Hello,
Could be that you are running into the Timezone issue on Linux with MySQL.
Next time you attempt an upgrade, check the iMC\deploy\log\dmalog.txt and if you see any error like:
Caused by: com.mysql.cj.exceptions.InvalidConnectionAttributeException: The server time zone value 'CEST' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.
Here is a workaround for now:
1) Login to MySQL command line (as root)
2) SET GLOBAL time_zone = '+3:00';
(where '+3:00' should be changed to this server's timezone offset)
See also https://stackoverflow.com/questions/26515700/mysql-jdbc-driver-5-1-33-time-zone-issue
There is another issue that is triggered by NTA, if you have that module installed. It requires upgrading NTA to E0506P02 (to be released shortly).
That said, as I wrote in another post:
It would probably be better not to upgrade to E0703 if you haven't started already, unless you need the features/fixes. There are two known issues with RHEL and MySQL, and I posted the workarounds/fixes here (and in the other thread), and for one of them you would need the new NTA patch (to be posted).
There may be a new base version coming out relatively soon to address the known issues - but don't quote me on that as I'm not involved in it, and you would need to contact your HPE Sales/Account Management for any details about future versions.