What should be needed to become a dba

Hi all,
I have been joined in a medium level company as a java developer.
After 7 months they put me in oracle team.
But our company doesn't use oracle efficiently. So i don't have much knowledge in oracle concepts.
But day by day i love oracle and forget java. I wish to move my carrier with oracle.
Now my question is,
To be selected as a oracle DBA and working as oracle DBA in MNC's, In which topics i should be strong ? what are the things i should know in oracle?
pls guide me

Hi,
Start form here Tahiti
Choose the database version and Read. Create some test database on your personal Machine using Virtual Box and Play with It
HTH

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