Re: PG_XLOG - Mailing list pgsql-general

From Bruce Momjian
Subject Re: PG_XLOG
Date
Msg-id 200203131823.g2DINRl22242@candle.pha.pa.us
Whole thread Raw
In response to PG_XLOG  (TERENYI Balazs <terenyi@freemail.hu>)
List pgsql-general
TERENYI Balazs wrote:
> Hi!
>
> How can I make pg_xlog files human readable? I have forgotten to switch on
> the debug_print_query option and somehow rows were deleted from a
> database. I don't know how.

You can't, really.  If you haven't vacuumed, you can modify tqual.c,
function HeapTupleSatisfiesSnapshot() to always return true, recompile
and install that binary, and a SELECT will then show all the rows.

Make a backup first, and be sure you use that modified binary only for
during recovery.

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

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