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We had to change the hostnames on Exadata with one of the customers. It is a well known fact that RAC doesn’t like such changes – we had to reconfigure the cluster and after the whole process I found the funny
Oracle 12c offers a lot of fascinating new features – among them (at last) "FETCH FIRST n ROWS ONLY" syntax. http://www.oracle-base.com/articles/12c/row-limiting-clause-for-top-n-queries-12cr1.php Out of curios
My experience shows that you don’t have to know the DBID now for restoring contorlfile from backup. If I know the name of backup piece, that contains controlfile I can do the following scenario: