# Same infra, multiple transactors?

**URL:** https://forum.datomic.com/t/same-infra-multiple-transactors/1090
**Category:** Datomic Pro
**Created:** [July 25, 2019, 6:47am UTC](https://forum.datomic.com/t/same-infra-multiple-transactors/1090 "2019-07-25T06:47:40Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![fdserr](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.datomic.com/fdserr/32/329_2.png) [@fdserr](https://forum.datomic.com/u/fdserr)
#### Post date: [July 25, 2019, 6:47am UTC](https://forum.datomic.com/t/same-infra-multiple-transactors/1090/1 "2019-07-25T06:47:40Z")

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Hello,

Is it possible and 200% safe to use a single set of infra for several transactors (with different dbs) ? DDB table, role set, log bucket.

TY

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### Author: ![oscarlinusericsson](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.datomic.com/oscarlinusericsson/32/376_2.png) [@oscarlinusericsson](https://forum.datomic.com/u/oscarlinusericsson)
#### Post date: [April 17, 2020, 2:41pm UTC](https://forum.datomic.com/t/same-infra-multiple-transactors/1090/2 "2020-04-17T14:41:10Z")

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For every dynamodb **table** there can only be one **active** transactor. If you start several transactors, the other ones will wait for the first one to fail to write heartbeats to the table and take over the job as transactor.

However, in each dynamodb table there can be several datomic databases. But they all go through the same single transactor for doing transactions.

If you want several transactors since the systems are separated in some other way, they should probably use different dynamo db tables as well. I don’t know if it would be possible to share table, but I cannot really see what would justify it.