How to turn off siteminder temporarily

AFAIK this has nothing to do with siteminder. Appian will not work without its KDB files. You will have to recover them.

@shaoyongw

As of my knowledge, try to run the Checkpoint script again. If the transaction log exists it will create the kdbs again.
If the checkpoint fails in your scenario, we need to go for fresh installation of appian.

the transactions logs exist within the kdb's I would not run checkpoint. I suggest you open a support ticket unless you have a backup and can restore from that.

actually the server is up now but all the accounts are gone. By default, we can use Administrator to login but this account is not in siteminder so I have no account to login now. What I am asking is if I can switch the authentication from siteminder back to appian itself. I don't know where the configuration is.

Try this jsp to login with your Administrator account https://your URL /suite/portal/loginPage.none this should give you the ootb login page

@margaret, this url is also redirected to siteminder.

I would open a support ticket.