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Re: invalid page header

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Hi,

Tom Lane wrote:
Hm, looks suspiciously ASCII-like.  If you examine the page as text,
is it recognizable?

Doh! Yup, is recognizable. It looks like some PHP serialized output:

png%";i:84;s:24:"%InfoToolIconActive.png%";i:85;s:29:"%InfoToolIconHighlighted.png%";i:86;s:26:"%InfoToolIconInactive.png%";i:87;....

We do store serialized PHP objects like the above one in the database, so it's probably not a mail spool.

What's the best cure? Can I just wipe out the block with something like:
# dd if=/dev/zero of=base/296788/302602 seek=58591 bs=8192 count=1

Yeah, try that.  I think the net effect will be that some wide (toasted)
values will be truncated.

Thank you for you guidance. I've done that and hope the running pg_dump goes through fine.

Regards

Markus


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TIP 9: In versions below 8.0, the planner will ignore your desire to
      choose an index scan if your joining column's datatypes do not
      match

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