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Home -> Community -> Mailing Lists -> Oracle-L -> Re: truncate a table with many extents
Monitor the values in USED_UBLK and USED_UREC in V$TRANSACTION (i.e. number
of undo blocks and undo records used by the transaction); I believe
USED_UREC comes pretty darn close to tracking the number of extents. Close
enough, anyway...
You can get to V$TRANSACTION from V$SESSION by joining V$SESSION.TADDR to V$TRANSACTION.ADDR. Hope this helps...
on 5/5/04 3:28 PM, Adams, Matthew (GE Consumer & Industrial) at MATT.ADAMS_at_GE.COM wrote:
> I'm truncating a table with around 14,000 extents
> on a 7.3.4 database on a slow machine.
> (Please don't ask how this happened, it's too=20
> painful to re-live.)
>
> Is there anyway to determine how far the truncate
> has gotten at any given point? I thought I might see
> changes in sys.fet$ or sys.uet$ as extents are de-allocated,
> but I'm not seeing that.
>
>
>
> ----
> Matt Adams - GE Appliances - matt.adams_at_appl.ge.com
> Just once, I wish we would encounter an
> alien menace that wasn't immune to bullets.=20
> - The Brigadier
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