Not at present. There a number of differences in core attributes. You would have to write a program that reads the log from one database, keeps track of entity ids, drops or alters unsupported things (e.g. the bytes values type) and transacts into the other database.

Thanks Stu 🙂 I'll look into that

I think that limit only applies to heterogenous tuples?

https://docs.datomic.com/on-prem/schema.html#homogeneous-tuples vs https://docs.datomic.com/on-prem/schema.html#heterogeneous-tuples

Well I thought so too, but apparently I am unable to transact tuples larger than 8 values using :db.type/tuple :

(d/transact conn [{:db/ident       :weights
                   :db/valueType   :db.type/tuple
                   :db/tupleType   :db.type/double
                   :db/cardinality :db.cardinality/one}])
(d/transact conn [{:weights [0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8]}])
(d/transact conn [{:weights [0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9]}])

https://docs.datomic.com/on-prem/schema.html#tuples says: A tuple is a collection of 2-8 scalar values

that is unfortunate

consider using bytes and Double/doubleToLongBits?

I’ll give this a try thank you!!

or DataOutputStream

(http://java.io class)

Thanks a lot

guess it's just a matter pointing the transactor to the data dir