oracle中ora-04301故障处理-mysql教程

ksmchidx,
(case
when ksmchsiz >= 65560 then
254
when ksmchsiz >= 32792 then
253
when ksmchsiz >= 40 then
1
when ksmchsiz >= 32 then
0
end) bucket#,
count(*) free_chunks,
sum(ksmchsiz) free_space,
trunc(avg(ksmchsiz)) avg_chunk_size
from x$ksmsp
where ksmchcls = 'free'
group by ksmchidx,
(case
when ksmchsiz >= 65560 then
254
when ksmchsiz >= 32792 then
253
when ksmchsiz >= 40 then
1
when ksmchsiz >= 32 then
0
end);

select name,value from v$sysstat where name like '%parse%';

SELECT substr(sql_text, 1, 40) "SQL", count(*), sum(executions) "TotExecs",max(sql_id) sql_id
FROM v$sqlarea
WHERE executions <5
GROUP BY substr(sql_text, 1, 40)
HAVING count(*) > 30
ORDER BY 2;

select * FROM v$sqlarea where sql_id='g2b789ppwxjx8';

ELECT KSMCHCLS CLASS, COUNT(KSMCHCLS) NUM, SUM(KSMCHSIZ) SIZ,
To_char( ((SUM(KSMCHSIZ)/COUNT(KSMCHCLS)/1024)),'999,999.00')||'k' "AVG SIZE"
FROM X$KSMSP GROUP BY KSMCHCLS;