question

ERICDreksler-0723 avatar image
0 Votes"
ERICDreksler-0723 asked KyleXu-MSFT commented

Transport Mail Database: There are insufficient resources to perform a database operation. The Microsoft Exchange Transport service is shutting down. Exception details: Microsoft.Isam.Esent.Interop.EsentOutOfSessionsException: Out of sessions

Transport Service keeps shutting down after a minute or two with the following error.

Source: MSExchangeTransport
Event ID: 17018 (and 17107

Transport Mail Database: There are insufficient resources to perform a database operation. The Microsoft Exchange Transport service is shutting down. Exception details: Microsoft.Isam.Esent.Interop.EsentOutOfSessionsException: Out of sessions
at Microsoft.Isam.Esent.Interop.Api.JetBeginSession(JET_INSTANCE instance, JET_SESID& sesid, String username, String password)
at Microsoft.Exchange.Transport.Storage.DataConnection..ctor(JET_INSTANCE instance, IDataSource source)


Haven't been able to track down anything on this yet, any ideas?

office-exchange-server-administrationoffice-exchange-server-mailflow
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

1 Answer

KyleXu-MSFT avatar image
0 Votes"
KyleXu-MSFT answered KyleXu-MSFT commented

@ERICDreksler-0723

Based on the error message, this issue may related with the hardware for your Exchange server, here are detailed information about it:

Hardware requirements for Exchange 2013
Hardware requirements for Exchange 2016
Hardware requirements for Exchange 2019

If there exist a lot of mailboxes on your Exchange server, you also need to calculate the space required for the hard disk, you could use Exchange Server Capacity Calculator for it : Exchange 2019 , Exchange 2013 & Exchange 2016


If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

· 1
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

@ERICDreksler-0723
I am writing here to confirm with you any update about this thread now?
If the above suggestion helps, please be free to mark it as an answer for helping more people.

0 Votes 0 ·