how to empty cache for caching plugins using phpMyAdmin

After recently upgrading to 4.3 and getting a perennial blank page, I rolled everything back to 4.2.4, using backups. However, I would like to upgrade to 4.3….

In some of the rather large amount of reading I did on the Labour Day long weekend (is that why it’s called Labour Day? ;-)), I saw references to the need to empty any caching plugins.

First of all, I’m not exactly sure which of the plugins I run, if any, are caching plugins. Second of all, I was entirely unable to empty those caches when dealing with the blank page syndrome.

So. What exactly should be looked for in the WP tables of phpMyAdmin to tell if whatever it is has to do with caching? Also, could someone please point to a Dummy’s style page that outlines how to empty caches using phpMyAdmin?

Thank you.

E Morris, e t h e r w o r k dot n e t slash b l o g << purposely left unlinked in attempt to keep spammers at bay

running these plugins (all latest versions):

Akismet
Blogroll Widget with RSS Feeds
Broken Link Checker
Disqus Comment System
Get Custom Field Values
Get Recent Comments
iThemes Security
rc:custom_field_gui
Redirection
Relevanssi
Time Zone
WP DoNotTrack
WP-CMS Post Control