The following bug has been logged online:

Bug reference:      2065
Logged by:          Wim Audenaert
Email address:      [EMAIL PROTECTED]
PostgreSQL version: 8.1.0.2
Operating system:   Windows XP
Description:        Problem with language conversion in pg_dump
Details: 

I have a database created with encoding UTF8 while I used SQL_ASCII for the
installation of Postgres 8.1.0. 

When I try to do a pg_dump of my database, I get the following error
message:

pg_dump: SQL command failed
pg_dump: Error message from server: ERROR:  cache lookup failed for function
170
39
pg_dump: The command was: SELECT tableoid, oid, adnum,
pg_catalog.pg_get_expr(ad
bin, adrelid) AS adsrc FROM pg_catalog.pg_attrdef WHERE adrelid =
'23268'::pg_ca
talog.oid

I looked for the function 17039 in the pg_proc table, and this function
doesn't exist. It does exists in an older version of the database (8.0). 

I tried to use the encoding parameter in pg_dump, but without success.

What can I do resolve this problem?

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