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EXPORT DUMP SIZE TOO LOW WHEN COMPARED TO SCHEMA SIZE

in Database Administration (MOSC) 6 commentsAnswered

As part of an application migration activity in the test environment, we exported a schema whose total size, as reported in the database, is approximately 882 GB. However, the export dump file generated was only around 14 GB, which is a significant difference.

We would like to understand the reason behind this drastic reduction in dump file size compared to the actual schema size, especially since we are planning to perform a similar export activity in the production environment soon.

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