securefile size compress ratio

Hi all,

import from 11g -> 19c pdb : transform=lob_storage:securefile

I can't believe it. securefile compress a lot going from 300M -> 130K bytes

in 11g, blob

lobsegment SYS_LOB000099999C00010$$ 293,601,280    bytes

import to 19c securefile

lobsegment SYS_LOB000012345C00010$$ 131, 072 bytes

Anybody have used securefile before? Is that really compress that much?

Thanks. Appreciate your help!

friendly