> what happens to sessions is that it does:
> 
> SELECT session_data, id 
> FROM   sessions
> WHERE  id = ?
> FOR UPDATE
> 
> .... client does some processing ...
> 
> UPDATE sesssions set session_data = ? WHERE id = ?;
> 
> (this is where the error happens)
> 
> I think part of my problem might be that sessions is a view 
> and not a table,

Did you create an on update do instead rule ?

This is currently not done automatically for views,
thus views without additional "create rule"s are select only.

But, I am wondering whether the "for update" places the correct lock ?

Andreas

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