Good Sites for Oracle DBA

Below are very good Oracle DBA site one can use to improve DBA skill.

http://www.idevelopment.info
http://www.oracle-base.com
http://www.akadia.com


Campare various RDBMS
https://en.m.wikipedia.org/wiki/Comparison_of_relational_database_management_systems

Oracle and MSSQL
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https://www.mssqltips.com/sqlservertip/3597/comparison-of-sql-server-and-oracle-terminology/


For various oracle issue, solution with good discussion, One can follow Thomas Kyte's site a renowned Oracle expert.
Oracle forum is also a very good source, which cover various topics across Oracle database and tools etc.

http://www.akadia.com
https://forums.oracle.com/
http://asktom.oracle.com/
https://support.oracle.com/   But its not free, Official site for Oracle's customer.

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