Hi, Does anybody know what this means ? "LOG: removing file "/var/lib/pgsql/data/pg_clog/0000", There were whole bunch of files got removed from the pg_clog directory. I saw this on my postgres 7.4 log while doing a vacuum on a database last night, this database was never vacuumed before for past one year. The reason we didnt do any vacuum's before on this because it was used only for SELECTS. Is this a problem something to worry about ? my database seems to working fine , I could run all my queries and everything seems to be fine. Thanks! Pallav.