What is the difference between DELTA & TOTAL columns in dba_hist_sqlstat Oracle?
I am using the following query to measure the performance improvement between two views
SELECT PARSING_SCHEMA_NAME,
SQL_TEXT,
OPTIMIZER_COST,
FETCHES_TOTAL,
FETCHES_DELTA,
EXECUTIONS_TOTAL,
EXECUTIONS_DELTA,
PARSE_CALLS_TOTAL,
PARSE_CALLS_DELTA,
DISK_READS_TOTAL,
DISK_READS_DELTA,
BUFFER_GETS_TOTAL,
BUFFER_GETS_DELTA,
ROWS_PROCESSED_TOTAL,
ROWS_PROCESSED_DELTA,
CPU_TIME_TOTAL,
CPU_TIME_DELTA,
ELAPSED_TIME_TOTAL,
ELAPSED_TIME_DELTA,
elapsed_time_delta / 1000 / 1000 AS elapsed_sec,
stat.snap_id,
TO_CHAR(SNAP.END_INTERVAL_TIME, 'dd.mm hh24:mi:ss') AS SNAPTIME,
txt.sql_id
FROM dba_hist_sqlstat stat,
dba_hist_sqltext txt,
dba_hist_snapshot snap
WHERE stat.sql_id = txt.sql_id
AND STAT.SNAP_ID = SNAP.SNAP_ID
AND SNAP.BEGIN_INTERVAL_TIME >= SYSDATE - 10
AND (
LOWER(SQL_TEXT) LIKE '%view1_name%'
OR LOWER(SQL_TEXT) LIKE '%view2_name%'
)
AND PARSING_SCHEMA_NAME NOT IN ('SYS', 'SYSMAN')
ORDER BY elapsed_time_delta ASC;
What is the difference between DELTA & TOTAL columns in the above query? Which set of columns are to be considered when measuring the performance change between the views?
database-administration oracle-11g
edited Sep 17 '18 at 23:27
Burgi
4,441102945
asked Mar 9 '17 at 9:43
MohanMohan
101
add a comment |
I am using the following query to measure the performance improvement between two views
SELECT PARSING_SCHEMA_NAME,
SQL_TEXT,
OPTIMIZER_COST,
FETCHES_TOTAL,
FETCHES_DELTA,
EXECUTIONS_TOTAL,
EXECUTIONS_DELTA,
PARSE_CALLS_TOTAL,
PARSE_CALLS_DELTA,
DISK_READS_TOTAL,
DISK_READS_DELTA,
BUFFER_GETS_TOTAL,
BUFFER_GETS_DELTA,
ROWS_PROCESSED_TOTAL,
ROWS_PROCESSED_DELTA,
CPU_TIME_TOTAL,
CPU_TIME_DELTA,
ELAPSED_TIME_TOTAL,
ELAPSED_TIME_DELTA,
elapsed_time_delta / 1000 / 1000 AS elapsed_sec,
stat.snap_id,
TO_CHAR(SNAP.END_INTERVAL_TIME, 'dd.mm hh24:mi:ss') AS SNAPTIME,
txt.sql_id
FROM dba_hist_sqlstat stat,
dba_hist_sqltext txt,
dba_hist_snapshot snap
WHERE stat.sql_id = txt.sql_id
AND STAT.SNAP_ID = SNAP.SNAP_ID
AND SNAP.BEGIN_INTERVAL_TIME >= SYSDATE - 10
AND (
LOWER(SQL_TEXT) LIKE '%view1_name%'
OR LOWER(SQL_TEXT) LIKE '%view2_name%'
)
AND PARSING_SCHEMA_NAME NOT IN ('SYS', 'SYSMAN')
ORDER BY elapsed_time_delta ASC;
What is the difference between DELTA & TOTAL columns in the above query? Which set of columns are to be considered when measuring the performance change between the views?
database-administration oracle-11g
edited Sep 17 '18 at 23:27
Burgi
4,441102945
asked Mar 9 '17 at 9:43
MohanMohan
101
add a comment |
I am using the following query to measure the performance improvement between two views
SELECT PARSING_SCHEMA_NAME,
SQL_TEXT,
OPTIMIZER_COST,
FETCHES_TOTAL,
FETCHES_DELTA,
EXECUTIONS_TOTAL,
EXECUTIONS_DELTA,
PARSE_CALLS_TOTAL,
PARSE_CALLS_DELTA,
DISK_READS_TOTAL,
DISK_READS_DELTA,
BUFFER_GETS_TOTAL,
BUFFER_GETS_DELTA,
ROWS_PROCESSED_TOTAL,
ROWS_PROCESSED_DELTA,
CPU_TIME_TOTAL,
CPU_TIME_DELTA,
ELAPSED_TIME_TOTAL,
ELAPSED_TIME_DELTA,
elapsed_time_delta / 1000 / 1000 AS elapsed_sec,
stat.snap_id,
TO_CHAR(SNAP.END_INTERVAL_TIME, 'dd.mm hh24:mi:ss') AS SNAPTIME,
txt.sql_id
FROM dba_hist_sqlstat stat,
dba_hist_sqltext txt,
dba_hist_snapshot snap
WHERE stat.sql_id = txt.sql_id
AND STAT.SNAP_ID = SNAP.SNAP_ID
AND SNAP.BEGIN_INTERVAL_TIME >= SYSDATE - 10
AND (
LOWER(SQL_TEXT) LIKE '%view1_name%'
OR LOWER(SQL_TEXT) LIKE '%view2_name%'
)
AND PARSING_SCHEMA_NAME NOT IN ('SYS', 'SYSMAN')
ORDER BY elapsed_time_delta ASC;
What is the difference between DELTA & TOTAL columns in the above query? Which set of columns are to be considered when measuring the performance change between the views?
