AccessShareLock on pg_authid

[Granthana Biswas <granthana.biswas@xxxxxxxxx>]

Hi,

Processes are failing due to the following error on Postgresql 8.3.5:

FATAL:  lock AccessShareLock on object 0/1260/0 is already held

1260 oid belongs to pg_authid. This error is not coming for every transaction.

I have found these two links related to the above error but not quite helpful:

http://web.archiveorange.com/archive/v/alpsnhads7a0RcdRyB5t

http://www.postgresql.org/message-id/7386.1315434323@xxxxxxxxxxxxx

Has anyone come across this issue and debugged it successfully?

Thanks & Regards,

GB