How to find out the size of files transferred over the SQL * Net?

I am trying to test the Advanced Compress (AC) for 11g Data Guard. When the AC is turned on, the archived log files are supposed to be compressed on the primary database server and sent over SQL*Net, then decompressed on the standby db server. We will see the file sizes are the same on both primary and standby servers. I want to verify that the AC works by monitoring how much data are sent over SQL*Net. Per Oracle, AC uses 35% less of the bandwith. That means the size of the files transferred should be at least 65% of the original size.
Is there a way to find out the size through Oracle utilities? If not, how to find out by OS utilities? OS is Solaris 5.10.
Thanks.

I'm not sure this can be done via SQL*Net, but a network packet sniffer between the two servers should be able to help - you might want to contact your network team.
HTH
Srini

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