On Wed, Jul 9, 2014 at 1:25 PM, M Tarkeshwar Rao <m.tarkeshwar.rao@xxxxxxxxxxxx> wrote: > > I am sharing the table structure. When we removed the unique index it is working fine. > And when created normal index(not unique) it is working fine. > > After removing unique index we tried to recreate it but it is giving following infinite logs : > > concurrent insert in progress within table "eventlogentry" > > caveat when building a unique index concurrently is that the uniqueness constraint Hum, that is interesting. So to sum up, your database works fine as long as the index isn't present but you want to enforce this unique constraint. What version of Postgres is this precisely (9.1.what?) Has it ever been upgraded using pg_upgrade? Has it suffered a crash or been restored from backups? What of Adrian Klaver's question about the database being copied? When you run create index you get this error? Please paste the actual command and actual error messages. It should contain more information than that. Try doing it with this set first: \set VERBOSITY 'verbose' When you're getting these errors please run select * from pg_stat_activity and paste that information -- remove any confidential information but leave any INSERT, UPDATE, DELETEs on the table you're indexing with just the confidential data removed. Also, I don't think this is right but perhaps it could be a prepared transaction? Try "select * from pg_prepared_xacts"? If it's really corruption --which still seems a bit odd to me-- You might find a simple vacuum or vacuum freeze on the table fixes up the problem. -- greg