Hi Andreas,
Is your SAP HANA SP7 and beyond?
SAP-HANA catalog is maintained only for SP7 and beyond.
Following is the excerpt from logs specific to UnQuiesce operation (part of Backup)
The following highlighted statement is only executed if SAP SP6 or below is installed.
[2015-06-24 09:39:52,298] INFO: Application Unquiesce for plugin: hana
[2015-06-24 09:40:02,554] INFO: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:55 2015) Database unquiesce started.
[2015-06-24 09:40:02,555] INFO: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:55 2015) Deleting HANA database snapshot for [TST].
[2015-06-24 09:40:02,555] INFO: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:55 2015) Attemting to run [backup data drop snapshot] on [vmsaplnx21].
[2015-06-24 09:40:02,555] DEBUG: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:55 2015) Executing SQL sequence:
[2015-06-24 09:40:02,555] DEBUG: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:55 2015) backup data drop snapshot
[2015-06-24 09:40:02,555] DEBUG: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:59 2015) Command [su - tstadm -c "/hana/shared/TST/hdbclient/hdbsql -i 10 -n vmsaplnx21 -u SCADMIN -p xxxxxxxx -I /tmp/JSEsmYiXh4.sc"] finished with
[2015-06-24 09:40:02,555] DEBUG: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:59 2015) exit code: [0]
[2015-06-24 09:40:02,555] DEBUG: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:59 2015) stdout: []
[2015-06-24 09:40:02,555] DEBUG: [vmsaplnx21:9090 (4.1.1.1)] (Wed Jun 24 07:39:59 2015) stderr: []
Thanks and Regards,
Saravana