The Best Oracle DBA Certification Courses in India.

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ORACLE DBA

• INTRODUCTION
• Undo Introduction
• offline status Pending
• Rollback segments
• Features of Flashback
• Flashback Table
• Flashback query
• Flashback Version query

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ORACLE DBA

• What is bulk copy or BCP in oracle?BCP
  or bulk copy tool is one type of command line
  tool for unload data from database came into
  existence after oracle 8 .it is used to import or
  export data from tables and views but it will not
  copy structure of data same. Main advantage is
  fast mechanism for copying data and we can take
  backup of important data easily.

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ORACLE DBA

• This illustrates that like most industry
  buzzwords, Big is a cynical spin on what should
  more often be called awkward. A billion rows of
  normalized data in a well-designed schema might
  be large, but it's hard to see a big pay packet
  coming from running an aggregate function like
  Average on it. To be a lucrative skill there has
  to be some pain that you can overcome for your
  patient employer.

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ORACLE DBA

• Save point are used to divide a transaction
  into smaller parts. It enables rolling back part
  of a transaction. Maximum of five save points are
  allowed. Whenever we encounter error we can
  rollback from the point where we set our save
  point. This is useful for multistage transaction
  and conditional transaction where commit and
  rollback depend on certain condition. This is
  another commonly asked Oracle Interview Question
  and since save points are also available in other
  database e.g. SQL Server, some time Interviewer
  follow up with differences with other database as
  well.

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ORACLE DBA
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ORACLE DBA

• Database Administrators (DBAs) are responsible
  for the design, implementation, support and
  maintenance of computerized databases in today's
  organizations. The role also includes
  architecting, building and scaling databases for
  future data growth and capacity. They are also
  responsible for security, performance and
  availability of data to users and customers. .
• All the above tasks are performed with the help
  of a Database Management System (DBMS) and the
  leading and most widely used DBMS across the
  world today are the Oracle Database, Microsoft
  SQL Server, My SQL database etc. Out of the three
  DBMS technologies, Oracle Database is the most
  popular and widely used database in the world
  today.

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ORACLE DBA
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ORACLE DBA

• Each database requires at least one database
  administrator (DBA) to administer it. Because
  an Oracle database system can be large and can
  have many users, often this is not a one person
  job. In such cases, there is a group of DBAs who
  share responsibility.

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