June 19, 2019 Update from Blackboard Support:
Due to unforeseen circumstances, AWS has cancelled the upgrade to Postgres 9.6.11 for all of their clients at this time. More details will follow when we have more information.
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The Blackboard Learn System will be unavailable for a few minutes on Tuesday, June 18, 2019 between 3-3:30 a.m. CDT for a Postgres database upgrade. This is an automatic upgrade performed by AWS (Amazon Web Services - the cloud computing service that hosts Blackboard Learn SaaS environments) to apply a critical security patch to upgrade the Postgres database from version 9.6.9 to version 9.6.11. It is recommended that end-users do not perform critical work (create content, take tests, submit assignments, grade, etc.) during this maintenance period.
Note: This was originally schedule for Tuesday, June 11, 2019 between 3-3:30 a.m. CDT; however AWS did NOT perform the maintenance and rescheduled it for June 18, 2019.