You find there's an error or warning flag shows in System view, and the error messages probably like below.
SAPControl request failed: Connection time out: connect (local port xxxxx to address 0:0:0:0:0:0:0:0 remote port 50014 to address <DB server Ip address> <DB Host name>
The local port number changes when you refresh.
And you may find the other services like daemon, nameserver and indexserver are running fine.
HANA Database (Revision/SPS independent)
SAP HANA Studio (Revision independent)
sapstartsrv; HANA Studio; sapcontrol; connection time out; SAPControl request failed; , KBA , HAN-STD-ADM-DBA , SAP HANA Studio (Eclipse) Admin Tooling , HAN-DB , SAP HANA Database , Problem
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