Best practices for importing and exporting data

This page provides best practices for importing and exporting data with Cloud SQL. For step-by-step instructions for importing data into Cloud SQL, see Importing Data. For step-by-step instructions for exporting your data, whether it is in Cloud SQL or an instance you manage, see Exporting Data.

Best practices for importing and exporting

The following are best practices you should consider when importing and exporting data:

Don't use Requester Pays buckets

You cannot use a bucket that has Requester Pays enabled for imports and exports from Cloud SQL.

Use the correct flags when you create a SQL dump file

If you do not use the right procedure when you export data to a SQL dump file, your import might be unsuccessful. For information about creating a SQL dump file for import into Cloud SQL, see Exporting data.

Compress data to reduce cost

Cloud SQL supports importing and exporting both compressed and uncompressed files. Compression can save significant storage space on Cloud Storage and reduce your storage costs, especially when you are exporting large instances.

When you export a BAK file, use a .gz file extension to compress the data. When you import a file with an extension of .gz, it is decompressed automatically.

Tips for long-running import and export processes

Imports and exports into Cloud SQL using the import functionality (via a Cloud Storage bucket) can take a long time to complete, depending on the size of the database. This can have the following impacts:

  • You cannot stop a long-running operation.
  • You can perform only one import or export operation at a time for each instance.

You can decrease the amount of time it takes to complete each operation by using the Cloud SQL import or export functionality with smaller batches of data.

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