Qlik Enterprise Manager fails to reconnect with Qlik Replicate server: SYS-E-SESS_LOST

[Michael_Litz]

After upgrading Qlik Enterprise Manager to 2022.11, increased connection errors to the Qlik Replicate server can be observed, with the connection terminating approximately every 30 minutes.

The following error is logged: 

3 2023-12-19 06:09:06 [ServerDto ] [ERROR] Failed to get monitoring data for server: 172.29.73.29. Message:'SYS-E-SESS_LOST, The client is not connected to the Server. Please connect and then try again.'''.

Resolution

This is a known defect. The fix will be included in the next possible Qlik Enterprise Manager release (tentatively 2023.11 SP03).

Fix Description: Added auto-reconnect flag where it was missing to allow QEM to better manage the connection drops and attempt to re-establish the EM<-->QR communication, especially in high-load situations.

Workaround:

The following are test patches that address this issue. Please contact support to obtain the test patch.

• QEM: QlikEnterpriseManager_2022.11.0.919_X64
• QEM: QlikEnterpriseManager_2023.5.0.689_X64
• QEM: QlikEnterpriseManager_2023.11.0.368_X64

Environment

Qlik Enterprise Manager 2022.11.0.634