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Oracle Database Replication

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Oracle Database Replication

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  1. Replication of Oracle Database in a Nutshell

  2. Oracle is one of the most popular on-premises RDMS (Relational Database Management System). One reason why it is so widely used is that it is an ideal tool for data analysis and managing ETL pipelines as a complete querying layer. Critical applications can be effectively operated on Oracle as it has inherent stability and short recovery times. 

  3. Before moving to Oracle database replication, it is necessary to understand the basis of database replication in general. Database replication is where data at the source is replicated and stored in various locations. This increases data accessibility across networks. Database replication is very effective in both servers and standalone computers and this data can be stored in cloud-based hosts, on or off-site, or within the same system. Almost all database technologies such as Microsoft SQL Server or Oracle database have in-built features for replication.  To optimize the Oracle database replication process, specific tools are deployed. In the first method, the full dump of the table that is to be replicated is taken at periodic intervals to generate a snapshot of the needed format. The dump file that is generated is used to load another table that is located in another data warehouse. The file can also be used to perform any other customized transformations.

  4. In the second method, triggers are configured to be executed when pre-set events occur. An example of trigger configurations is when a table is modified in Oracle database replication, a record is inserted into another table. This is then used to replicate the Oracle data to a target database through a custom code.  However, the method selected for Oracle database replication depends on the specific needs of an organization.

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