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Generally these terms<br />
Production: The environment where the actual business data resides and where the actual transactions are happening from the end users.<br />
Pre-Production: An environment with exact similar structure as that of production env, But not with complete data as that of production. Used to do the final testing of code/structural changes that are going to be applied to production.<br />
<br />
Now, what exactly is the question for?
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Generally these terms
Production: The environment where the actual business data resides and where the actual transactions are happening from the end users.
Pre-Production: An environment with exact similar structure as that of production env, But not with complete data as that of production. Used to do the final testing of code/structural changes that are going to be applied to production.

Now, what exactly is the question for?

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Actually i got &nbsp;a project as an oracle dba mostly of pre-production..<br />
So What should I keep in mind<br />
<br />
Thanks dear exerts for your response
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Actually i got  a project as an oracle dba mostly of pre-production..
So What should I keep in mind

Thanks dear exerts for your response

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what is the difference between production and pre-production environment of an dba oracle10g
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what is the difference between production and pre-production environment of an dba oracle10g

production and pre-production environment

Oracle is an object-relational database management system. It supports a large number of languages and application development frameworks. Its primary languages are SQL, PL/SQL and Java, but it also includes support for C and C++. Oracle also has its own enterprise modules and application server software.