ERROR: Could not access status of transaction ####

Yesterday I posted 2 questions that were ignored, so I'll try a third now.

When doing a query I  get same error as below, which are the results of vacuumdb.

vacuumdb: vacuuming of database "airburst" failed: ERROR:  could not access status of transaction 7564911

DETAIL:  could not open file "/var/lib/postgresql/7.4/main/pg_clog/0007": No such file or directory

I'm only querying from 1 table.

I could really use some help.

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Regarding yesterday's Qs, how  best to un-import from pg_dumpall's results?

I'd dump-all'd into a text file and imported it via a psql -f filename.

It had encoding errors AND did NOT make the database I needed.  Everything went into db postgres.

Please help.

Ralph Smith

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