SQLException when concurrently moving messages to DLQ

Messages that exceed their redelivery count will be moved to dead letter queue.
If this move of messages to DLQ happens concurrently, it will raise

16:38:19,233 | WARN  | 99.1:55704@61616 | JDBCPersistenceAdapter  | 219 - org.apache.activemq.activemq-osgi - 5.11.0.redhat-630224 | 
JDBC Failure: org.apache.commons.dbcp.PoolablePreparedStatement with address: "..." is closed.

Full stack trace in comment below.
The broker typically shuts down as a result of this exception.