Shareware software
Работа с окном

Top type
-
Buffer
-
Physical Reads
-
Executions
-
Parse Calls
-
Sharable Memory
-
Version Count
Последовательность действий
-
Из выпадающего списка "Top type" выбрать тип группировки
-
В поле "Number of displayed rows" указать количество отображаемых строк
-
Нажать кнопку "Show data"

Просмотр информации по запросу
-
Выделить строку в списке "List query"
-
В поле "Query text" отобразится сам запрос
-
На вкладке "Plan" план запроса
-
При переключении на вкладку "Recomendation" формируются рекомендации по оптимизации запроса с помощью DBMS_SQLTUNE

SQL Запросы
-
Buffer
SELECT *
FROM
(SELECT sql_fulltext sql,
sql_id,
buffer_gets,
executions,
buffer_gets/(nvl2(executions,1,1)) "Gets/Exec",
hash_value,
address
FROM V$SQLAREA
WHERE buffer_gets > 10000
ORDER BY buffer_gets DESC
)
WHERE rownum <= 100
-
Physical read
SELECT *
FROM
(SELECT sql_fulltext sql,
sql_id,
disk_reads,
executions,
disk_reads/(nvl2(executions,1,1)) "Reads/Exec",
hash_value,
address
FROM V$SQLAREA
WHERE disk_reads > 1000
ORDER BY disk_reads DESC
)
WHERE rownum <= 100
-
Executions
SELECT *
FROM
(SELECT sql_fulltext sql,
sql_id,
executions,
rows_processed,
rows_processed/(nvl2(executions,1,1)) "Rows/Exec",
hash_value,
address
FROM V$SQLAREA
WHERE executions > 100
ORDER BY executions DESC
)
WHERE rownum <= 100
-
Parse calls
SELECT *
FROM
(SELECT sql_fulltext sql,
sql_id,
parse_calls,
executions,
hash_value,
address
FROM V$SQLAREA
WHERE parse_calls > 1000
ORDER BY parse_calls DESC
)
WHERE rownum <= 100
-
Sharable memory
SELECT *
FROM
(SELECT sql_fulltext sql,
sql_id,
sharable_mem,
executions,
hash_value,
address
FROM V$SQLAREA
WHERE sharable_mem > 1048576
ORDER BY sharable_mem DESC
)
WHERE rownum <= 100
-
Version count
SELECT *
FROM
(SELECT sql_fulltext sql,
sql_id,
version_count,
executions,
hash_value,
address
FROM V$SQLAREA
WHERE version_count > 20
ORDER BY version_count DESC
)
WHERE rownum <= 100
-
Load recomendation
DECLARE
my_task_name VARCHAR2 (30);
BEGIN
my_task_name := DBMS_SQLTUNE.CREATE_TUNING_TASK (
sql_id => $$SQL_ID,
task_name => $$TASK_NAME_GEN);
END;
/
begin
DBMS_SQLTUNE.EXECUTE_TUNING_TASK ($$TASK_NAME_GEN);
end;
/
SELECT DBMS_SQLTUNE.REPORT_TUNING_TASK ($$TASK_NAME_GEN) "SQL" FROM dual;