You are seeing the following error in your Symantec Data Loss Prevention (DLP) logs and would like more information on what this error means.
connectOp select failed
This error usually indicates an issue with one or more Detection servers not being able to communicate with Enforce. In addition, you will see an "Unknown" status error in the Enforce console when you navigate to the System > Servers > Overview page.
For additional troubleshooting steps please refer to technote Detection Server showing a status of "Unknown".