how to get the last time of refresh symbol in a pcb with skill? if over 2 days，i need to refresh again.

I don't think Cadence saves the last refresh date within the symdef info, so I think you are on your own with this request...

did u set up autosave?

if so, u can search the old dra files in a local directory.

for my case, each time i save a dra file, it creates a copy as shown below.

Thanks DavidJHutchins.

i can't find a way to get the imformation，maybe i shall ignore it.

sorry, i just to want to confirm  if the all symbols in the pcb are consistent with the lib.

maybe, some symbols in the lib has been modified.

You are not the first and only one asking this.

Check this thread:  community.cadence.com/.../compare-the-database-footprint-with-library-footprint--skill