I am 11g OCP and I work as a Senior DBA at Ministry of Justice of Georgia.
6 How to troubleshoot enq: TX - row lock contention? may 30 '12
3 My database dramatically increased in size. Why? may 11 '12
3 Oracle RAC on Virtual machine apr 2 '12
3 ORA-01113: file # needs media recovery ORA-01110 sep 9 '11