If you deleted/updated data by mistake in Oracle. and try to recover data from flashback query. Your query may fail with ora-01555 error:
SQL> l
1 declare
2 cursor c is select * from testt2 as of scn 5385449;
3 begin
4 for i in c loop
5 null;
6 end loop;
7* end;
SQL> /
declare
*
ERROR at line 1:
ORA-01555: snapshot too old: rollback segment number with name "" too small
ORA-06512: at line 4If you have no backup, then you cannot recover data in this case .
We provide a better flashback service, it can recover part of deleted data . for example .
SQL> set serveroutput on;
SQL> exec better_flashback_table_save('TEST2','TESTT2',2843925,'MYTVSAVE3');Table TEST2.TESTT2 @ scn 2843925 find 5568 rows, copied to TEST2.MYTVSAVE3
PL/SQL procedure successfully completed.
The service step
1. first expand your undo_retention parameter
Alter system set undo_retention=86400;
Expand all undo datafiles
Alter database datafile 'undofile' resize BIGGER_SIZE;
The first step avoid undo extent reused by system
2. we will provide procedure better_flashback_table_query, check how many rows can be recovered
3. we will provide procedure better_flashback_table_save, which will recover data and stored in new table .
4. we can also take advantage prm-dul undelete function to help you recover data . Please checkhttps://youtu.be/hIYutqNcVBI
We provide above as a service . [email protected]
DBRECOVER Recovery Options
For Oracle incidents, start with the DBRECOVER for Oracle trial to verify table visibility, row previews, and export readiness on copied datafiles. For MySQL and InnoDB incidents, DBRECOVER for MySQL is free software and can inspect.ibd files, ibdata1, and database directories locally.
When the case is urgent, preserve the original files first, work from copies, and contact paid emergency support with the database version, platform, error messages, file list, and recovery objective.