Is there any max char length of names in Blender? I'm storing node names, material names, shape key names etc in a DB and need to setup the proper max length of the DB char fields.
A test suggests that the longest name that an object can have is sixty one characters. I determined this by using the default cube, and giving it the name
A material name has the same parameters, leading me to suspect that the same name length is the default for any internal name.
Although you did not ask it, I believe that the total path name of a Blender file is OS dependent, and in Window 7 Professonal 64 bit, is about 256 characters.