Oracle database restart for unknown reason
the information as below in trace log:
"2023-12-11T08:07:04.659445+07:00
Shutting down ORACLE instance (abort) (OS id: 21496)
2023-12-11T08:07:04.668760+07:00
Shutdown is initiated by oraagent.bin@cts-hkdb2.cvn.canon.co.jp (TNS V1-V.
License high water mark = 209
USER (ospid: 21496): terminating the instance
2023-12-11T08:07:06.789772+07:00
Instance terminated by USER, pid = 21496
2023-12-11T08:07:12.785265+07:00
Instance shutdown complete (OS id: 21496)
2023-12-11T08:14:13.932245+07:00
Starting ORACLE instance (normal) (OS id: 10119)
2023-12-11T08:14:14.285298+07:00"