Raghavendra Rao J S V wrote: > While performing vacuum full, I have received the below highlighted error. Please guide me how to resolve this issue. > > > /opt/postgres/9.2/bin/psql -p 5433 --username=cmuser cpcm -c "VACUUM FULL ANALYZE;" > > > ERROR: duplicate key value violates unique constraint "pg_statistic_relid_att_inh_index" > DETAIL: Key (starelid, staattnum, stainherit)=(18915, 6, f) already exists. > > ' pg_statistic ' is a meta data table. Is it ok if I remove one duplicated record from ' pg_statistic' table?. That is data corruption. Do you have any idea how you got there? Any crashes, any unsafe settings? Unreliable hardware? Fortunately it is only the pg_statistic table. You can stop the server, start it with pg_ctl start -o -O Then connect as superuser and run TRUNCATE pg_statistic; ANALYZE; That should take care of the problem. It would be a good idea to pg_dumpall the cluster, remove it, recreate it and load the dump so that you are sure to have no data corruption. Yours, Laurenz Albe
