Database (Sql or Oracle)

hi all i am a web developer in php and now i wanna to switch off my carrier from web developer into Database(sql or oracle),but i havn’t any experince in none of these tools (sql or orcale)and my educational background is Hindi hons. and also done web ciricullum from Niit (2 yrs diploma).
SO could anyone suggest me which is the best path for me to quit from developer into Database?is it possible for me to opt one of these tools as i havn’t any IT bachlor degree?