I get an error "PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 91 bytes) in /var/www/htdocs/ecogen1/html/sites/includes/cache.inc on line 434" when simply publishing a single node through VBO.
It appears even before the confirmation page.

As soon as I give moderators the permission "Bypass content access control" the error disappears.

Access control on our site is handled by Organic Groups (without OG access control module) and Domain access (without Domain access strict module)

Is it normal that VBO used such an impressive amount of memory?
Any way to change this?

Comments

Project:Views Bulk Operations (VBO)» Organic groups
Version:7.x-3.1» 7.x-2.x-dev
Component:Core» og.module
Issue summary:View changes

No, VBO isn't the problem here. I myself have never seen such a memory breach on regular installs.
Either there's a OG / Domain Access bug that's causing them to use too much memory, or you just have too many modules installed.

Let's ask Amitai and the rest of the OG team whether they have any tips to share.
Otherwise you'll have to debug it yourself (xhprof to see where the memory is going).