p,
this query will tell you how many blocks are in cache
for each segment. multiply by your db_block_size and
divide that number by 1048576 to get megabytes.
remember that full table scan blocks get put on the
LRU end of the LRU list (pre-816) so they might not be
represented fairly by this query.
hth,
jack silvey
select
e.owner||'.'||e.segment_name segment_name,
sum(cnt) all_buffers,
sum(hot) hot_buffers,
sum(tch) touches
from
( select
min(file#||'.'||dbablk) fb,
count(*) cnt,
sum(decode(lru_flag, 8, 1, 0)) hot,
sum(tch) tch
from
sys.x_$bh
where
inst_id = userenv('Instance') and
state in (1, 3)
group by
obj,
class
) b,
sys.apt_extents e
where
e.file_id = substr(b.fb, 1, instr(b.fb, '.') - 1)
and
substr(b.fb, instr(b.fb, '.') + 1) between
e.block_id and e.block_id + e.blocks - 1
group by
e.owner||'.'||e.segment_name
order by
2
/
--- BigP <[EMAIL PROTECTED]> wrote:
> Hi Guys ,
> IS there any way I can find what is occupying how
> much of buffer cache . Like .. what table is taking
> most of space etc .
> Thanks ,
> Bp
>
__________________________________________________
Do You Yahoo!?
Yahoo! - Official partner of 2002 FIFA World Cup
http://fifaworldcup.yahoo.com
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Jack Silvey
INET: [EMAIL PROTECTED]
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
