• Database Backup and Recovery User's Guide - Contents
  Oracle Help Center Online Documentation of Database Recovery and Backup techniques for Database administration
  in Oracle > Recovery with 11.2 11gr2 and backup catalog center controlfile database duplicate help oracle recovery rman
  Note: Recovery
• ORACLE - DBA Tips Corner
  eliminate duplicate rows easily. Great insight.
  in Oracle > Oracle Tips with cannot create duplicate index rows unique
• Duplicate code - Wikipedia, the free encyclopedia
  Duplicate code is a computer programming term for a sequence of source code that occurs more than once, either within a program or across different programs owned or maintained by the same entity. Duplicate code is generally considered undesirable for a number of reasons.[1] A minimum requirement is usually applied to the quantity of code that must appear in a sequence for it to be considered duplicate rather than coincidentally similar. Sequences of duplicate code are sometimes known as code clones or just clones, the automated process of finding duplications in source code is called clone detection.
  in Software Engineering with anti-pattern code computer duplicate multiple occurrences undesirable
• DUPLICATE database with RMAN
  duplicate database, which is a copy of the source database (or a subset of the source database) with a unique DBID. Because a duplicate database has a unique DBID, it is independent of the source database and can be registered in the same recovery catalog. Typically, duplicate databases are used for testing.
  in Oracle > Recovery with database databases dbid duplicate recovery rman testing

duplicate from all users