WebJun 19, 2007 · Flashback Table uses information in the undo tablespace to restore the table. Therefore, UNDO_RETENTION parameter is significant in Flashing Back Tables … WebThe undo_retention parameters specified (in seconds) the amount of undo images to keep inside Oracle for Flashback queries. Oracle claims that you can set this value to an entire day (86,400 seconds), and be able to see prior image for a whole day.
Basic question to Undo/Undo Retention regarding EXPDP with Flashback ...
WebJul 26, 2013 · Undo on a table (and therefore the ability to do flashback queries) is removed when a DDL operation occurs for a table. So, if there is a quiet time on the table (during the night for example) you could alter the table (such as by adding a column that you immediately remove). WebApr 11, 2024 · Symptoms. Potential performance degradation and its resolution while doing Flashback queries with Joins on two tables. one can see that the two queries above look almost the same, except that in the former query, an AS OF SCN clause is used to operate the query on older versions of the table. Although the queries look similar at this level ... trutool tf 350
Undo activities in Oracle APEX - Stack Overflow
WebAs with Flashback Table, you can use Flashback Drop while the database is open. Also, you can perform the flashback without undoing changes in objects not affected by the Flashback Drop operation. Flashback Table is more convenient than forms of media recovery that require taking the database offline and restoring files from backup. Note: Web3 hours ago · Arguably, the miniseries bites off more than it can chew and could have done without (or at least gone lighter on) the Koresh flashbacks, which serve the purpose of reminding the audience just how ... WebA. FLASHBACK LOGS are archived after a log switch. B. A database can be flashed back using SQL*PLUS. C. Queries and DML have the same FLASHBACK LOG overhead when flashback is enabled for a database. D. FLASHBACK DATABASE only uses FLASHBACK LOGS to get the database to the desired flashback time. E. It always generates REDO … tru time boots