SnapCenter Plug-In for SAP HANA fails to uncatalog during a file-based backup in SnapCenter 4.0P2

Applies to

• SnapCenter Server 4.0P2
• SnapCenter Plug-in for SAP HANA (4.0P2)
• SAP HANA 2.0

Issue

2018-10-19T23:20:24.7820098+02:00 INFO  SnapManagerWeb_3499 PID=[6424] TID=[183] [UncatalogBackup] Start calling SAP Hana uncataloging https://hanahost.domain.com:8145/Pro...ncatalogBackup
2018-10-19T23:20:24.8602201+02:00 DEBUG SnapManagerWeb_3499 PID=[6424] TID=[183] Request Data: ****************************

<SmUncatalogBackupRequest xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><HostEx><Nameâ?¦

2018-10-19T23:20:24.8602201+02:00 INFO  SnapManagerWeb_3499 PID=[6424] TID=[183] SmWebClient : webRequest.ServicePoint.ConnectionLimit set to 1500
 

2018-10-19T23:20:45.9077404+02:00 ERROR SnapManagerWeb_3499 PID=[6424] TID=[183] WebException Encountered, Response null
2018-10-19T23:20:45.9077404+02:00 ERROR SnapManagerWeb_JobID PID=[1234] TID=[567] Exception in method: InvokeXML.
System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 10.10.10.10:8145
where 10.10.10.10 is the SAP HANA Plug-in host.
Note also the 21 second gap between call and non-response (connection break).