I have had a serious loss of data and wondered if anyone could shed any light on what may have happened. My users have been writing reports on students. No error messages have been produced and when called back up the reports seem to be present at the time of writing. However, next day they have disappeared, and they do not appear in a pg_dump. They seem to have been kept in memory and never written to disk. We are using Zope and connecting to Postgres through psycopg on Centos 5. I suspect a hard disk failure but any other ideas would be welcome. Would these reports be in the WAL? regards garry
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