The CMN Directory Connector "ExecDb" SQL database stores data from previous directory sync operations. Over a period of time, the "ExecDb" database my reach the database size limit of SQL Express.
WORKAROUND
If the size limit of SQL Express is reached, then we would recommend moving the CMN "ConfigDb" and "ExecDb" databases to a full version of SQL Server.
STATUS
CMN 3.6 and later have been enhanced to allow for the configurable cleanup of SQL execution histories.
