What is "KQR M PO" in shared pool

Question

Hi,
I am using oracle version 10.2.0.4. I fired below SQL.
select * from ( select pool,
name,
bytes/1024/1024 bytes
from v$sgastat
where pool='shared pool'
order by 3 desc
where rownum < 6;
POOL NAME BYTES/1024/1024
shared pool KQR M PO 404.138763
shared pool free memory 152.80159
shared pool KQR L PO 130.926659
shared pool sql area 114.5914
shared pool obj stat memo 84.535881
shared pool KQR ENQ 65.2046814
Any idea what is this "KQR M PO" in shared pool? Reason why i am asking this I am getting ora-4031 while executing below command.
drop user <user name> cascade;
So I was trying to monitor who is eating up this much space in shared pool.
Thanks in advance.
Best Regards,
oratest

Answer 1

If you still want to know why, poke about on Tanel Poder's blog and knowledgebase, he shows how to see all the subpool components and how to investigate these things.
X$KQR* tables describe rowcache, performance and parent/subordinate objects in the data dictionary.
select kqftanam from x$kqfta where kqftanam like 'X$KQR%'
SYS@TTST> /
KQFTANAM
X$KQRST
X$KQRPD
X$KQRSD
X$KQRFP
X$KQRFSSo wild speculation would be some bad mojo in recursive code for parent/child drop.