Deleted Rows Flashback : unable to read data - table definition has changed

Hi All,
Its Really Important.
I Unfortunately truncated a table using
Trancate table mytable;
and Made a alter table to decrease data pricision length.
But i Need the tabla data back,
i used the below command to get deleted rows, it shows error.
query : select * from pol_tot versions between timestamp systimestamp-1 and systimestamp;
error : ORA-01466: unable to read data - table definition has changed
query : flashback table pol_tot to timestamp systimestamp - interval '45' minute;
error : ORA-01466: unable to read data - table definition has changed
Kindly Share your ideas How Can i Get thoose Deleted Records.
Edited by: 887268 on Jul 8, 2012 12:26 AM

BluShadow wrote:
Khayyam wrote:
Flashback dont works after DDL. Truncate command is DDL. Only recover from backup can help.Please don't spread untrue statements.Working of flashback after Drop command is so clear to say. I mean such DDL commands as CREATE, ALTER, TRUNCATE and so on...
"Remember that DDLs that alter the structure of a table (such as drop/modify column, move table, drop partition, truncate table/partition, and add constraint) invalidate any existing undo data for the table. If you try to retrieve data from a time before such a DDL executed, you will get error ORA-1466. DDL operations that alter the storage attributes of a table (such as PCTFREE, INITRANS, and MAXTRANS) do not invalidate undo data."
[http://docs.oracle.com/cd/B28359_01/appdev.111/b28424/adfns_flashback.htm#BJFJHDAG]

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Thanks in advance!
Javier
En caso de que la respuesta te sirva, porfavor, márcala como válida
Muchas gracias y suerte!
Javier Jiménez Roda
Blog: http://jimenezroda.wordpress.com

hi Javier,
I changed your code like this:
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) and this post (http://stackoverflow.com/a/5420788).
Regards,
Will
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