After installing new certificate directory server fails to start

Issue

• Directory server fails to start with errors

Starting dirsrv:
dir...
[22/Feb/2015:01:11:50 -0500] - SSL alert: Security Initialization: Can't find certificate (dir.example.com) for family cn=RSA,cn=encryption,cn=config    (Netscape Portable Runtime error -8174 - security library: bad database.)
[22/Feb/2015:01:11:50 -0500] - SSL alert: Security Initialization: Unable to retrieve private key for cert dir.example.com of family cn=RSA,cn=encryption,cn=config (Netscape Portable Runtime error -8174 - security library: bad database.)
[22/Feb/2015:01:11:50 -0500] - SSL failure: None of the cipher are valid
[22/Feb/2015:01:11:50 -0500] - ERROR: SSL Initialization phase 2 Failed.
                                                           [FAILED]
  *** Warning: 1 instance(s) failed to start