Thanks Tara for your prompt reply. While installing using softaculous, it installs new DB as well. But somehow, only few tables are getting created and always seeing “One or more database tables are unavailable.The database may need to be repaired”. I did repair several times but no luck.
Not sure if this is issue with Softaculolus or wordpress 4.3. It worked 3 days ago with wordpress 4.2.4 without issues.
