I have a site that's been going for about 4 years with several hundred pages. I've had strange problems when accessing the Pages section (to choose a page for editing) and while in Page editing. These have been resolved (up until now) by deactivating plugins down to the bare minimum (three that are essential for the user experience), then working on page creation or editing, then reactivating plugins.
The symptoms were two-fold:
Pages - this showed up totally blank; could not see any pages listed
Individual page editing (if I used the Edit Page option in the admin bar) - the page contents would be white, although I could use my mouse to select text in this area (it would highlight, showing it was there) - and the lower section would only show a couple of the panels (it would stop loading the page)
Today I reached the point where I had errors even if I deactivated all plugins, so I need some urgent help.
I did a cleanup on the database which pared it down from 93 mb to 58 mb (removing page revisions, optimizing database tables, etc.) and now I can edit pages as long as I deactivate all plugins. However, I'm concerned that the problem will get worse, and that I won't be able to do any page creation or editing at all.
At this point, when I'm only loading two plugins (the very bare minimum for users to be able to navigate the site and watch videos - EmbedIt and JC Submenu) I'm getting the following error message when I access the Pages section of the admin area:
Fatal error: Out of memory (allocated 147587072) (tried to allocate 72 bytes) in /homepages/30/d364769427/htdocs/acbestpractices/wp-includes/meta.php on line 778
If anyone has any ideas for what I can do to fix the issue, I'd be most grateful. I will also appreciate referrals to someone who can troubleshoot and fix this for a reasonable consulting fee; feel free to offer your own services if appropriate.