Re: destroyed db/index (corruption) [SOLVED]

On Dienstag, 6. Februar 2007 08:46 Achilleas Mantzios wrote:
> Thats what i mean, postmaster is alive, and accepting connections
> during the above command, so what would prevent a 2nd client (from
> your mail server setup most likely)
> from inserting a value that is later present in the dump,
> which is later attempted to be COPY'ed to the table
> and ofcource that violates the PRIMARY KEY CONSTRAINT?
> In other words, do you have full control of your DB when that
> happens? If some 2nd client, not controled by you, inserts a value
> that is later found in the dump, it is completely normal that this
> ERROR will be thrown. Have you tried, for instance, disabling all
> unwanted access to postmaster, e.g. through data/pg_hba.conf ?

After your tip, I rechecked the old logs. There, I had
"Tabelle enthält duplizierte Werte"
(table contains duplicate values)
but now the log message was
"duplizierter Schlüssel verletzt Unique-Constraint »bayes_token_pkey«"
(duplicate key violates unique constraint)

The latter message is just an INFO, though its logged as ERROR. It
happens when you try to INSERT a primary key that's already there, but
this got only logged once:
ZUSAMMENHANG: SQL-Anweisung »INSERT INTO bayes_token (id, token,
spam_count, ham_count, atime) VALUES ( $1 , $2 , $3 , $4 , $5 )«
PL/pgSQL function "put_tokens" line 18 at SQL statement
All other times just the violation was logged.

I double checked with a dump and reload to a fresh db - there is no
spoon [The Matrix], and also no duplicate values exist.

The error I got december 2006 with the duplicate values was really a
situation where values seem to have been inserted during a reload, but
before the index was there. I was just nervous and mixed the two
different warnings.

But I'd like to suggest changing the ERROR to WARNING for "duplicate key
violates unique constraint", as it's not serious - but it sounds like a
big problem.

Efharisto, Achilleas!

mfg zmi
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