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This bug has been copied from bug #1466073 and has been proposed to be backported to 7.4 z-stream (EUS).

I tested this bug on pki 10.4.1-12.el7_4 build.

Steps i perform to test:

1. Created the certificate request using certutil and /var/lib/pki/topology-02-CA/alias directory.
2. Submitted the certificate request using pki command and caOCSPCert profile and /var/lib/pki/topology-02-CA/alias directory..
3. Approve the certificate request, Save the certificate in the file. 
4. Change the OCSP server certificate with the following command:

~ # pki-server subsystem-cert-update ca ocsp_signing -i topology-02-CA --cert /tmp/ocsp_cert.pem 

5. Restart the CA instance.

CA instance is started successfully.

Verifying this bug.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:2575