On 4/01/2012 11:07 PM, bbo...@free.fr wrote:

so i tried to copy the old 9.0 tree to a machine with a still working 9,0
postgres, but it stops with
Starting PostgreSQL 9.0 database server: mainError: could not exec
/usr/lib/postgresql/9.0/bin/pg_ctl /usr/lib/postgresql/9.0/bin/pg_ctl
start -D /var/lib/postgresql/9.0/main -l
/var/log/postgresql/postgresql-9.0-main.log -s -o -c
config_file="/etc/postgresql/9.0/main/postgresql.conf" : ... failed!
  failed!
  so what can i do to extract the data of that tree and feed it into the
  9.1 tree?


Look at the PostgreSQL logs to see why it failed to start. Probably permissions. See:

  wiki.postgresql.org/wiki/Guide_to_reporting_problems

--
Craig Ringer

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