Messaging Engine data store connection is lost

Configuring messaging engine and server behavior when a data store connection is lost

 https://www-01.ibm.com/support/knowledgecenter/SSAW57_7.0.0/com.ibm.websphere.nd.doc/info/ae/ae/tjm_dsconnloss.html

Messaging engine troubleshooting tips

https://www-01.ibm.com/support/knowledgecenter/SSEQTP_8.5.5/com.ibm.websphere.nd.doc/ae/rjk_prob0.html

CWSIS1538I, CWSIS1546I: Messaging engine failover operation fails due to lost database locks

http://www-01.ibm.com/support/docview.wss?uid=swg21434092