Oasis, Unrest and Battlegrounds Database Migration: Tues, April 7 @ 3:30am~2:00pm PDT [10 1/2 Hour Downtime]
Feldon 
Update: Unrest seems to be done, however Oasis is now 4 hours overdue on returning to service.
From the EQ2 Forums:
The Oasis server, the Unrest server and ALL US Battlegrounds will be brought offline on Tuesday, April 7, 2015 at 3:30AM Pacific* for server migration and maintenance. These servers are estimated to be unavailable until approximately 2PM Pacific.
Keep an eye on the EverQuest II forums and social media for status updates and for news if additional downtime is needed.
For those playing at home, this leaves Splitpaw, Storms, Valor, Butcherblock, Crushbone, Permafrost, Barren Sky and Harla Dar.
Around 3:30 PST Oasis database crashed, and has not returned.
The Oasis conversion is done but we’re currently investigating an issue with the server.