"[2,002] No connection. Contact the administrator." is seen in the ApplicationLog.log on ThingWorx Platform

• Cannot access ThingWorx Platform
• Was unable to access ThingWorx Platform for a short period of time
• ThingWorx Platform seems to have temporarily disconnected from the Database
• ThingWorx seemed to recover automatically after being unavailable for a short period of time
• Following errors are seen within the <ThingworxStorage>\logs\ApplicationLog.log file: 

[L: ERROR] [O: c.t.p.p.PersistentPropertyDataProcessor] [I: ] [U: SuperUser] [S: ] [T: pool-15-thread-3] Error executing batch update of persistent properties
..
[L: WARN] [O: c.m.v.c.i.NewPooledConnection] [I: ] [U: SuperUser] [S: ] [T: pool-15-thread-18] [c3p0] A PooledConnection that has already signalled a Connection error is still in use!
[L: WARN] [O: c.m.v.c.i.NewPooledConnection] [I: ] [U: SuperUser] [S: ] [T: pool-15-thread-18] [c3p0] Another error has occurred [ org.postgresql.util.PSQLException: This connection has been closed. ] which will not be reported to listeners!
[L: ERROR] [O: c.t.p.ThingworxDefaultTransaction] [I: ] [U: SuperUser] [S: ] [T: pool-15-thread-18] Could not commit the transaction.
[L: WARN] [O: c.m.v.a.ThreadPoolAsynchronousRunner] [I: ] [U: ] [S: ] [T: C3P0PooledConnectionPoolManager[identityToken->2zujb8ae8uod6kp223lu|74b548df]-AdminTaskTimer] com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@56b0b57f -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
...
[L: ERROR] [O: c.t.p.p.BatchStreamEntryProcessor] [I: ] [U: SuperUser] [S: ] [T: pool-3-thread-5] Error executing batch
...
[L: ERROR] [O: c.t.p.p.PostgresModelExceptionTranslator] [I: ] [U: System] [S: ] [T: pool-9-thread-1] [message: [2,002] No connection. Contact the administrator.]