how would coalescing help even if there were a lot of smaller free
extents? Oracle would do the coalesce automatically, there would be no
difference between manually coalescing or allowing Oracle to do it when
a new extent was needed.
- Richard Ji <richard.ji_at_mobilespring.com> wrote:
> Coalescing might help if there are many smaller free extents
> that can be coalesced. But that still doesn't solve Jay's problem.
> Because he doesn't want the table to extent at all since he just
> deleted
> 2 million rows so there are plenty of space within the segment
> itself.
> Those free blocks should be used, unless he is doing a direct path
> insert
> which will only use space above the HWM.
>
> Richard Ji
>
> -----Original Message-----
> Sent: Friday, November 29, 2002 2:05 PM
> To: Multiple recipients of list ORACLE-L
>
>
> did u coalesced the tablespaces?
>
> -----Original Message-----
> Sent: sexta-feira, 29 de Novembro de 2002 17:59
> To: Multiple recipients of list ORACLE-L
>
>
> Okay, I can't figure this one out. Earlier this week I got an
> ORA-1653:
> unable to extend table on a really big table. However this was just
> after I
> had deleted over 2 million rows in the table and we were only
> inserting
> 30,000.
>
> After reanalyzing the table I saw the following stats in DBA_TABLES:
>
> num_freelist_blocks: 2266966
> avg_space_freelist_blocks: 3895
>
> Unless I'm misreading this I should have had over 8Gig available for
> inserts.
>
> We tried the insert again and got the same error so I added a
> datafile and
> it went through (using about 40Meg of space in the new datafile).
>
> Why isn't it making use of the existing blocks on the freelist?
>
> Oracle 8.1.7.2
> Solaris 2.6
> PCTFREE = 10
> PCTUSED = 75
> Block Size = 4K
>
>
> Jay Miller
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Received on Fri Nov 29 2002 - 16:28:40 CST
