select * from marker;
it hangs. When I replace * with amy column name, it
makes no difference. It does not respond, unless I
issue ctrl-C. I have checked with all other tables
and they are appear healthy.

I suspect for some reason the table got "opened" and
whoever opened, never closed it. (This is my grasping-
the-straw theory.) I have been using this database
pretty actively for last 3 months and this never
happened before. Is there any way to explicitly close
this table?

The only other solution I can think of would be to
shutdown and restarting the database, which is what
I would like to avoid, if possible.

Any suggestions are welcome.

Regards,

Tena Sakai
tsakai(at)gallo(dot)ucsf(dot)edu