You cannot see recent incidents in the Enforce Server web console, and it appears that response rules like SysLog are not occurring.
If you test with emails, they are blocked, but you do not see that incident in the console.
Release : 15.8
Varies, but incident queueing can occur for issues related to "post-processing" (response rules like Email Notifications, Send to Syslog, etc) in the Oracle Database.
If your Enforce Server is queuing incidents, check first to see if you are out of tablespace. If so, see the following KBs:
If those issues do not apply, and your Incident queue continues to build, try stopping services in order on your Enforce Server:
After DLP services have been stopped, restart the services on your Oracle Database.
After Oracle services are restarted, restart your Enforce Server services in order and confirm whether the incident queue starts dropping.
If these steps to not resolve your issue, please open a case with Technical Support.