"Carmen Wai" <wai_carmen@hotmail.com> writes:
> I am a new user of postgresql. I am using postgresql 7.3.4 and I had
> inserted about 1.7 million records to a table. When I vacuum / select * from
> table, it gets a error message of : Invalid page header in block xxx of
> TableA. I check that I still can insert records to the table. But I am not
> able to get part of the data (as I try to copy all records to text file,
> only around 1.6 million records are copied.)
It sounds to me like you have unreliable disk hardware --- I'd suggest
running badblocks or some other disk-tester program to look for problems.
regards, tom lane