NZE Database Error Messages NZE-28787: private key encryption failure August 19, 2015 mpbod NZE-28787: private key encryption failure Cause: This may have been caused by an error in the mkwallet parameter of the sqlnet.ora file. Action: Enable tracing to determine the exact cause of this error. Contact Oracle customer support if needed. Back to previous menu Share this:Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pocket (Opens in new window)