Hi Ai Na

SInce there is not any log file so we can't know the exact root cause of your issue.

The potential root cause: content data file was damaged.

 possible reason:
        1.> anti-virus software scan
        2.> stop idol server is not graceful

Better to open support case and investigate it.

Thanks

Thanks for the feedback, Simon.

We will try to check further and consider to open the support case.

Thanks

I think the re-index has to be performed as suggested from support team further.

Thanks

Thanks Simon.

We are taking the measure for the services stop not gracefully (assumption). The startup type of services changed to Manual and there is an automation to start the services with expectation after server patching and reboot completed, the services will be bring up accordingly by the automation. We will monitor for the next schedule reboot and discuss the next action plan.