database-administration oracle-11g
edited Sep 17 '18 at 23:27
Burgi
4,441102945
asked Mar 9 '17 at 9:43
MohanMohan
101
I am using the following query to measure the performance improvement between two views
SELECT PARSING_SCHEMA_NAME,
SQL_TEXT,
OPTIMIZER_COST,
FETCHES_TOTAL,
FETCHES_DELTA,
EXECUTIONS_TOTAL,
EXECUTIONS_DELTA,
PARSE_CALLS_TOTAL,
PARSE_CALLS_DELTA,
DISK_READS_TOTAL,
DISK_READS_DELTA,
BUFFER_GETS_TOTAL,
BUFFER_GETS_DELTA,
ROWS_PROCESSED_TOTAL,
ROWS_PROCESSED_DELTA,
CPU_TIME_TOTAL,
CPU_TIME_DELTA,
ELAPSED_TIME_TOTAL,
ELAPSED_TIME_DELTA,
elapsed_time_delta / 1000 / 1000 AS elapsed_sec,
stat.snap_id,
TO_CHAR(SNAP.END_INTERVAL_TIME, 'dd.mm hh24:mi:ss') AS SNAPTIME,
txt.sql_id
FROM dba_hist_sqlstat stat,
dba_hist_sqltext txt,
dba_hist_snapshot snap
WHERE stat.sql_id = txt.sql_id
AND STAT.SNAP_ID = SNAP.SNAP_ID
AND SNAP.BEGIN_INTERVAL_TIME >= SYSDATE - 10
AND (
LOWER(SQL_TEXT) LIKE '%view1_name%'
OR LOWER(SQL_TEXT) LIKE '%view2_name%'
)
AND PARSING_SCHEMA_NAME NOT IN ('SYS', 'SYSMAN')
ORDER BY elapsed_time_delta ASC;
What is the difference between DELTA & TOTAL columns in the above query? Which set of columns are to be considered when measuring the performance change between the views?
database-administration oracle-11g
database-administration oracle-11g
edited Sep 17 '18 at 23:27
Burgi
4,441102945
asked Mar 9 '17 at 9:43
MohanMohan
101
edited Sep 17 '18 at 23:27
Burgi
4,441102945
asked Mar 9 '17 at 9:43
MohanMohan
101
edited Sep 17 '18 at 23:27
Burgi
4,441102945
edited Sep 17 '18 at 23:27
Burgi
4,441102945
edited Sep 17 '18 at 23:27
Burgi
4,441102945
4,441102945
asked Mar 9 '17 at 9:43
MohanMohan
101
asked Mar 9 '17 at 9:43
MohanMohan
101
asked Mar 9 '17 at 9:43
MohanMohan
101
101
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
CPU Time Total means that your statement used CPU for that amount of seconds. It's the cumulative value of CPU time parsing/executing/fetching.
CPU Time Delta is measuring usage between polling cycles.
The logic of this is the following: it helps you separate those sessions which are currently using a lot of CPU time (sort them by CPU Delta) versus those which have, over their lifetime, used a lot of CPU time (sort them by CPU Total).
answered Mar 9 '17 at 10:08
OvermindOvermind
7,98831631
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
CPU Time Total means that your statement used CPU for that amount of seconds. It's the cumulative value of CPU time parsing/executing/fetching.
CPU Time Delta is measuring usage between polling cycles.
The logic of this is the following: it helps you separate those sessions which are currently using a lot of CPU time (sort them by CPU Delta) versus those which have, over their lifetime, used a lot of CPU time (sort them by CPU Total).
answered Mar 9 '17 at 10:08
OvermindOvermind
7,98831631
add a comment |
CPU Time Total means that your statement used CPU for that amount of seconds. It's the cumulative value of CPU time parsing/executing/fetching.
CPU Time Delta is measuring usage between polling cycles.
The logic of this is the following: it helps you separate those sessions which are currently using a lot of CPU time (sort them by CPU Delta) versus those which have, over their lifetime, used a lot of CPU time (sort them by CPU Total).
answered Mar 9 '17 at 10:08
OvermindOvermind
7,98831631
add a comment |
CPU Time Total means that your statement used CPU for that amount of seconds. It's the cumulative value of CPU time parsing/executing/fetching.
CPU Time Delta is measuring usage between polling cycles.
The logic of this is the following: it helps you separate those sessions which are currently using a lot of CPU time (sort them by CPU Delta) versus those which have, over their lifetime, used a lot of CPU time (sort them by CPU Total).
answered Mar 9 '17 at 10:08
OvermindOvermind
7,98831631
CPU Time Total means that your statement used CPU for that amount of seconds. It's the cumulative value of CPU time parsing/executing/fetching.
CPU Time Delta is measuring usage between polling cycles.
The logic of this is the following: it helps you separate those sessions which are currently using a lot of CPU time (sort them by CPU Delta) versus those which have, over their lifetime, used a lot of CPU time (sort them by CPU Total).
answered Mar 9 '17 at 10:08
OvermindOvermind
7,98831631
answered Mar 9 '17 at 10:08
OvermindOvermind
7,98831631
answered Mar 9 '17 at 10:08
OvermindOvermind
7,98831631
answered Mar 9 '17 at 10:08
OvermindOvermind
7,98831631
7,98831631
add a comment |
add a comment |
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