查询执行慢的SQL

--执行慢的SQL：

SELECT S.SQL_TEXT,

S.SQL_FULLTEXT,

S.SQL_ID,

ROUND(ELAPSED_TIME / 1000000 / (CASE

WHEN (EXECUTIONS = 0 OR NVL(EXECUTIONS, 1 ) = 1) THEN

1

ELSE

EXECUTIONS

END),

2) "执行时间'S'",

S.EXECUTIONS "执行次数",

S.OPTIMIZER_COST "COST",

S.SORTS,

S.MODULE, --连接模式（JDBC THIN CLIENT：程序）

-- S.LOCKED_TOTAL,

S.PHYSICAL_READ_BYTES "物理读",

-- S.PHYSICAL_READ_REQUESTS "物理读请求",

S.PHYSICAL_WRITE_REQUESTS "物理写",

-- S.PHYSICAL_WRITE_BYTES "物理写请求",

S.ROWS_PROCESSED      "返回行数",

S.DISK_READS          "磁盘读",

S.DIRECT_WRITES       "直接路径写",

S.PARSING_SCHEMA_NAME,

S.LAST_ACTIVE_TIME

FROM GV$SQLAREA S

WHERE ROUND(ELAPSED_TIME / 1000000 / (CASE

WHEN (EXECUTIONS = 0 OR NVL(EXECUTIONS, 1 ) = 1) THEN

1

ELSE

EXECUTIONS

END),

2) > 5 --100 0000微秒=1S

AND S.PARSING_SCHEMA_NAME = USER

AND TO_CHAR(S.LAST_LOAD_TIME, 'YYYY-MM-DD') =

TO_CHAR( SYSDATE, 'YYYY-MM-DD' )

AND S.COMMAND_TYPE IN (2 , 3, 5, 6 , 189)

ORDER BY "执行时间'S'" DESC;

/*  SQL中 COMMAND_TYPE意义:

2：INSERT

3：SELECT

6：UPDATE

7：DELETE

189：MERGE

详情可通过查找V$SQLCOMMAND视图  */

V$SQLAREA    官网解释：http://docs.oracle.com/cd/E11882_01/server.112/e40402/dynviews_3064.htm#REFRN30259

V$SQLCOMMAND 官网解释：http://docs.oracle.com/cd/E11882_01/server.112/e40402/dynviews_3066.htm#REFRN30632