The outage during a migration version of a database is one of the main reasons influencing the decision to migrate or continue to maintain the same version but will have to cope with the problems already well known, as the lack of vendor support , repair flaws and lack of new features that have newer versions of databases.

Use “Oracle Golden Gate” for migration it is the most simple and effective to reduce the time of service interruption during a migration version of a database form .
During migration, the performance will not affect the source database because of the way the information is extracted changes , using the files ” redo logs” .

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