Both of your wiki edits were approved (ORA-00911, ORA-06512) and both of your wiki excerpt edits were rejected (ORA-00911, ORA-06512). That unfixed edge case of that bug you linked seems responsible for the wikis not showing up.
I'm just guessing, but I suspect they were rejected because they are uncommonly specific as tags go. There are relatively few tags about specific errors, and particularly few for error codes (though I see that there are tons of ora-* tags already).
Your wiki edits were probably approved because people didn't want to reject the useful content, but people felt less bad about rejecting the excerpts.
edit: I found a relevant older discussion: Do we really need a tag for every error code?. There doesn't seem to be a strong consensus. That's may be why you received the mix of acceptance and rejection.