Do you get anything when running evconfig from expert? If so, maybe try enable it there and come back to smart console, install database and test.
Like below:
[Expert@MANAGEMENT:0]# evconfig
Please select the installation you would like to update
1) SmartReporter. (disabled, select to enable)
2) SmartEvent Server. (disabled, select to enable)
3) SmartEvent Correlation Unit. (disabled, select to enable)
4) SmartEvent Intro. (disabled, select to enable)
5) SmartEvent Intro Correlation Unit. (disabled, select to enable)
6) Save and exit.
7) Exit without saving.
Best,
Andy