JRV problem with pg_upgrade

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Hello,

I'am a database administrateur and I get trouble to upgrade database =
postgres
from 8.4.6 to 9.2.3.

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During pg_upgrade,  I can't start the old cluster with  parameter -c
listen_addresses=3D''

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This syntax work to start the old cluster and to access to the database

"/distrib/postgresql/app/chfdba/produit/8.4.6/bin/pg_ctl" -w -l
"pg_upgrade_server.log" -D =
"/distrib/postgresql/data/chorus_formulaires/data"
-o "-p 50432 -c autovacuum=3Doff=20

-c autovacuum_freeze_max_age=3D2000000000 -c listen_addresses=3D'*' -c
unix_socket_permissions=3D0700" start

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This syntax doesn't work to start the old cluster

"/distrib/postgresql/app/chfdba/produit/8.4.6/bin/pg_ctl" -w -l
"pg_upgrade_server.log" -D =
"/distrib/postgresql/data/chorus_formulaires/data"
-o "-p 50432 -c autovacuum=3Doff=20

-c autovacuum_freeze_max_age=3D2000000000 -c listen_addresses=3D'' -c
unix_socket_permissions=3D0700" start

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But pg_upgrade use this "bad" syntax even I try to force -c
listen_addresses=3D'*'

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pg_upgrade -c -d /distrib/postgresql/data/chorus_formulaires/data -D
/distrib/postgresql/data/chorus_formulaires/data/9.2.3 -b
/distrib/postgresql/app/chfdba/produit/8.4.6/bin -B
/distrib/postgresql/app/chfdba/produit/9.2.3/bin -o "-c =
listen_addresses=3D'*'"

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more pg_upgrade_server.log

could not connect to old postmaster started with the command:

"/distrib/postgresql/app/chfdba/produit/8.4.6/bin/pg_ctl" -w -l
"pg_upgrade_server.log" -D =
"/distrib/postgresql/data/chorus_formulaires/data"
-o "-p 50432 -c autovacuum=3Doff -c =
autovacuum_freeze_max_age=3D2000000000=20

-c listen_addresses=3D'*' -c listen_addresses=3D'' -c
unix_socket_permissions=3D0700" start

Failure, exiting

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I don't know how to workaround this problem ?

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Best regards,

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Jacques ravalet