This illustration shows the configuration management page from which you can view database-stored logs of messages regarding transactions or errors occurring during OracleAS Certificate Authority execution.

It shows there is a search capability, with a text box into which you could type a search string.

The two categories of search, selectable from a drop-down menu, are Client Address and Message. The Client Address is an IP address. The Message can be any string you might want to search for, such as "successfully enrolled"  or  "certificate request accepted".