Re: Is using OPTIMAL in RBS ORA-1555 prone?

On Wed, 20 Feb 2002 18:22:03 +0100, Svend Jensen <Master_at_OracleCare.Com> wrote:

>Tianhua Wu wrote:
>
>> , some consistent lookups in a
>>
>>>rollback segment was just deallocated by optimal, just before you got
>>>there - the database engine has no problems finding the data, they are
>>>there, well preserved in a deallocated rollback segment.
>>>
>>
>> Are you sure about that? That is contradict to my experience. I
>> understand that the info is still there. However Oracle will use a
>> block that does not belong to the segment anymore? I definitely need
>> proof for this claim. If this is true, you should have no trouble get
>> data back right after you truncate a table as long as nobody else use
>> the space (Oracle can just use similar mechanism)! Of course you can
>> say flash back query for 9i, but that is different story.
>> Unfortunately I do not have a testing database now.
>>
>
>Truncate doesn't generate rollback, and yes the data is still there on
>the file on disk, but you can't get to it with std. oracle ways.
>And i'm not sure all versions on all platform behave alike, so a test is
>needed with your version on your platform.
>/svend

Truncate is DDL, so it is committed automatically

Regards

Sybrand Bakker, Senior Oracle DBA

To reply remove -verwijderdit from my e-mail address Received on Wed Feb 20 2002 - 15:59:53 CST