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Can it still be restored after truncate in Oracle?

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Release: 2024-04-30 08:00:24
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The data cannot be restored directly after truncation. Truncation bypasses logging so data cannot be recovered using rollback or flashback queries. To avoid data loss, back up your database regularly and consider truncation operations carefully.

Can it still be restored after truncate in Oracle?

Can it be restored after truncate in Oracle?

Truncate is a DDL operation in Oracle that deletes all data in a table. Unlike the DELETE statement, TRUNCATE is not logged, so rollback cannot be used to recover data.

So the answer is:

Once the data is truncated, it cannot be restored directly.

Detailed explanation:

  • Truncation:

Truncation deletes table data directly from the data file , bypassing redo logs and rollback segments. It is much faster than the DELETE operation, but is not reversible.

  • Recovery not available:

Because truncation is not logged, you cannot use flashback queries or rollback to recover data after truncation.

Precautions:

To avoid data loss, it is important to take the following precautions:

  • Back up your database regularly.
  • Think carefully before truncation operations.
  • Test the truncation operation in a test environment.
  • Use partition tables to separate data so that only the data that needs to be deleted is truncated.

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