-- 最耗緩存

SELECT * FROM (

SELECT SQL_FULLTEXT sql,

buffer_gets, executions, buffer_gets/executions "Gets/Exec",

hash_value,address,LAST_ACTIVE_TIME

FROM V$SQLAREA

WHERE buffer_gets > 10000

ORDER BY buffer_gets DESC)

WHERE rownum <= 10 ;

-- 最多物理讀取

SELECT * FROM (

SELECT SQL_FULLTEXT sql,

disk_reads, executions, disk_reads/executions "Reads/Exec",

hash_value,address,LAST_ACTIVE_TIME

FROM V$SQLAREA

WHERE disk_reads > 1000

ORDER BY disk_reads DESC)

WHERE rownum <= 10 ;

-- 最多執行

SELECT * FROM (

SELECT substr(sql_text,1,40) sql,SQL_FULLTEXT,

executions, rows_processed, rows_processed/executions "Rows/Exec",

hash_value,address,LAST_ACTIVE_TIME

FROM V$SQLAREA

WHERE executions > 100

ORDER BY executions DESC)

WHERE rownum <= 10 ;

-- 最耗內存

SELECT * FROM (

SELECT substr(sql_text,1,40) sql,

sharable_mem, executions, hash_value,address,LAST_ACTIVE_TIME

FROM V$SQLAREA

WHERE sharable_mem > 1048576

ORDER BY sharable_mem DESC)

WHERE rownum <= 10 ;

總結

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