How duplicate values inserted into the primary key column of table and how to fix it

[Raghavendra Rao J S V]

Hi All,


We are using Postgresql 9.2 database.



In one of the transactional table, I have observed duplicate values for the
primary key columns.



Please guide me how is it possible and how to fix this kind of issue.

-- 
Regards,
Raghavendra Rao J S V