duplicate key value violates unique constraint "pg_statistic_relid_att_inh_index" while performing full vacuum on the database

[Raghavendra Rao J S V <raghavendrajsv@xxxxxxxxx>]

Hi,

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?. 

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Regards,
Raghavendra Rao J S V