Oracle DBA Online training in India

Oracle DBA Online training in India

               
Oracle dba online training in india, Oracle dba online training classes in india -  with 100% placement support - Fee Is 15000 Rs - web trackker is the best Oracle DBA online training  in India, Delhi, Ghaziabad , if you are interested in Oracle DBA industrial training then join our specialized training programs.Oracle dba online training in india, Oracle dba online training classes in india, if you are interested in Oracle DBA industrial training then join our specialized training programs now.
It is the relational database management system. The main objective of this is to store, manage and retrieve information efficiently to deliver high performance. It is also termed as RDBMS or simply Oracle. Oracle consists of various software mechanisms to achieve maximized data concurrency, high performance for maximum productivity for multi users in database environment.
Some of the key features of Oracle DBA are:
·         Database administration is not a task of single person, but handled by a group of specialists
·         The first ever database suitable for enterprise grid computing
·         works on grid-based architecture.
In Oracle, there are three basic categories of physical files used to store information. These are –
File Type
Description
Data files
Contains the data required to start the database engine
Control files
Storehouse of metadata of the database used by the Oracle engine
Redo log files
Used to store the changes made to the database
Parameter files
Remains in the machine on which Oracle database server executes
To Learn Oracle DBA, it is required to understand the basic terminologies used in it. Database Administrators  DBA’s  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.
Oracle dba online training in india : 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, MySQL database etc..

  • Instance – It is defined as the background processes and memory structure used to retrieve data from a database.
  • Process- Also termed as task or job, is a running instance. There are two types of processes in Oracle database system namely, Oracle processes and User processes. There is no need to use any operating system command to interact with the database.
  • Buffer Cache – It is SGA component which acts like a buffer to store the data being customized or queried. It stores the most recently or frequently used data in memory which improves the performance. All the user processes that are connected to the database share an access to it.
  • Shared pool- It captures information to be shared with users. For example: stored procedures, SQL statements etc can be cached for reusability and fast access.
  • Redo Log Buffer- It maintains a log of changes that are made in the database. The redo log files run in circular motion and get overwritten. So, to maintain the recoverability of the database for longer duration, they are archived into archive logs. Therefore, redo log helps to recover an instance when there is a system failure. This improves the performance and functioning of the database system.
  •  Large pool- It is the optional area that offer memory allocations for large processes, like recovery operations and Oracle backup.
  • Locks- For controlling the simultaneous access to data resources, locks are used.
The database consists of logical and physical structures. Because these structures are separate, the management of physical storage of data does not affect the access to logical structures.
Above mentioned information is required to get the basic understanding of the database. We have tried to cover all important parameters and terms used in Oracle.

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