| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Mike C <smith(dot)not(dot)western(at)gmail(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: WAL and pg_dump |
| Date: | 2005-12-22 23:32:41 |
| Message-ID: | 1659.1135294361@sss.pgh.pa.us |
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| Lists: | pgsql-admin |
Mike C <smith(dot)not(dot)western(at)gmail(dot)com> writes:
> I guess if pg_dump was modified to record the last complete transaction id
> (in archive format maybe) then the WAL files could be used?
No. pg_dump output and WAL files are at two utterly different levels of
abstraction --- the WAL files describe the exact placement of tuples
within tables and indexes, to mention just one example. There's no hope
of using pg_dump output to reproduce the state of a database exactly
enough that you could apply WAL files to it.
regards, tom lane
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