Hi everybody,
    I have a Postgres Database Server  8.0 in a Windows 2000 Professional. 

    I need to migrate this server to 8.1.4 or 8.1.5 Posgresql Version, but, 
when I execute backup command from pgAdmin III or from a command line (pg_dump 
[parameters] ) I get this error:
        
        invalid page header in block 4686 of relation "tb_Bilhete"

Details: 
==========================
pg_dump: ERROR:  invalid page header in block 4686 of relation "tb_Bilhete"
pg_dump: SQL command to dump the contents of table "tb_Bilhete" failed: 
PQendcopy() failed.
pg_dump: Error message from server: ERROR:  invalid page header in block 4686 
of relation "tb_Bilhete"
pg_dump: The command was: COPY public."tb_Bilhete" ("inIdBilhete", 
"dtDataHora", "inDuracao", "vcNumRefPrivado", "vcNumRefPublico", 
"vcNumPartPrivado", "vcNumPartPublico", "chDirecaoRef", "vcTronco", 
"chInterno", "chProcessado") TO stdout;
pg_dump: *** aborted because of error
Process returned exit code 1.
==========================

How Can I resolve this problem?
I have other backup, but I need the more recent backup.

I search at the internet about this problem, but I find solutions only for 
Linux System using Linux tools.

Thanks
André Guergolet
    

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