Concurrent transactions in different sessions by single user

Hello,

 

We are happily using sessions to isolate active folder setting in concurrent requests issued by the same user. However, if we introduce transactions in the concurrent requests, submit_transaction fails for both requests with

 

Exception caught in System::urn:iControl:System/Session::submit_transaction() Exception: Common::OperationFailed primary_error_code : 16908289 (0x01020001) secondary_error_code : 0 error_string : No transaction is open to submit.

 

Is this a supported scenario - two simultaneous transactions in two different sessions for the same user? If not, are there alternatives to implement this behavior? We are using iControl-11.3.0 for Java.

 

Ivaylo