Jerry,
Thanks for sharing script. We might have better systems as timing was never 
be a issue. I just tested my script on 2 systems and it ran between 34.5 
mseconds to 4.65 seconds...and on the basis of it is results we coalesce all 
such tablespaces. I prefer to keep pctincrease of tablespaces as 0(zero) and 
manually coalesing as and when it is required....

So have you ran your deletion job after coalesing or not?

Regards
Rafiq




To: <[EMAIL PROTECTED]>
CC: <[EMAIL PROTECTED]>
Date: Tue, 12 Feb 2002 15:28:41 -0600

Rafiq,

While your script provides a lot of good information, it sure is slow on my 
system. It took 1:44 minutes while my script below took 420 mseconds. I was 
really surprised as my script has a self-join. Then I checked out 
dba_free_space_coalesced. It sure is complicated as it calls on two other 
views and a table.

select a.tablespace_name, count(a.tablespace_name) "ContinguousFreeBlocks"
from dba_free_space a, dba_free_space b
where a.tablespace_name = b.tablespace_name
and a.file_id = b.file_id
and a.block_id = b.block_id + b.Blocks
group by a.tablespace_name;

If ContinguousFreeBlocks is > 10, I coalesce.

Jerry Whittle
ACIFICS DBA
NCI Information Systems Inc.
[EMAIL PROTECTED]
618-622-4145

 > -----Original Message-----
 > From:        Mohammad Rafiq [SMTP:[EMAIL PROTECTED]]
 >
 > Is your tablespace fragmented as it is not finding contingous extent ..
 > TRy to coalesce your subject tablespace and try...
 >
 > you can use following script to check whether coalesing is required or 
not..
 > If percent is < 100 then coalesce it..
 >
 > select substr(tablespace_name,1,10)TS_NAME,total_extents
 > "Total_Extnts",extents_coalesced,round(percent_extents_coalesced,0)
 > from dba_free_space_coalesced
 > order by tablespace_name
 > /
 >
 > HTH
 > Regards
 > Rafiq
 >




MOHAMMAD RAFIQ


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