Updating data in a view oracle

Flashing back is quicker and easier than unpicking the errors if you have unexpected failures.Using a guaranteed restore point ensures you have this fall back.Restore points make it easy to reset after test runs.

updating data in a view oracle-73

So increasing the retention means you’ll need to make this larger to support flashback.

This could lead to a big jump in storage requirements.

It’s useful to be able to compare a table before and after a release. If you can compare the before and after states of the table it can make diagnosis simple. So if you’ve used this method to wipe a table, there’s no way back! This means you have a permanent store instead of relying on undo. You can do this with the following SQL: One word of caution: when you enable it, Oracle creates history tables. So this setup can fail without giving you an error. This enables you to see dropped objects for all users. Note that the recyclebin only applies when you use drop table. drop user or drop tablespace, they are gone for good.

Fortunately, you can overcome both of these issues. Be sure to check this is working before you rely on it! These solutions are all great if you’re dealing with a single table. What if someone managed to run a truncate cascade wiping out your whole database?

So you may be unable to go back to the time of a particular restore point.

With it, Oracle ensures you can always recover back to the time you created it.

In either case you'll want to get your data back as quickly as possible.

Restoring from backup can be a time consuming process. Luckily Oracle can help you recover from many mistakes quickly - without needing a backup! Using Flashback Table, you can return a whole table to an earlier state.

As with Flashback Database, Oracle stores the logs to support this in the fast recovery area.

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