You should have enough information from the dump to work out the records involved.
It appears session 9 has updated TRANSLINES and is wanting to update POTRANS while session 100 has updated POTRANS and is wanting to update TRANSLINES.
You have the ROWIDs (AAAKimAAGAABe6VAAR,AAAJuuAAGAAAm16AAf) that are the issue, so you can even look at the records.

What you probably want to find out is what program is behind sessions 9 and 100. If possible, they should both lock the tables in the same order. If that isn't possible, you might just want to make transactions as fast as possible to reduce the probability of a deadlock.

PS. The UPDATE POTRANS looks a bit odd using a bind variable for the ID but literals for trans_num and locn_id.