EXAMPLE V$SQLAREA QUERIES
-------------------------
Top 10 by Buffer Gets:
set linesize 100
set pagesize 100
SELECT * FROM
(SELECT substr(sql_text,1,40) sql,
buffer_gets, executions, buffer_gets/executions "Gets/Exec",
hash_value,address
FROM V$SQLAREA
WHERE buffer_gets > 10000
ORDER BY buffer_gets DESC)
WHERE rownum <= 10
;
Top 10 by Physical Reads:
set linesize 100
set pagesize 100
SELECT * FROM
(SELECT substr(sql_text,1,40) sql,
disk_reads, executions, disk_reads/executions "Reads/Exec",
hash_value,address
FROM V$SQLAREA
WHERE disk_reads > 1000
ORDER BY disk_reads DESC)
WHERE rownum <= 10
;
Top 10 by Executions:
set linesize 100
set pagesize 100
SELECT * FROM
(SELECT substr(sql_text,1,40) sql,
executions, rows_processed, rows_processed/executions "Rows/Exec",
hash_value,address
FROM V$SQLAREA
WHERE executions > 100
ORDER BY executions DESC)
WHERE rownum <= 10
;
Top 10 by Parse Calls:
set linesize 100
set pagesize 100
SELECT * FROM
(SELECT substr(sql_text,1,40) sql,
parse_calls, executions, hash_value,address
FROM V$SQLAREA
WHERE parse_calls > 1000
ORDER BY parse_calls DESC)
WHERE rownum <= 10
;
Top 10 by Sharable Memory:
set linesize 100
set pagesize 100
SELECT * FROM
(SELECT substr(sql_text,1,40) sql,
sharable_mem, executions, hash_value,address
FROM V$SQLAREA
WHERE sharable_mem > 1048576
ORDER BY sharable_mem DESC)
WHERE rownum <= 10
;
Top 10 by Version Count:
set linesize 100
set pagesize 100
SELECT * FROM
(SELECT substr(sql_text,1,40) sql,
version_count, executions, hash_value,address
FROM V$SQLAREA
WHERE version_count > 20
ORDER BY version_count DESC)
WHERE rownum <= 10
;
-------------------------------------------------------------------------------------------
Related links :
LATCHES LOCKS PINS AND MUTEXES
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LATCHES LOCKS PINS AND MUTEXES
MUTEXES AND LATCHES
PARENT AND CHILD CURSORS IN ORACLE
QUICK OVERVIEW OF SHARED POOL TUNING
SHARED POOL ARCHITECTURE
SQL PLAN MANAGEMENT – ORACLE 11g : Part-1
http://koenigocm.blogspot.in/search/label/SQL%20PLAN%20MANAGEMENT%E2%80%93%20ORACLE%20%2011g%20%3A%20Part-1
SQL PLAN MANAGEMENT – ORACLE 11g : Part-2
http://koenigocm.blogspot.in/search/label/SQL%20PLAN%20MANAGEMENT%20%E2%80%93%20ORACLE%2011g%20%3A%20Part-2
CURSOR_SHARING DEMYSTIFIED
CURSOR_SHARING DEMYSTIFIED
LIBRARY CACHE LOCK/PIN DEMONSTRATED
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