Currently on HCS 8. The host disk where the database was writing on was full. This cause an issue with the Analytics tab to throw an error saying:
Unable to obtain database information. The database is not running properly. Restart the database. (maintenance information=com.hitachi.hscs.focus.core.fw.exception.QueryException: KAIC61002-E The database is blocked.)
I tried to restart HCS + database and also tried to just reboot the whole system. HCS comes up all tabs are okay except for the Analytics tab.