On Wed, 2007-05-02 at 05:05, Gabriele Bartolini wrote: > Hi guys, > > I am having problems with freeing disk space after a massive delete > operation on a table that had approximately 80 million record. I > ran the following command, by setting the vacuum memory to > approximately a GigaByte: > > SET vacuum_mem TO 1024000 > VACUUM FULL ANALYSE VERBOSE oltp.requests > > Here is what I get: SNIP > DETAIL: 8211835 index row versions were removed. > 73821 index pages have been deleted, 73821 are currently reusable. > CPU 17.06s/28.14u sec elapsed 319.16 sec. > > But here, the command simply hangs. > > The table description is: Maybe it's hanging, maybe it's just taking a really long time to finish and get back to you. What's vmstat / top /iostat got to say about the machine during this "hang"? IF the I/O or CPU are high, then it's not hung, it's just taking a while.