Tiles or File size , what is the limitation for the OruxSqlite Database?

I made some very large maps using Mobac
I need to know if the "size" limitation for ORUXmaps itself or the oruxsq databases?
Is the limitations the number of tile items stored , or the size of the file itself?

Ex: i have many maps that are around 1Gig in size, they all work fine, from about 564Meg to about 1.1Gig
I have made maps that are as large as 1.5Gig using some 120,000 "tiles" server tiles not nessisarily stored tiles.
i was trying to keep the size to around 1Gig, but i have one that is 1.5gig and it still works great.
BUT
i have made maps that were 1.5-1.7gig and they did not work.

All the maps that i wanted were to big for my 32gig card, I am going to remake them using 80% Jpeg compression, instead of 90% jpeg compression, which will make them 67% in size or about 1/3rd smaller.
But
I might (accidentally), put more tiles in each database
SO
I need to know if it is a file size limitation, or a tile ammount limitation, before i make something that does not work, or causes failures.

If i keep the file sizes below 1GIG, but there is 150,000 tiles anyway, will it fail?