How can data from a table be backed up in Oracle?

1 year ago
Olivia Parker
2 minutes

To back up table data in Oracle database, you can use any of the following methods:

  1. Utilize Oracle’s built-in tool: Oracle Data Pump
  2. Export table data using the expdp command: expdp username/password@sid tables=table_name directory=directory_name dumpfile=dumpfile_name.dmp
  3. To import table data, use the impdp command: impdp username/password@sid tables=table_name directory=directory_name dumpfile=dumpfile_name.dmp
  4. Utilizing the SQL Developer tool:
  5. Connect to the Oracle database and select the table to backup.
  6. Select “Export” in the toolbar, then choose the target file type (such as CSV, SQL, etc.) and the location to save it.
  7. Click on “Next”, select the table to be exported, and set the export options (at this step, you can choose to export only data, export table structure, etc.).
  8. Click on “Next” to choose the format and encoding for the exported file.
  9. Click “Next” to confirm the export settings and begin the export.
  10. Use SQL statements.
  11. Create a new table using the CREATE TABLE statement with the same structure as the table to be backed up.
  12. Insert data from the original table into the new table using the INSERT INTO statement: INSERT INTO new_table_name SELECT * FROM original_table_name;
  13. You can choose to export the new table as an SQL file for backup, which can be used later for data recovery.

No matter which method is chosen, the backed-up data can be restored using the appropriate tools when needed or imported into other databases.

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