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Is DROP TABLE a DDL statement?
The DROP TABLE is another DDL (Data Definition Language) operation. But it is not used for simply removing data from a table; it deletes the table structure from the database, along with any data stored in the table.
Can we rollback drop command in Oracle?
Oracle Flashback Drop reverses the effects of a DROP TABLE operation. It can be used to recover after the accidental drop of a table. Instead, the table is renamed and, along with any associated objects, it is placed in the Recycle Bin of the database.
How do I recover a flashback DROP TABLE?
To perform the Flashback Drop operation:
- Connect SQL*Plus to the hr schema and obtain the name of the dropped table in the recycle bin.
- Retrieve the dropped table using the FLASHBACK TABLE …
- If the retrieved table had referential constraints before it was placed in the recycle bin, then re-create them.
Where does the table go in flashback drop?
Instead, the table is renamed and, along with any associated objects, it is placed in the Recycle Bin of the database. The Flashback Drop operation recovers the table from the recycle bin. To understand how to use Oracle Flashback Drop, you must also understand how the recycle bin works, and how to access and manage its contents.
When to use flashback drop in Oracle Database?
Oracle Flashback Drop reverses the effects of a DROP TABLE operation. It can be used to recover after the accidental drop of a table. Flashback Drop is substantially faster than other recovery mechanisms that can be used in this situation, such as point-in-time recovery, and does not lead to any loss of recent transactions or downtime.
When to enable or disable triggers in Flashback Table?
To retrieve the table employees back, use TO BEFORE DROP clause of FLASHBACK TABLE. By default Oracle database disable triggers during the flashback. These triggers are enabled when flashback operation is completed. You need to specify ENABLE TRIGGERS to keep the triggers enabled during flashback operation.
Do you have to enable row movement in flashback?
In addition, you must have the SELECT, INSERT, DELETE, and ALTER object privileges on the table. Row movement must be enabled for all tables in the Flashback list unless you are flashing back the table TO BEFORE DROP. That operation is called a flashback drop operation, and it uses dropped data in the recyclebin rather than undo data.