Oracle查看邏輯讀、物理讀資源占用排行的SQL語句，oraclesql

Oracle查看邏輯讀、物理讀資源占用排行的SQL語句，oraclesql

查看邏輯讀前10的SQL：

復制代碼 代碼如下:
set linesize 300;
set pagesize 300;
set long 50000;
SELECT *
FROM (
    SELECT sql_fulltext AS sql, SQL_ID,buffer_gets / executions AS "Gets/Exec",buffer_gets, executions
    FROM V$SQLAREA
    WHERE buffer_gets > 10000
    ORDER BY "Gets/Exec" DESC
)
WHERE rownum <= 10;

查看物理讀前10的SQL：

復制代碼 代碼如下:
set linesize 300;
set pagesize 300;
set long 50000;
SELECT *
FROM (
    SELECT sql_fulltext AS sql, SQL_ID,disk_reads / executions AS "Reads/Exec",disk_reads, executions
    FROM V$SQLAREA
    WHERE disk_reads > 1000
    ORDER BY "Reads/Exec" DESC
)
WHERE rownum <= 10;

oracle需要經常統計每個會話的邏輯讀與物理讀信息，直接使用SQL很不方便，設計一個程序，簡化查看某個會話

select t.SID,n.NAME,t.VALUE
from v$sesstat t, v$statname n
where t.STATISTIC# = n.STATISTIC#
and n.STATISTIC# in (9, 54)
and t.SID=&sid
 

oracle中怎查找占用資源較多的sql語句

查找前十條性能差的sql.
SELECT * FROM
(
SELECT PARSING_USER_ID
EXECUTIONS,
SORTS,
COMMAND_TYPE,
DISK_READS,
sql_text
FROM v$sqlarea
ORDER BY disk_reads DESC
)
WHERE ROWNUM<10 ;